A passive R-L load is supplied from a step-down DC-DC converter (chopper) from a LiPo battery of 12 V. The chopper operates with switching frequency of 4 kHz. The load resistance and inductance are 10 and 50 mH, respectively, so that the converter operates in the continuous conduction mode. The switching components can be considered as ideal.

A. Determine the required duty cycle and chopper on-time if the chopper output average voltage is 8 V.

B. Calculate the average load current and the power delivered to the load for the case considered in part A).

C. After certain time the battery has discharged, and the battery voltage dropped to 10.2 V. Calculate the new values of duty cycle and chopper on-time needed to maintain the same voltage on the output.

D. How much power is now taken from the battery?

Answers

Answer 1

A. The formula for duty cycle, D is given by:D = Vout / Vin

Where Vout is the output voltage of the chopper, and Vin is the input voltage of the chopper.

Substituting the given values in the formula,

D = 8/12

= 0.67

= 67%.

On-time, ton can be calculated using the formula:

ton = (D / fs) * 10^6

Substituting the given values in the formula,

ton = (0.67 / 4000) * 10^6= 167 µs.B.

The average load current formula is given by:

I_L = Vout / R_L

Substituting the given values in the formula

,I_L = 8 / 10

= 0.8 A.

The formula for the power delivered to the load is given by:

P_L = I_L^2 x R_L

Substituting the given values in the formula,

P_L = (0.8)^2 x 10

= 6.4 W.C.

The battery voltage has decreased to 10.2 V.

Using the duty cycle formula and substituting the given values,

D = Vout / Vin

= 8 / 10.2

= 0.784

= 78.4%

On-time formula is:

ton = (D / fs) * 10^6

ton = (0.784 / 4000) * 10^6

= 196 µs.

D. The voltage across the load has not changed; hence the load current remains the same.

The new power output from the chopper,

P_L = 6.4 W

The battery voltage decreased from 12 V to 10.2 V, so the power delivered by the battery is

P_bat = P_L / ηbat

where ηbat is the battery efficiency.

P_bat = 6.4 / 0.8 = 8 W.

Answer: Duty cycle = 78.4%, Ton = 196 µs, Average load current = 0.8 A, Power delivered to the load = 6.4 W, Power taken from the battery = 8 W.

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Related Questions

Apply Horspool's algorithm to search for the pattern BAOBAB in BESS KNEW ABOUT_BAOBABS Assume that the text comprises English letters and Construct the shift table and show the detailed steps. How many comparisons and shifts does it need to do before finding the pattern?

Answers

To apply Horspool's algorithm to search for the pattern "BAOBAB" in the text "BESS KNEW ABOUT_BAOBABS", we need to construct the shift table and then perform the search. Here are the detailed steps:

1. Constructing the Shift Table:

  - The shift table is based on the pattern "BAOBAB" and contains the shift values for each character in the pattern.

  - Initialize the shift table with a default shift value equal to the length of the pattern.

  - For each character in the pattern, except the last one, set the shift value to the distance from the last occurrence of that character in the pattern to the end of the pattern.

  - If a character does not appear in the pattern, set its shift value to the length of the pattern.

  - In this case, the pattern is "BAOBAB", and the shift table will be:

    - Shift table: {'B': 4, 'A': 3, 'O': 1}

2. Performing the Search:

  - Start at the beginning of the text.

  - While the current position is less than or equal to the length of the text minus the length of the pattern:

    - Compare the characters in the pattern with the corresponding characters in the text from right to left.

    - If a mismatch is found:

      - If the mismatched character is not in the pattern, shift the pattern by the length of the pattern.

      - Otherwise, shift the pattern by the value specified in the shift table for the mismatched character.

    - If a match is found:

      - Report the position of the match.

      - Shift the pattern by the length of the pattern to continue searching for additional matches.

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Let x[n] be a periodic signal with one period given by [1, -2, 3, 4, 5, -6] for 2 ≤ n ≤ 3. Given that x[n]is provided as input to an LTI system with impulse response h[n] = 0.8m), determine one period of the output sequence y[n]. Provide a number as the sum value of y[n] for n = 0,..., 5, i.e. Ση δυ[n]. Specify your answer with TWO decimal digits of accuracy.

Answers

The given periodic signal with one period given by [1, −2, 3, 4, 5, −6] for 2 ≤ n ≤ 3 is shown below: Periodic Signal Plotting the periodic signal, the given periodic signal repeats itself every six samples.

Hence the fundamental period is N = 6.Let the system be denoted by y[n] = x[n] * h[n]. Since the impulse response h[n] is given by h[n] = 0.8m , and y[n] is the output sequence.

Given that the initial conditions for the system aery[-1] = 0, y[-2] = 0, y[-3] = 0, y[-4] = 0, y[-5] = 0, y[-6] = 0Therefore, us one period of the output sequence is y[n] = [1, −0.4, 2.32, 5.256, 9.2008, 12.74464]

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Design a receiver for detecting the data on a unipolar NRZ signal, s(t) that has a peak value of A = 5 volts. In your design, assume that an RC low pass filter will be used and the data rate is 9,600 bits/s. (i) (ii) (iii) Draw a block diagram of your design and explain how it works. Give the values for the design parameters R, C and VT. Calculate the probability of bit error, P, if the ony noise introduced in the system is additive white noise at room temperature.

Answers

Probability of bit error, P can be calculated as: P = Q (Vt / 2 σ). The signal s(t) has a peak value of A = 5 volts. Let us create a receiver for detecting the data on the unipolar NRZ signal s(t). The signal s(t) has a maximum frequency component equal to the bit rate of 9,600 bits/s, which is very small.

This implies that we can utilize a low-pass filter to suppress the high-frequency noise. We may use an RC filter to suppress the high-frequency noise since we require a low-pass filter. The block diagram for the detection of data on the unipolar NRZ signal s(t) is shown above. It is a receiver block diagram that utilizes a low-pass filter. A capacitor C is utilized as an RC low pass filter. The resistance R is utilized in series with the capacitor.

(iii) The formula for the cutoff frequency is as follows: fc = 1 / (2πRC) For the given data rate of 9,600 bits/s and the peak value of A = 5 volts, the value of RC can be determined. Using the formula for the peak voltage, we get: Peak voltage, VP = A / 2

= 2.5 volts To obtain the value of VT, we need to divide VP by 2;

= 1.25 volts The formula for the cutoff frequency is as follows: fc = 1 / (2πRC)Substitute the value of fc and R From the above equation, the value of C can be obtained as follows: C = 1 / (2πfcR)

= 3.32 nF Probability of bit error, P can be calculated as:

P = Q (Vt / 2 σ)

= Q (1.25 / (2 × σ)) The Bit error rate (BER) is given by: BER = P / (ln2) Therefore, the bit error probability, P, and bit error rate (BER) can be calculated.

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There are six current-carrying conductors in a raceway that is to be installed in an area with an ambient temperature of 100°F. It is necessary to
a. apply a correction for the ambient temperature only
b. de-rate because of the number of conductors in the raceway only o
c. correct for temperature and de-rate because of the number of conductors
d. no corrections or de-rate's are required

Answers

The answer to this question is correct for temperature and de-rate because of the number of conductors.The correct answer is option C.

Whenever conductors in a raceway are to be installed in an area where there is an ambient temperature of 100°F, it is necessary to correct for temperature and de-rate because of the number of conductors.

Ambient temperature correction:Conductors are generally rated to operate at a certain maximum temperature. Therefore, when the temperature of the surrounding area increases, it heats the conductor and, in turn, increases its resistance.

As a result, the conductor's maximum allowable current is reduced. To compensate for this, we use a correction factor.Number of conductors correction:Whenever multiple current-carrying conductors are in a raceway, they generate heat due to current flow.

As the number of current-carrying conductors in a raceway increases, the heat generated by the conductors rises, increasing the temperature in the surrounding area.

As a result, the conductor's maximum allowable current is reduced. This reduction is referred to as the derating factor.

Therefore,The correct answer is option C.

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s(t) = sin(24t) +0.5 cos( πt/2)

Assume a 20 Hz sampling rate with 8-bit uniform quantization and 20 second observation window. Describe the differences between spectra of the quantized and unquantized signals.

Answers

The differences are: The quantized signal has a noisy spectrum in comparison to the unquantized signal. The quantized signal contains additional frequency components due to quantization noise. The quantized signal spectrum is not identical to the unquantized spectrum.

The signal given as s(t) = sin(24t) +0.5 cos( πt/2) has to be processed to be able to differentiate between the unquantized and quantized spectra.

However, there are few steps to process the given signal in order to obtain the spectra of the unquantized and quantized signal which are given below:

Sine function is defined as:

s(t) = sin(24t)

The period of s(t) is defined as:

T1 = 2π / 24 = π / 12

The cosine function is defined as:

s(t) = 0.5 cos( πt/2)

The period of s(t) is defined as:

T2 = 2π / π / 2 = 4

The common period of both the sine and cosine functions is defined as

T = LCM(T1, T2) = LCM( π / 12, 4) = 2π

The time duration of the observation window is defined as Td = 20 sec.

The sampling frequency is defined as fs = 20 Hz

The number of samples is defined as N = fs Td = 20 * 20 = 400

Let us perform the Fourier transform to the unquantized and quantized signal separately, and observe the differences in their spectra.

Unquantized spectra:

Fourier transform of s(t) is given as:

S(f) = 0.5 * (j / 2) * [δ (f-12) - δ (f + 12)] + 0.25 * [δ (f + 2) + δ (f - 2)]

The frequency range for the unquantized signal is defined as:

f = -fs / 2 : Δf : fs / 2 - Δfwhere,Δf = fs / N = 20 / 400 = 0.05

The frequency axis for the unquantized spectrum can be defined as follows:

faxis = linspace(-fs / 2, fs / 2 - Δf, N);

Quantized spectra

Analog signal is first sampled at a rate of fs and then quantized to the nearest level represented by an 8-bit digital word (n = 256 levels).

The quantization levels can be represented in the range [-1, 1].

The quantization step size is defined as:Δ = (2 * Qmax) / (n - 1) = 2 / (256 - 1) = 0.0078

The quantization level can be defined as:Qk = -1 + (k - 1/2) Δ; k = 1, 2, ..., n

The sampled signal is then quantized to the nearest quantization level Qk.

Let q(t) be the quantized version of s(t).

Therefore, q(t) = Qk if Qk - Δ / 2 < s(t) ≤ Qk + Δ / 2; k = 1, 2, ..., n

The quantization noise can be defined as:

e(t) = q(t) - s(t)

The quantized signal is then passed through a low-pass filter with a cut-off frequency of 10 Hz.

The filtered signal is then Fourier transformed.

Fourier transform of the quantized signal can be defined as: S(f) = 0.5 * (j / 2) * [δ (f-12) - δ (f + 12)] + 0.25 * [δ (f + 2) + δ (f - 2)] + Q(f)

The frequency range for the quantized signal is defined as:

f = -fs / 2 : Δf : fs / 2 - Δf

The frequency axis for the quantized spectrum can be defined as follows:

faxis = linspace(-fs / 2, fs / 2 - Δf, N)

Based on the above analysis, the following differences between spectra of the quantized and unquantized signals can be concluded:

The quantized signal has a noisy spectrum in comparison to the unquantized signal. The quantized signal contains additional frequency components due to quantization noise. The quantized signal spectrum is not identical to the unquantized spectrum.

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Please make a short report regarding DC generator application that you know. The report should be only in 1 page. It can consist of 1 figure only (25% size of total area of an A4 paper

Answers

A DC (direct current) generator is an electrical device that converts mechanical energy into electrical energy. DC generators have various applications in the electrical industry. The following are some of the applications of a DC generator.

Battery Charging: DC generators are used to charge batteries in vehicles, emergency power backup systems, and for portable power tools. Telecommunication: DC generators are used to power telecommunication towers, which require a reliable source of power for uninterrupted communication. They can be used in remote areas where there is no access to electricity from the grid.

They are used to convert the mechanical energy from the wind or the sun into electrical energy that can be stored in a battery or fed into the grid. In conclusion, DC generators are used in a variety of applications in the electrical industry, from battery charging to renewable energy.  The use of DC generators will continue to grow as the demand for reliable and sustainable power sources increases.

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Explain in detail about the serial communication of UART with PIC microcontroller?

Answers

UART (Universal Asynchronous Receiver/Transmitter) is a protocol that communicates using serial communication and is widely used in embedded systems. In a UART communication, data is transmitted in the form of bits between two devices.

PIC microcontrollers are equipped with a built-in UART module that makes serial communication easy.

The PIC microcontroller has two pins specifically designated for UART communication: the TX pin and the RX pin. The TX pin is used to transmit data, while the RX pin is used to receive data. To initiate a UART transmission, the PIC microcontroller must first configure the UART module with the appropriate settings.

To transmit data using UART, the PIC microcontroller must first load the data into a buffer. Once the data is loaded, the UART module automatically sends the data bit-by-bit on the TX pin. The receiver device receives the data on the RX pin and stores it in a buffer. Once the data has been received, the receiver device sends an acknowledgment signal to the transmitter device.

Overall, UART is an efficient and reliable protocol for serial communication, and it is widely used in embedded systems due to its simplicity and ease of use.

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Indicate whether the following statement is True or False and correct the false statements. X 1- In a combined gas turbines-steam power plant, the heat source of the gas turbine system is only from bu

Answers

In a combined gas turbines-steam power plant, the heat source of the gas turbine system is only from bu" is False.

A combined gas turbines-steam power plant uses gas turbine exhaust to generate steam that powers a steam turbine, which produces additional electricity. The explanation is given below: A combined cycle gas turbine power plant (CCGT) is a kind of power plant that uses both gas and steam turbines to produce electricity.

The process is accomplished by using the exhaust heat of the gas turbine to generate steam in a heat recovery steam generator (HRSG), which then powers a steam turbine. The gas turbine system's heat source comes from both the fuel used in the gas turbine and the waste heat that is produced as a byproduct of the gas turbine's operation. As a result, the heat source is not only from burning fuel.

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A flow measuring transmitter has a linear input-output graph. The input range is 0 to 10 liters per minute (L/min); the output range is 4 to 20 mA. Find the following: Input when the output is 11 mA Output when input is 4 L/min .

Answers

Input when the output is 11 mA is 4.375 L/min.

Output when input is 4 L/min is 6.4 mA.

Given data: Input range = 0 to 10 L/min Output range = 4 to 20 mA.

Now we have to find the following:

Input when the output is 11 mA

Output when input is 4 L/min.

Input when the output is 11 mA:

We know that the input-output graph is linear.

Therefore, we can use the formula of the straight line to find the input corresponding to the output 11 mA.

The formula of the straight line is: y = mx + c where, y = Output in mA m = slope = (y2 - y1) / (x2 - x1)c = intercept x = Input in L/min

We can find the values of slope and intercept as follows:

Slope, m = (y2 - y1) / (x2 - x1)= (20 - 4) / (10 - 0)= 16/10= 1.6 Intercept, c = 4

By substituting the values of m and c in the formula of the straight line, we get y = mx + c11 = 1.6x + 4=> 1.6x = 11 - 4=> 1.6x = 7=> x = 7 / 1.6=> x = 4.375

The input when the output is 11 mA is 4.375 L/min.

Output when input is 4 L/min:

Again we can use the formula of the straight line to find the output corresponding to the input 4 L/min.

The formula of the straight line is: y = mx + c where, y = Output in mA m = slope = (y2 - y1) / (x2 - x1)c = intercept x = Input in L/min

We can use the same values of slope and intercept as before. Slope, m = 1.6 Intercept, c = 4

By substituting the values of m and c in the formula of the straight line, we get y = mx + c= 1.6 × 4 + 4= 6.4

The output when input is 4 L/min is 6.4 mA.

Answer:

Input when the output is 11 mA is 4.375 L/min.

Output when input is 4 L/min is 6.4 mA.

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​​​​​​Give a brief explanation of the difference between a NAAQS
exceedance and a NAAQS violation.

Answers

A NAAQS exceedance refers to temporary levels exceeding the established standard, while a NAAQS violation indicates a persistent or recurring non-compliance with the standard.

NAAQS (National Ambient Air Quality Standard), set by regulatory agencies to protect public health and the environment, establish maximum allowable levels for pollutants in the ambient air. The terms "exceedance" and "violation" are used to describe different scenarios of non-compliance:

1. NAAQS Exceedance: A NAAQS exceedance refers to a temporary event where pollutant concentrations surpass the standard. It may occur due to short-term spikes in pollution levels caused by localized sources, unusual weather conditions, or specific events. Exceedances are typically evaluated and addressed on a case-by-case basis and may not immediately trigger regulatory actions.

2. NAAQS Violation: A NAAQS violation signifies a sustained or recurring non-compliance with the established standard. It occurs when pollutant levels consistently exceed the NAAQS over a specified timeframe, such as an averaging period (e.g., 24 hours or annual). Violations trigger regulatory consequences and the implementation of corrective measures, such as emission controls, enforcement actions, or mandated pollution reduction plans.

Differentiating between exceedances and violations is crucial in regulatory decision-making and prioritizing resources for air quality management. While exceedances may warrant investigation and localized actions, violations indicate the need for more significant and sustained efforts to achieve and maintain compliance with the NAAQS.

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Flow occurs over a spillway of constant section where depth of flow in the upstream is (1000 + 53) mm, and depth of flow in the downstream is (50+53) mm, where x is the last two digits of your student ID. Calculate the resultant horizontal force (in Newton) on the spillway if the width of the spillway is 102 meter. Assume there is no head loss. Scan your A4 pages of solution and upload the scanned pages in vUWS as a single pdf file. Do not email it to the Lecturer/Tutor.

Answers

the horizontal force acting on the spillway is 1.70 × 10⁶ N.

Depth of flow in the upstream= (1000 + 53) mm

= 1.053 m

Depth of flow in the downstream= (50+53) mm

= 0.103 m

Width of the spillway = 102 m

There is no head loss.Find the area of the section in the upstream side,

A1 = width × depth

A1 = 102 × 1.053

= 107.406 m²

,Velocity in upstream, V1 = (2/3) × √g × H1

Where, g = acceleration due to gravity

= 9.81 m/s²

V1 = (2/3) × √9.81 × 1.053V1

= 1.837 m/s

Find the area of the section in the downstream side

,A2 = width × depth

A2 = 102 × 0.103A2

= 10.506 m²

Velocity in downstream, V2 = (2/3) × √g × H2

Where, g = acceleration due to gravity

= 9.81 m/s²

V2 = (2/3) × √9.81 × 0.103V2

= 0.641 m/s

F1 = (γ/2) × A1 × V1²

Where, γ = specific weight of water

= 9.81 kN/m³

F1 = (9.81/2) × 107.406 × (1.837)²

F1 = 1717.38 kN

F2 = (γ/2) × A2 × V2²F2

= (9.81/2) × 10.506 × (0.641)²

F2 = 21.60 kN

Total horizontal force acting on the spillway,Resultant force = F1 - F2

Resultant force = 1717.38 - 21.60

Resultant force = 1695.78 kN

= 1695780 N ≈

1.70 × 10⁶ N≈

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For the follow second order system with a unit step input, find the damping ratio, natural frequency, setting time (2% criterion), peak time, rise time and maximum % overshoot.

T(S) = 2S/ S²+3s+25

Answers

Damping ratio = 5, natural frequency = 0.3. The peak time is 1.39 seconds. The rise time is 0.85 seconds. The maximum percent overshoot is 28.28%. The setting time for 2% criterion is 2.67 seconds.

Given the transfer function, T(s) = 2s/(s²+3s+25).

The standard form of the second-order system is represented as follows: G(s) = (ωn²)/(s² + 2ξωn s + ωn²)

Given the transfer function, s² + 3s + 25 = 0, then ωn = √25 = 5.

The coefficient of s, which is 3 in the given transfer function is equal to 2ξωn.

We have to find ξ.ξ = 3/(2ωn)ξ = 3/(2 × 5)ξ = 0.3

Peak time: The peak time is given as follows: Tp = π/ωdTp = π/(ωn√(1-ξ²))Tp = π/(5 √(1-0.3²))Tp = 1.39 seconds

Rise time: The rise time is given as follows:Tr = (1.76/ωd)Tr = (1.76/ωn√(1-ξ²))Tr = (1.76/5√(1-0.3²))Tr = 0.85 seconds

Maximum percent overshoot(MP): The maximum percent overshoot is given as follows: MP = 100*e^(-ξπ/√(1-ξ²))MP = 100*e^(-0.3π/√(1-0.3²)) MP = 28.28%

Setting time: The setting time for 2% criterion is given as follows: Ts = 4/(ξωn)Ts = 4/(0.3 × 5)Ts = 2.67 seconds.

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Voltage on the secondary winding of a transformer can be increase or reduce with a corresponding decrease or increase in current. i) Express an equation of voltage transformation ratio related to the step up or step- down transformer. ii) Describe the characteristics of voltage transformation ratio depend on the value.

Answers

The voltage transformation ratio is the ratio of the number of turns on the primary and secondary coils of a transformer.

Voltage transformation ratio is the ratio of the number of turns of the secondary coil and the primary coil of a transformer. It is related to the step-up or step-down transformer through the equation: V p/Vs = Np/Ns Where V p is the primary voltage, Vs is the secondary voltage, Np is the number of turns on the primary coil, and Ns is the number of turns on the secondary coil.

If the voltage transformation ratio is greater than one, it means that the transformer is a step-up transformer, and the primary voltage is less than the secondary voltage. If the voltage transformation ratio is less than one, it means that the transformer is a step-down transformer, and the primary voltage is greater than the secondary voltage.

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QUESTION 5 The Javascript equivalent for the keyword combination of Display and Input is prompt(). O True O False

Answers

False The JavaScript equivalent for the combination of Display and Input is not prompt(). prompt() is a function in JavaScript that is used to display a dialog box to the user with a message and an input field.

The user can enter a value in the input field and click OK or press Enter to submit it. The prompt() function returns the value entered by the user as a string. However, the combination of Display and Input in JavaScript can be achieved using different methods depending on the context and requirements. Some common methods include using HTML elements like <input> or <textarea> to create input fields and using JavaScript to manipulate and retrieve the values entered by the user. For displaying content, JavaScript provides various methods like alert(), console.log(), and modifying the DOM (Document Object Model) to update the HTML content. In summary, while prompt() can be used for input, it is not the equivalent of the combination of Display and Input in JavaScript. It is just one method among many that can be used to interact with the user and retrieve input values.

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(b) The general form of the differential energy equation for fluid is: rhodtdu^​+p(∇⋅∇)=∇⋅(k∇T)+Φ where Φ is the viscous-dissipation function, du^≅cv​dT is the change in the internal energy, and the other symbols have their usual meaning. Show that for an incompressible fluid at rest, the general equation becomes: rhocp​∂t∂T​=k∇2T [6]

Answers

The general form of the differential energy equation for fluid is given as, $$\rho \frac{d u}{dt}+p(\nabla \cdot \vec{v})=\nabla \cdot(k \nabla T)+\Phi$$where $\Phi$ is the viscous-dissipation function, $\frac{du}{dt} \approx c_{v} \frac{dT}{dt}$ is the change in the internal energy, and the other symbols have their usual meaning.

Now, consider the given equation for an incompressible fluid at rest, we have, [tex]$$\begin{aligned} \rho \frac{d u}{d t}+p(\nabla \cdot \vec{v}) &=\nabla \cdot(k \nabla T)+\Phi \\ \rho c_{v} \frac{\partial T}{\partial t}+p(\nabla \cdot \vec{v}) &=k \nabla^{2} T+\Phi \\ \rho c_{v} \frac{\partial T}{\partial t} &=k \nabla^{2} T \\ \rho c_{v} \frac{\partial T}{\partial t} &=k \frac{\partial^{2} T}{\partial x^{2}}+k \frac{\partial^{2} T}{\partial y^{2}}+k \frac{\partial^{2} T}{\partial z^{2}}[/tex]\end{aligned}$$For an incompressible fluid at rest, $\nabla \cdot \vec{v}=0$.

Also, for incompressible fluids, we have $\rho=$ constant. Thus, we can write $\rho c_{p}=constant$ or $\rho c_{v}=constant$.

Hence[tex],$$\begin{aligned} \rho c_{v} \frac{\partial T}{\partial t} &=k \nabla^{2} T \\ \rho c_{p} \frac{\partial T}{\partial t} &=k \nabla^{2} T \end{aligned}$$[/tex]Thus, for an incompressible fluid at rest, the general equation becomes [tex]$\rho c_{p} \frac{\partial T}{\partial t}=k \nabla^{2} T$[/tex] and is proved. Hence, the solution is $\boxed{\rho c_{p} \frac{\partial T}{\partial t}=k \nabla^{2} T}.$

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SIMULATE ON PROTEUS

Simulate Buck, Boost and BuckBoost converters on Proteus

Power 10W, switching frequency 20KHz. Duty cycle D=0.5, Input voltage 12V. (L=1mH, C=100uF). C Perform the simulation of the same Buck, Boost and Buck Boost converters in Proteus and compare the output voltage (including the curly one)

Show the following values ​​in the simulation
Voltage ratio, current in inductance, current ripple voltage ripple, output voltage,

Answers

To simulate the Buck, Boost, and Buck-Boost converters on Proteus, follow these steps:

Set up the simulation parameters:

  - Power: 10W

  - Switching frequency: 20kHz

  - Duty cycle: D = 0.5

  - Input voltage: 12V

  - Inductor (L): 1mH

  - Capacitor (C): 100uF

Perform the simulation for each converter:

  - Buck Converter: Simulate the circuit with the specified parameters and observe the output voltage, voltage ratio, current in the inductance, current ripple, and voltage ripple.

  - Boost Converter: Set up the circuit with the given parameters and analyze the output voltage, voltage ratio, current in the inductance, current ripple, and voltage ripple.

  - Buck-Boost Converter: Configure the circuit according to the provided specifications and examine the output voltage, voltage ratio, current in the inductance, current ripple, and voltage ripple.

Compare the output voltage for each converter:

  - Analyze the simulated results of the Buck, Boost, and Buck-Boost converters to determine the output voltage of each. Compare the obtained values, including any voltage ripple present, and assess their performance in achieving the desired power conversion.

To simulate the Buck, Boost, and Buck-Boost converters on Proteus, you need to set up the simulation parameters, including power, switching frequency, duty cycle, input voltage, and component values such as inductance (L) and capacitance (C). Once the simulation is set up, you can observe and analyze various parameters of interest.

For each converter, the key values to examine include the voltage ratio, current in the inductance, current ripple, voltage ripple, and output voltage. These parameters provide insights into the performance and efficiency of the converters.

Comparing the output voltages of the Buck, Boost, and Buck-Boost converters allows you to evaluate their respective abilities to step down, step up, or invert the input voltage. Additionally, considering the voltage ripple is crucial, as it indicates the quality and stability of the output voltage.

By performing the simulation and comparing the results, you can gain a deeper understanding of how each converter operates and determine which one best meets your specific requirements.

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Gc(s)=2; Gp(s) = 2/((s*(s+7)(s+7))

Determine the steady-state error for the closed-loop system, with a reference at unit step

Answers

The steady-state error for the closed-loop system, with a reference at unit step is 0.0439.

Part A: The steady-state error for the closed-loop system, with a reference at unit step is 0.0439.

Part B: Let's use the formula for steady-state error when the reference input is a unit step: e_ss = 1 / (1 + K_p), where K_p is the position error constant. K_p is defined as the constant gain in the open-loop transfer function K_p G(s).

We can calculate K_p as follows: K_p = lim_{s\to0} s G_c(s) G_p(s) = lim_{s\to0} s (2) \frac{2}{s (s + 7)^2} = 4.48

The steady-state error is then:e_ss = 1 / (1 + K_p) = 0.0439.

Therefore, the steady-state error for the closed-loop system, with a reference at unit step is 0.0439.

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Design a parametrized combinational logic circuit that adds / subtracts two unsigned N-bit
unsigned numbers A, B. The circuit should have a carry input Cin and a carry output Cout along with an
overflow detection signal OvF. (Refer to pp. 293-310 in Ciletti’s Book). Parameters N = 4, Inputs: [N-1:0]
A, [N-1:0] B, Cin, Outputs [N-1:0] S, Cout, OvF

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The addition is carried out using a standard full adder, while the subtraction is done by taking the two's complement of the second number B and adding it to the first number A using a standard full adder with Cin equal to 1.

Here is the solution to design a parametrized combinational logic circuit that adds/subtracts two unsigned N-bit unsigned numbers A and B: A 4-bit full adder is made of 4 1-bit full adders that are combined using the carry out of the previous adder as the carry in of the next one.

The overflow detection signal is triggered when the sum of two positive numbers is a negative number, or when the sum of two negative numbers is a positive number.

It implies that we must examine the sum and the carry bits:

OvF = (sum of MSBs XOR carry out)

If there is a carry out from the MSB, it is not included in the sum, since it is beyond the number of bits that can be represented by N bits. The addition is carried out using a standard full adder, while the subtraction is done by taking the two's complement of the second number B and adding it to the first number A using a standard full adder with Cin equal to 1.

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The __________ method is ideal for a short amount of data and is the appropriate mode to use if you want to transmit a DES or AES key securely.

Select one:
a. electronic codebook mode
b. cipher feedback mode
c. counter mode
d. output feedback mode

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The counter mode is ideal for a short amount of data and is the appropriate mode to use if you want to transmit a DES or AES key securely. What is the Counter mode? The Counter mode is a block cipher mode that was first described by Whitfield Diffie and Martin Hellman.

The Counter mode (CTR) is a stream cipher and block cipher hybrid. CTR mode encrypts and decrypts the plaintext and ciphertext block by block. It uses a random or nonce-based counter value that is appended to the Initial Vector to generate the keystream.

The keystream that is produced by the Counter mode is fed into the XOR operation with the plaintext block. It produces the ciphertext block by applying the block cipher function. The same keystream is used for both encryption and decryption in the Counter mode. The Counter mode can be used for both block cipher encryption and authentication purposes.

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Which sorting algorithm performs better on already sorted list? Which sorting algorithm performs better on average if numbers can be stored in memory Which sorting algorithm performs better on streaming data?Which sorting algorithm performs better on large set of numbers which can not be stored in memory?

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Sorting algorithm that performs better on an already sorted list:

Insertion Sort: Insertion sort performs efficiently on an already sorted or nearly sorted list. It has a time complexity of O(n) for such cases because it only requires shifting elements when encountering an element smaller than the previous element.

Sorting algorithm that performs better on average when numbers can be stored in memory:

Quick Sort: Quick sort is generally considered one of the fastest sorting algorithms on average when the entire dataset can fit in memory. It has an average time complexity of O(n log n). Quick sort achieves this performance by employing a divide-and-conquer strategy and performing in-place partitioning.

Sorting algorithm that performs better on streaming data:

Merge Sort: Merge sort is well-suited for handling streaming data or external sorting scenarios where the entire dataset cannot fit in memory at once. It operates by dividing the data into smaller chunks, sorting them, and then merging them back together. Merge sort has a time complexity of O(n log n) in all cases, making it efficient for handling large or streaming datasets.

Sorting algorithm that performs better on a large set of numbers that cannot be stored in memory:

External Sort using Merge Sort: When the dataset is too large to fit in memory, external sorting algorithms are used. External sorting typically involves using a combination of sorting and merging techniques to process data in chunks that fit in memory. Merge sort is often the basis for external sorting algorithms due to its efficient merging capabilities. By dividing the large dataset into smaller chunks, sorting them individually, and then merging them using external storage (such as disk), merge sort can handle large datasets that exceed memory capacity.

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a) Using the conditions of Linear Time Invariant (LTI) systems, determine whether the following signals are linear and time invariant, and plot the signals using MATLAB. i) \( y[n]=2 x^{2}[n]+x[n] \);

Answers

The conditions for Linear Time Invariant (LTI) systems are as follows:Time invariance (TI)Additivity (A)LTI systems fulfill the following properties:

Heterogeneity

Now let's solve the given equation, i.e., [tex]\({y[n]=2x^{2}[n]+x[n]}\)[/tex]

First, let's see if it meets the additivity condition or not. By replacing x1[n] with A1x[n] and x2[n] with A2x[n] in equation (1), we obtain the following equation:[tex]\[{y_{1}}[n]=2(A_{1}x[n])^{2}+A_{1}x[n]\] \[{y_{2}}[n]=2(A_{2}x[n])^{2}+A_{2}x[n]\][/tex].

By adding [tex]\({y_{1}}[n]\) and \({y_{2}}[n]\),[/tex] we obtain the following equation:[tex]\[{y_{1}}[n]+{y_{2}}[/tex][tex][n]=2(A_{1}x[n])^{2}+2(A_{2}x[n])^{2}+A_{1}x[n]+A_{2}x[n]\][/tex].Equation (3) is the same as Equation (2).

Therefore, the additivity condition is met. It can be concluded that the given equation meets the additivity condition. Now let's see if it meets the Homogeneity condition or not.

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\( 6 . \) What is the output of the following code? int \( \operatorname{Num} 1=25, \operatorname{Num} 2=35 \), Sum \( =10 \); if \( (\operatorname{Num} 1

Answers

The given code has an if-else statement. The code initializes the values of two variables `Num1` and `Num2` as 25 and 35, respectively, and `Sum` is assigned 10.

The output of the given code depends on whether the condition of the if statement `(Num1 > Num2)` is true or false. If the condition is true, the code in the if block will be executed, otherwise, the code in the else block will be executed. Based on the value of `Num1` and `Num2`, the condition `(Num1 > Num2)` is not true.

So the code in the else block will be executed, and the output will be:25 This is because the value of `Sum` is not updated in the if block. The value of `Sum` is initialized to 10 and is not updated in either the if block or the else block. Therefore, the output of the code is 25, which is the value of `Num1`.

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A linear system has the impulse response A linear, time-invariant h(t)=2[u(t-1)-u(t-2)] Determine and sketch the system response to the input x(t)=3[u(t + 1) - u(t-1)]

Answers

The horizontal axis represents t, and the vertical axis represents the system response y(t) and the graph is a horizontal line at y = 6, indicating that the system response remains constant at 6 for all values of t.

The impulse response is given as:

h(t) = 2[u(t-1) - u(t-2)]

The input signal is given as:

x(t) = 3[u(t+1) - u(t-1)]

For the given impulse response, the nonzero interval is from t = 1 to t = 2. Therefore, we will integrate the product of the impulse response and the time-shifted input signal over this interval.

Let's compute the convolution:

y(t) = ∫[from 1 to 2] h(τ)×x(t-τ) dτ

Since h(t) is nonzero only in the interval [1, 2], we can simplify the integration limits:

y(t) = ∫[from 1 to 2] 2[u(τ-1) - u(τ-2)] × x(t-τ) dτ

Now, substitute the expression for x(t):

y(t) = ∫[from 1 to 2] 2[u(τ-1) - u(τ-2)] × 3[u(t-τ+1) - u(t-τ-1)] dτ

Expanding the expression:

y(t) = 6 ∫[from 1 to 2] [u(τ-1) - u(τ-2)] [u(t-τ+1) - u(t-τ-1)] dτ

To evaluate this integral, we need to consider the different cases when the unit step functions overlap or not.

Case 1: t - τ + 1 > 0 and t - τ - 1 > 0

This means τ < t - 1 and τ < t + 1, which is true for τ < t - 1.

In this case, both unit step functions are 1.

Case 2: t - τ + 1 > 0 and t - τ - 1 < 0

This means τ < t - 1 and τ > t + 1, which is not possible.

In this case, both unit step functions are 0, so the integrand is 0.

Case 3: t - τ + 1 < 0 and t - τ - 1 > 0

This means τ > t - 1 and τ < t + 1, which is true for t - 1 < τ < t + 1.

In this case, both unit step functions are 1.

Case 4: t - τ + 1 < 0 and t - τ - 1 < 0

This means τ > t - 1 and τ > t + 1, which is true for τ > t + 1.

In this case, both unit step functions are 0, so the integrand is 0.

Now, we can rewrite the integral considering the different cases:

y(t) = 6 ∫[from t - 1 to t] [u(τ-1) - u(τ-2)] dτ + 6 ∫[from t + 1 to ∞] [u(τ-1) - u(τ-2)] dτ

Simplifying the unit step functions:

y(t) = 6 ∫[from t - 1 to t] dτ + 6 ∫[from t + 1 to ∞] dτ

Evaluating the integrals:

y(t) = 6[t] evaluated from t - 1 to t + 6[t] evaluated from t + 1 to ∞

y(t) = 6[t - (t - 1)] + 6[t + 1 - ∞]

y(t) = 6

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i. Assuming that a hydrogen CCGT has the same thermal efficiency
(on a LHV basis) as a natural
gas CCGT described in Q 1 a., how much hydrogen would be needed
(kg/s) to produce 400
MW of power?
ii. Be

Answers

i. Assuming that a hydrogen CCGT has the same thermal efficiency (on an LHV basis) as a natural gas CCGT described in Q1 a., the amount of hydrogen required to produce 400 MW of power would be 2.73 kg/s.Hydrogen has a lower heating value of 120 MJ/kg and a higher heating value of 141.8 MJ/kg. On the other hand, natural gas has a lower heating value of 48.3 MJ/kg and a higher heating value of 55.5 MJ/kg.The thermal efficiency of the CCGT is given by:

η = W/ LHVWhere,

W = Power output (MW) andLHV = Lower heating value (MJ/s)For natural gas CCGT,

η = 0.6Power output (W) = 400 x 106 LHV = 50.1 MJ/s

Hence, the natural gas required to produce 400 MW of power would be given by:50.1 = W / 48.3 kg/sW = 50.1 x 48.3 = 2,420 MWSo,

the natural gas required = 2,420/ 400 = 6.05 kg/s

The hydrogen required to produce the same power output is given by:

η = W / LHVFor hydrogen CCGT,

η = 0.6Power output (W) = 400 x 106 LHV = 141.8 MJ/sSo,50.1 = W / 141.8 kg/sW = 50.1 x 141.8 = 7,113 MWSo,

the hydrogen required = 7,113 / 400 = 17.78 kg/s ≈ 2.73 kg/sii.

The exhaust gases from hydrogen combustion do not contain any greenhouse gases (GHGs) since hydrogen combustion produces water as its exhaust product. This property of hydrogen combustion makes it an ideal choice to be used as fuel for power generation in order to reduce greenhouse gas emissions. The conversion to hydrogen-based power generation may also reduce our dependence on fossil fuels, which are expected to be depleted in the future. However, the primary challenge with hydrogen is its production, since most of it is produced from fossil fuels which contributes to GHG emissions. Therefore, more research is needed to develop sustainable hydrogen production technologies.

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H(s) = 0.1(s + 1) s² (s+10) Construct the Bode plots of the transfer function on a semi logarithmic graph paper (Provide all the working steps). Compute the Bode plots of the transfer function using MATLAB (Provide all the working steps in order to plot using MATLAB, programming script and graphs). Compare and discuss the similarities and differences between the Bode plots in i. and ii.

Answers

To construct the Bode plots of the transfer function H(s) = 0.1(s + 1) / (s^2)(s + 10), we need to analyze the magnitude and phase response at different frequencies.

In the Bode plot, the magnitude is typically represented in logarithmic scale (in decibels, dB) on the y-axis and the frequency in logarithmic scale on the x-axis. For the transfer function H(s) = 0.1(s + 1) / (s^2)(s + 10), we can analyze the magnitude plot as follows: At low frequencies (ω << 1), the magnitude plot will have a slope of 0 dB/decade. This is because the s^2 term in the denominator dominates, and its effect on the magnitude is negligible at low frequencies. At the corner frequency ω = 1, where the (s + 10) term starts to have an impact, the magnitude plot will start decreasing with a slope of -20 dB/decade. This is a result of the presence of the pole at s = -10 in the transfer function. At high frequencies (ω >> 10), the magnitude plot will have a slope of -40 dB/decade. This is due to the combined effect of the s and (s + 10) terms in the denominator. Overall, the magnitude plot will exhibit a gradual decrease with increasing frequency, with a sharper decline around the corner frequency ω = 1. By comparing the manually constructed magnitude plot (using the guidelines provided) with the MATLAB-generated magnitude plot, you can examine the shape, slopes, and frequency range of the plots to observe similarities and differences. The MATLAB plot will generally provide a more accurate representation of the magnitude response.

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1. Using online resources, find specifications for the following battery types, choosing one from each category: a. Standard Cells: AA, AAA, C, D b. Button Cells: CR2032, CR2016, A76, 303/357, 371/370 2. List the voltage (V) and charge capacity (mAh) for each of the two batteries you choose. Calculate (i) the charge capacity in Coulombs, and (ii) how much energy each of your batteries can store.

Answers

The key features to consider when selecting a gaming laptop include the processor, graphics card, RAM, storage, display quality, and cooling system.

What are the key features to consider when selecting a laptop for gaming?

Typically, the voltage (V) for standard cells like AA, AAA, C, and D is around 1.5 volts. The charge capacity (mAh) can vary depending on the specific brand and model.

For button cells, the CR2032 and CR2016 batteries usually have a voltage of 3 volts, while the A76, 303/357, and 371/370 batteries commonly have a voltage of 1.5 volts. The charge capacity (mAh) for button cells can also vary based on the specific type.

To calculate the charge capacity in Coulombs, you can use the formula: Coulombs = (mAh * 3.6) / 3600. This formula assumes a conversion factor of 3.6 to convert milliamp-hours (mAh) to coulombs.

To calculate the energy stored in the battery, you can use the formula: Energy (Wh) = (mAh * V) / 1000. This formula converts milliamp-hours (mAh) and volts (V) to watt-hours (Wh).

For accurate and up-to-date specifications for specific battery types, I recommend referring to the manufacturer's datasheets or reliable online resources that provide detailed information about the batteries you are interested in.

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The location of the neutral axis for a composite section can be found from what condition? The beam isn't composite. The beam is doubly symmetric. The resultant axial force acting on the cross section is zero. none of these choices The neutral axis of a beam in the linear elastic range always passes through which part of the beam? O the bottom of the beam the top of the beam the centroid of the beam half way from the top or bottom of the beam.

Answers

The location of the neutral axis for a composite section can be found from the condition that the resultant axial force acting on the cross-section is zero.

This is the main answer to the question. Here is the explanation:The location of the neutral axis for a composite section can be found from the condition that the resultant axial force acting on the cross-section is zero. The neutral axis is the line on a cross-section of a beam where the tensile and compressive stresses are zero.

In other words, the neutral axis is the line through the cross-section where the bending moment is zero.A beam in the linear elastic range has its neutral axis passing through the centroid of the beam. Thus, the correct answer to the second part of the question is the centroid of the beam.

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What is a transducer used for? Why is it especially meaningful in sensor applications? Explain.

Answers

A transducer is used to convert energy from one form to another. In sensor applications, it is significant because it transforms a physical quantity into an electrical signal that can be detected, measured, and used for a specific purpose.

A transducer is an electronic device that transforms energy from one form to another. This device converts physical quantity such as temperature, pressure, force, and sound into an electrical signal that can be detected, measured, and used for a specific purpose. It is commonly used in many devices, including microphones, speakers, thermometers, and more.

The most important aspect of a transducer in sensor applications is that it transforms a physical quantity into an electrical signal that can be used by a device. In other words, it provides a way for devices to detect and measure physical quantities in the environment, such as temperature, pressure, and more.

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Write a computer program in any language to calculate the shunt capacitive reactance spacing factor for spaces equal to 0, 1, 2... and 49 feet,

Answers

The shunt capacitive reactance spacing factor can be calculated using the formula:  Ks = [1 - tanh(0.00333 δ)] / [1 + tanh(0.00333 δ)]Where δ is the distance between the conductors in feet.

To calculate the shunt capacitive reactance spacing factor for spaces equal to 0, 1, 2, …, and 49 feet, we can write a computer program in any language. Here is an example program written in Python:```pythonimport mathdef calculate_Ks(delta):    Ks = (1 - math.tanh(0.00333 * delta)) / (1 + math.tanh(0.00333 * delta))    return Ksfor delta in range(50):    Ks = calculate_Ks(delta)    print("For δ =", delta, "feet, Ks =", Ks)```In this program, we first define a function called `calculate_Ks` that takes the distance between the conductors in feet as an input and returns the shunt capacitive reactance spacing factor using the formula.  If you are using a different unit of distance, you may need to adjust the constant accordingly.

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The fuel cost in $/hr of 3 thermal plants of power system are; F1=200+7.0PG1+0.008PG1^2, F2=180+6.3PG2+0.009PG2^2, F3=140+6.3PG3+0.007PG3^2 That outputs are subjects to 10MW ≤ 85MW 10MW ≤ 80MW 10MW ≤ 70MW Assume real power loss is given by the simplify power expression P(p.u)=0.00218PG1^2+0.0228PG2^2+0.0779PG3^2,Where the loss coefficient are specify in p.u on a 100MVA base. Determine the optimal dispatch of the generation when the total system load is 150MW

Answers

The optimal dispatch of generation is PG1 = 40.6 MW, PG2 = 54.1 MW and PG3 = 55.3 MW.

Given: Fuel cost of three thermal plants of power system, F1=200+7.0PG1+0.008PG1^2F2=180+6.3PG2+0.009PG2^2F3=140+6.3PG3+0.007PG3^2

Total system load = 150 MWR1 = 0.00218, R2 = 0.0228, R3 = 0.0779

We have to find the optimal dispatch of generation.

Solution:

We know that fuel cost of thermal plants are given by, F1=200+7.0PG1+0.008PG1^2F2=180+6.3PG2+0.009PG2^2F3=140+6.3PG3+0.007PG3^2

The total system load is 150 MW,

Therefore PG1 + PG2 + PG3 = 150MW

Now we have to calculate the total cost of generation.

The total cost is given by, CT = F1 + F2 + F3 + R1 PG1^2 + R2 PG2^2 + R3 PG3^2

By substituting values, CT = (200 + 7PG1 + 0.008PG1^2) + (180 + 6.3PG2 + 0.009PG2^2) + (140 + 6.3PG3 + 0.007PG3^2) + 0.00218 PG1^2 + 0.0228 PG2^2 + 0.0779 PG3^2

By substituting the value of PG1 + PG2 + PG3 = 150 MW from equation (1), CT = (200 + 7PG1 + 0.008PG1^2) + (180 + 6.3PG2 + 0.009PG2^2) + (140 + 6.3(150 - PG1 - PG2) + 0.007(150 - PG1 - PG2)^2) + 0.00218 PG1^2 + 0.0228 PG2^2 + 0.0779(150 - PG1 - PG2)^2

On simplifying we get, CT = 0.008 PG1^2 + 7.7 PG1 + 0.009 PG2^2 + 6.3 PG2 + 0.0014 PG1 PG2 + 0.00308 PG1 (150 - PG1 - PG2) + 0.00254 PG2 (150 - PG1 - PG2) + 3030.045

By taking partial derivatives with respect to PG1 and PG2, ∂CT/∂PG1 = 0.016 PG1 + 7.7 - 0.00308 (150 - 2PG1 - PG2) - 0.0014 PG2And ∂CT/∂PG2 = 0.018 PG2 + 6.3 - 0.00254 (150 - PG1 - 2PG2) - 0.0014 PG1

Let these equations be (2) and (3) respectively.

For optimal dispatch of generation, the partial derivatives must be equated to zero, ∂CT/∂PG1 = 0 and ∂CT/∂PG2 = 0

Equating equation (2) to zero 0.016 PG1 + 7.7 - 0.00308 (150 - 2PG1 - PG2) - 0.0014 PG2 = 0

Solving the above equation, we get PG1 = 40.6 MW

And, equating equation (3) to zero0.018 PG2 + 6.3 - 0.00254 (150 - PG1 - 2PG2) - 0.0014 PG1 = 0

Solving the above equation, we get PG2 = 54.1 MW

On substituting the values of PG1 and PG2 in the equation (1),PG3 = 150 - PG1 - PG2 = 150 - 40.6 - 54.1 = 55.3 MW

Therefore the optimal dispatch of generation is PG1 = 40.6 MW, PG2 = 54.1 MW and PG3 = 55.3 MW.

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"one of the most important trends in american society is the increasing interaction of business and government." this quotation signals the need for better recognition and understanding of the interactions between business and government. discuss the importance of this interaction and why a clear understanding ofQuestion: CASESTUDY WORK In PUBLIC ADMINISTRATION 2. "One Of The Most Important Trends In American Society Is The Increasing Interaction Of Business And Government." This Quotation Signals The Need For Better Recognition And Understanding Of The Interactions Between Business And Government. Discuss The Importance Of This Interaction And Why A Clear Understanding OfCASESTUDY WORK In PUBLIC ADMINISTRATION2. "One of the most important trends in American society is the increasing interaction of business and government." This quotation signals the need for better recognition and understanding of the interactions between business and government. Discuss the importance of this interaction and why a clear understanding of the relationship between the public and private sector is necessary. Using any DBMS to implement Banking Database. Data Definition Language (DDL) (24 Points) 1. Create a table named Bank with the following rules and constraints (5 Points) Create table bank (Bank id mum C#How would you pass values to a base class constructor?The baseParam methodThe partial class referenceThe initialization list of the child class constructorThe super methodThe parent reference You connect a battery, resistor, and capacitor as in (Figure 1), where R=17.0 and C=5.0010 6F. The switch S is closed at t=0. When the current in the circuit has magnitude 3.00 A, the charge on the capacitor is 40.010 6C. What is the emf of the battery? Express your answer with the appropriate units. is Incorrect; Try Again; 5 attempts remaining Part B At what time t after the switch is closed is the charge on the capacitor equal to 40.010 6C ? Express your answer with the appropriate units. When the current has magnitude 3.00 A, at what rate is energy being stored in the capacitor? Express your answer with the appropriate units. Part D When the current has magnitude 3.00 A, at what rate is energy being supplied by the battery? Express your answer with the appropriate units. Question: I am a bit new using () I am using it to getthe expected output but I seem to be getting extra space. Not surewhy.import res = 'Hello there." l = (r"(\W+)", word) print(l Which part of the peripheral nervous system would be particularly important to a backpacker being chased by an angry bear?A. SympatheticB. IntrinsicC. ParasympatheticD. Involuntary muscles Which of the following transitions would best complete this sentence?These are all the reasons I don't like the new Web sitedesign.I support the old look.OA. In generalOB. FirstC. In additionD. Instead4SUBMIT the primary key contained in the vendor master record is the Connect Problem 1010 (algo) The central bank of the fictitious country "Alpha" raises bank reserves by $100. What effect will the increase in bank reserves have on the money supply in each of the following situations: a. If the banking system is a 100% reserve banking system, the money supply will increase by $ b. If the banking system is a fractional reserve banking system with a desired reserve deposit ratio of 0.4, the money supply will Increase by $ You own an appliance store and sell a wide variety of appliances, including washer and dryer sets. One particular set has a dryer that has caused several of your customers issues. They are upset with the purchase, the dryer either doesnt work or cooks their clothes, and they want you to help them.Given what you know about products liability:1. What is your biggest concern? Why?2. What do you think you can do to help your customers, and yourself as a business owner, regarding this particular, possibly dangerous dryer?Remember to frame the question in terms of the law, without an over-focus on customer service (which is, of course, important). You purchased a bond at a price of $2,000. In 15 yearswhen the bond matures, the bond will be worth $10,000. It is exactly 9 years after you purchased the bond and you can sell the bond today for $6,100. If you hold the bond until it matures, what annual rate of return will you earn from today? 13.2 percent 7.7 percent 11.3 percent 9.5 percent 8.6 percent A client recovering from surgery needs to be ambulated in the room twice a day. For which reason should the nurse question the use of a gait belt when ambulating this client?encourage the client to walk in the hallshortening of the affected extremity with external rotationClient is recovering from abdominal surgery.