The statements given in options A, C, D, and E are correct in the context of a DC motor.
A DC motor is referred to as an electronic machine that transforms electrical energy into mechanical energy. A DC motor operates using direct current. In asscoaictaion with a DC motor following statements are true:
In a DC motor, back or induced emf results from the magnetic force exerted by the stator on the charges in the rotor. A DC motor draws a current 'i'. The internal resistance of the motor is 'r'. If 'v' is the voltage applied at the terminals of the motor, then back emf epsilon is the difference between 'v' and 'i' 'r'. A DC generator has the same main parts as a DC motor, i.e. rotor, stator, commutator, and brushes. A DC motor converts electrical energy into mechanical energy; whereas a DC generator converts mechanical energy into electrical energy.However, the following statements are not correct in relation to a DC motor.
Back emf is the useful energy output as a result of the interaction between the rotor and the stator of a motor.The purpose of brushes in a dc motor or generator is to keep the commutator clean of any dirt or foreign objects.You can learn more about DC motor at
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In the mesh created, you should have 1000 elements and 1111 nodes. How many values will Fluent have to determine directly by solving a system of algebraic equations? Please input answers as an integer (eg. 1, or 80, or 150, etc.)
The number of values that the Fluent will have when 1000 elements and 1111 nodes are created is 20
What will the number of values be?Number of elements along x direction is m and along y direction is n.
So, m × n = 1000 ( Elements)
And m × n + m + n + 1 = 1111 (Nodes)
Or, m + n = 1000
If m = 100 then n = 10. These values satisfy both the equations.
Now, for each element there will be one velocity component, pressure or temperature. So, 1000 algebraic simultaneous equations will be there for each case.
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what are the advantages of a single-phase full-wave bridge rectifier over the full-wave rectifier with center-tapped transformer
In a full-wave rectifier with a center tap, a single diode conducts once every half cycle.In contrast, two diodes connected in series conduct once every half cycle in a bridge rectifier.As a result, a bridge rectifier has a higher voltage drop.
Why is a Full Wave Bridge Rectifier better than a Full Wave Center Tapped Rectifier?A bridge rectifier does not require a bulky center tapped transformer, nowadays the center tapped transformers are costlier than diodes and a step-down transformer hence reduced size and cost.The bridge rectifier's principal benefit is that it generates roughly twice as much output voltage as a full-wave rectifier using a center-tapped transformer.However, this circuit is similar to a low-cost rectifier because it does not require a center-tapped transformer. A half-wave rectifier is less efficient than a bridge rectifier.However, the center-tapped full-wave rectifier and the Bridge Rectifier can have the same efficiency.Compared to a half-wave rectifier, a bridge rectifier produces a smooth output.To learn more about full-wave bridge rectifier refer
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the amount of heat required to evaporate the refrigerant in a cycle is 200 kj/min. the work supplied to the compressor is 50 kj/min. calculate the cop.
The COP is now worth around 1.34.Lower values of COP will be produced by lower cold space and greater warm space temperatures.
A freezer's COP is what?A deep freeze unit will be closer to 1.0 than a typical domestic refrigerator, which could have a coefficient of performance (COP) of around 2.5. Lower values of COP will be produced by lower cold space and greater warm space temperatures.The formula for calculating the coefficient of performance, or COP as it is more popularly known, is COP = ((T2)/(T2 - T1)), where T2 stands for the hot temperature and T1 for the cold temperature. These can also be, similarly: COP = heat ejected / (heat ejected - heat provided)In the absence of it, COP = 200 / (200 - 50) = 1.34As a result, the COP is worth around 1.34.To learn more about COP refer to:
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g you are designing a concrete mixture for a concrete wall that requires a compressive strength of 5700 psi. the system requires no air entrainment, but is wet continuously. what is the appropriate water to cementitious materials ratio that should be used in this mixture?
One-fifth the narrowest dimension between the sides of forms, bundles of bars, prestressing tendons, or prestressing ducts should be the maximum size of coarse aggregate.
Concrete mix proportioning, also known as mix design, is a procedure that entails two linked steps: (1) choosing the appropriate materials, and (2) figuring out their relative ratios to make concrete with the right workability, strength, and durability as economically as feasible. The 1:2:4 ratio is used to blend the three essential components of this concrete, which are concrete, sand, and aggregate. This results in concrete of average strength. Depending on the qualities of the cement and the local weather at the concrete site, it can take anywhere from 30 to 90 minutes to set.
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Q4. Consider the skier on a slope shown in the figure below. Her mass including equipment is 60.0 kg.
(a) What is her acceleration if friction is negligible?
(b) What is her acceleration if friction is known to be 45.0 N?
Note that the Skier's acceleration if friction is near zero is 4.14m/s, while her acceleration if friction is 45.0N is 3.39m/s.
What is acceleration?In mechanics, acceleration is defined as the rate of change of an object's velocity with respect to time. Vector quantities are accelerations. The orientation of an object's acceleration is determined by the orientation of its net force.
The change in velocity (v) over the change in time (t) is expressed by the equation a = v/t. This enables you to calculate how quickly velocity varies in meters per second squared (m/s²).
To arrive at the above values, note that we are given:
Mass = 60Kg
Friction = 45N
The formula for acceleration used here is:
a = g x sinθ. where
a = acceleration
g = gravity constant and
Sinθ is the angle of incline.
This is because acceleration is directly proportional to the sine of the incline angle (θ), When sinθ is 1, the angle of the incline is 90°. Incline here accounts for the incline of the skier's body as she descends.
Hence:
a = 9.8 x sin25°
a = 9.8 x 0.422
a = 4.14m/s where friction is negligible.
B)
Where friction is 45.0N, we must use the following formula to account for same:
a = g x sinθ - (f/m);
Where f is friction (45.0N) and
m is mass (60kg)
substituting the values we have:
a = 9.8 x sin 25° - (45/60)
a = 9.8 x 0.422 - 0.75
a = 4.14 - 0.75
a = 3.39 (m/s)
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if there are 20 turns in the primary and only 10 in the secondary and the transformer operates at 120v, the voltage in the secondary is .
If the transformer works at 120 volts and there are 20 turns in the primary but only 10 in the secondary, the voltage in the secondary is 60 volts.
Np/Ns=Ep/Es
20/10=120/Es
2Es=120
Es=60 v
Voltage is the variation in electric potential between two places. It is sometimes referred to as electric pressure, electric tension, or potential difference. The work required to transport a test charge between two places in a static electric field correlates to this. The energy per unit charge is known as voltage, also known as electromotive force. Voltage is the difference in electric potential between two points, to put it another way. Simply put, current is the rate of flow of an electric charge. Voltage is a unit used to measure the electrical potential that a battery has. Depending on the size and design, batteries range in voltage from a few hundredths of a volt to several hundreds of volts.
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which material/beam tested showed the least deflection? a. aluminum beam a (0.5 x 0.5) b. aluminum beam b (0.25 x 0.5) c. steel beam d (0.5 x 0.5) d. aluminum beam c (0.5 x 0.25)
Option c is correct. The steel beam d (0.5 x 0.5) tested showed the least deflection. Beam deflection refers to the state in which a beam has changed from its initial shape as a result of a force, load, or weight.
Beam deflection refers to the state in which a beam has changed from its initial shape as a result of a force, load, or weight. Obtaining equations that allow us to accurately calculate beam deflections in a variety of real-world situations is one of the most significant uses of beam deflection. Analysis of statically indeterminate beams also takes into account deflections.
In terms of structural engineering, deflection is the movement of a beam or node from its initial position as a result of loads and forces acting on the member. It is also referred to as displacement and can result from externally applied loads as well as from the structure's own weight and the force of gravity that applies to it.
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what are the seven steps taken in commissioning an instrument
The Seven steps taken in commissioning an instrument are
step-1 Planning
step-2 Factory Acceptance testing
step-3 Mechanical completion
step-4 On-site commissioning
step-5 Process/ System startup
step-6 Performance Verification
step-7 Operational Readiness
What takes place in On-site commissioning?
Pre-commissioning tasks for mechanical systems include pipe cleaning and flushing, pressure testing, and leak testing.
What takes place in Performance verification?
The commissioning team makes any adjustments to the plant's process operation after consulting with the owner, the consultant SME, and both.
A systematised approach to commissioning paperwork. writing up testing and verification methods for all crucial system performance elements.
Therefore, the seven steps are given.
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From the list of problems below, check all that are known to be NP-complete. You do not need to justify your answer. (Set cover) Given a graphGand an integerk, find a set of verticesUof size at mostksuch that every edge is adjacent to at least one vertex inU. (Max SAT) Given a CNF formula and an integer g, find a truth assignment that satisfies at leastgclauses. (Linear programming) Given am×nmatrixA, and vectorsb∈Rm,c∈Rn, find the solution of maxcTx s.t. Ax≤bx≥0(MST) Given an undirected, weighted graphG=(V,E)find a minimum spanning tree ofG, or outputs FALSE if such tree does not exist.
Any computing issue that falls within the category of NP-complete problem has yet to find an effective solution algorithm.
Which problems are NP-complete?Any of a family of computer problems that have no effective solution algorithm are referred to as NP-complete issues. The traveling salesman problem, satisfiability issues, and graph-covering issues are only a few examples of the significant computer science issues that fall under this category.The difficulty of NP and NP-Complete issues is equal. If a problem is included in both NP and NP-Hard Problems, it is said to be NP-Complete. This statement, "This problem can change into an NP-complete problem on a non-deterministic Turing machine," is untrue for the obvious reason that while any problem in P is also a problem in NP, no problem in P is an NP-complete problem (unless P=NP, of course). If P is an NP problem and all NP problems convert into NP-complete problems, then P must also undergo this transformation.To learn more about NP-complete problem refer to:
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a steel is known to contain 93.8 wt% fe, 6.0 wt% ni, and 0.2 wt% c. (a) what is the approximate eutectoid temperature of this alloy?
The eutectoid temperature of this alloy at 6.1 weight percent is approximately 650°C or 1,200°F.
What is meant by eutectoid point?a spot on a phase diagram that shows an alloy's eutectoid composition and eutectoid temperature.Additionally, the eutectoid point identifies the spot where three solid phases coexist. This point implies a temperature of 1333 F and a carbon concentration of 0.8% in the iron-carbon phase diagram.when a single solid phase separates into two distinct solid phases as it cools.At a specific temperature and composition, eutectoid transformations occur and typically result in a unique structure.Information given:
93.8 wt% Fe, 6.0 wt% Ni, and 0.2 wt% C make up the steel alloy.
Additionally, we also presum that Ni has been added but that the limits of positions with other phases have not changed.
According to the information above, the eutectoid temperature of this alloy at 6.1 weight percent is approximately 650°C or 1,200°F.
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which of the following is not a manufacturing process? group of answer choices job shop paint shop line flow continuous flow
Production line/ assembly line is not a manufacturing process. A factory assembly line that builds a product by transferring work from one station to the next until the product is complete.
A production line is a collection of coordinated procedures set up in a factory where parts are joined together to create finished goods or where raw materials are processed to create finished goods fit for consumption.
Usually, in order to make raw materials functional, such as metal ores, agricultural products like foodstuffs, or textile source plants like cotton and flax, a series of treatments is needed. The procedures for metal include crushing, smelting, and more refinement. For plants, the valuable material needs to be removed from the husks or other impurities before being processed for sale.
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a steel cylinder whose capacity is 71.2 cubic feet at 2475 psi and an aluminum cylinder whose capacity is 80 cubic feet at 3000 psi are both filled to 2000 psi. which cylinder contains more air?
The steel Cylinder . you need to compare how much capacity each psi accounts for in a steel cylinder.
71.2cf divided by 2475 psi gives a value of.0287cf for each psi.
If you divide 80cf by 3000psi, you get.0266cf per psi in an aluminum cylinder.
Steel .0287cf per psi X 3000=57.4cf.
Aluminum .0266cf per psi X 2000psi = 53.2cf.
What is a cylinder?
In geometry, a cylinder is one of the basic 3d shapes with two parallel circular bases at a distance. A curved surface connects the two circular bases at a fixed distance from the center. The axis of the cylinder is the line segment connecting the centers of two circular bases. The height of the cylinder is defined as the distance between the two circular bases. One real-world example of a cylinder is an LPG gas-cylinder.
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What three modern products would not be available without watt’s contribution to the field?.
Locomotives, steam ships, and factories with coal-powered machinery these modern products would not be available without watt’s contribution.
How did James Watt's invention affect society?The industrial society of the 18th century was significantly impacted by James Watt's steam engine. Compared to preceding models, it was more economical and efficient.
The watt, a unit of power in the International System of Units (SI) equal to one joule of work performed per second, was called in honour of Watt because of his contributions to science and industry.
Watt's steam engine allowed the steam engine to be utilised to drive rotating equipment in factories like cotton mills, expanding its range of potential uses. It should come as no surprise that Watt's steam engine was in high demand and was swiftly adopted by numerous industries.
His modifications to the steam engine's design transformed it from a water pump for coal mines with few other uses into the source of propulsion that sparked the Industrial Revolution. Rather than being a theorist, Watt is better renowned for his work as an innovator and mechanic.
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During this experiment, it was important to keep some parameters constant so we can compare the efficiency of different alcohols. Which one of the parameter was not constant?.
The purification of a wide range of materials involves the use of distillation, a significant commercial procedure.
The purification of a wide range of materials involves the use of distillation, a significant commercial procedure. However, it would definitely be helpful to clarify the terms that describe the procedure and related qualities before we start a discussion of distillation.
Although you may be familiar with several of these terms, you might not be aware of their precise definitions. Let's start by outlining the procedure for changing a material from its condensed phase to its gas phase. This process is known as sublimation for solids and vaporization for liquids. Both procedures call for heat.
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If a microhydro dam generates 1 mw of power, how much energy will it produce annually?.
The micro-hydro dam will produce 8.76 MUs of energy annually.
Given that the micro-hydro dam generates 1 MW of power.
To determine the energy will it produce annually.
1 Kwh Equals 1 unit of electricity ( kW hours)
A 1 MW plant is a 1000 KW plant.
If a plant operates at full capacity 24 hours a day, the number of units produced in a day is:
1000 KW multiplied by 24 hours is 24000 Kwh or 24000 units.
Units manufactured in a given year (assuming it works all 365 days in a year)
1000 KW multiplied by 24 hours multiplied by 365 is 8,760,000 Kwh or 8.76 Million Units = 8.76 MUs
Thus, the micro-hydro dam will produce 8.76 MUs of energy annually.
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14. Current flow between the main terminals of a triac is
a. In one direction only
b. In either direction
c. Constant at all times
d. Less than the gate current flow value
16. A triac can serve as the switching device for a programmable logic controller AC output module. (True/False)
17. Answer the following with reference to the triac variable AC control circuit shown in Figure 9-27.
a. The control logic controls the which the triac is switched on.
b. The output waveform is still AC, but the adjustable. on the AC waveform at current value is
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if the maximum stress in the elastic limit for a piece of plastic is 350 mpa (mega-pascals), what will happen to the plastic after it is subjected to a 355 mpa stress?
If a piece of plastic can withstand a maximum stress of 350 mpa, its elastic limit (mega-pascals) It'll change shape forever.
The definition of permanent deformity?Permanent deformation refers to a structural part of a rail vehicle going through a permanent change in shape. When a material experiences tensile, compressive, bending, or torsion loads that are greater than its yield strength, causing it to stretch, compress, buckle, bend, or twist, this irreversible distortion is known as plastic deformation. The strain that results from stressing rocks might be elastic, ductile, or brittle. Deformation is a broad term for this transformation. After a stress is discharged, elastic deformation is strain that may be reversed. For instance, a rubber band will elastically return to its former shape after being stretched.
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after servicing the air filter on an etc equipped vehicle, the technician has forgotten to connect the throttle motor wiring. what will happen when the vehicle is started?
If the technicians has forgotten to connect the throttle motor, then when the vehicle is started, the engine will start but not accelerate, idle speed between 1200 and 1600 RMP.
A throttle is a device used to control fluid flow through restriction or barrier. The limiting of incoming gases (through the use of a throttle) can increase or decrease an engine's output, but usually decreases it. Informally, the term "throttle" now denotes any device used to control an engine's power or speed, such as the accelerator pedal on an automobile.
In the context of aviation, what is frequently referred to as a throttle is also known as a thrust lever, particularly for aircraft powered by jet engines. The regulator is the term for the valve that regulates steam in a steam locomotive.
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normally counters are retentive. this means that if your accumulated count is up to 300 and power to your system is lost, when power is restored the a
The correct answer is when retentive power is restored the accumulated count will be 300.
PLC counters are normally retentive; that is, whatever count was contained in the counter at the time of a proces- sor shutdown will be restored to the counter on power-up. The counter may be reset, however, if the reset condition is activated at the time of power restoration.A counter instruction is an input instruction. A counter's input signal can come from an external device such as a sensor. Up and down counters may be programmed together to count up and down. Counters can count past their preset values.
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What distinguishes an architect’s use of creative thinking and an architect creating drafts, layouts, and specifications?
Only the activities of drafts, layouts and specification involves applied art skills distinguishes an architect’s use of creative thinking Hence option A is correct.
What is creative thinking?Creative thinking is defined as the capacity to tackle a situation or difficulty from a novel angle, alternate perspective, or unconventional thinking. Creative thinking, also referred to as creative problem-solving, is an important and marketable soft skill in a wide range of industries.
The architect will think about the creative changes in drafting the text, in making the specifications and in making new and affective layouts.
Thus, only the activities of drafts, layouts and specification involves applied art skills distinguishes an architect’s use of creative thinking Hence option A is correct.
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To cool a given room it is necessary to supply 4ft^3/s of air through a 8-in diameter pipe. approximately how long is the entrance length of the pipe
The pipe's entrance measures 17.7 feet.
The axial distance required to arrive at a value of Nu(x) that is 1.05 times the fully defines the thermal entry length Lth.
What is the entrance length of the pipe?Entrance length is the measurement of the length of the entry zone, which is the space immediately after the pipe entrance.The dimensionless Reynolds number, Prandtl number, and pipe diameter all affect the thermal entrance length. To determine thermal entry length, the Prandtl number modifies the hydrodynamic entrance length.When viscosity effects are entirely present and pipe entry effects are not taken into account, a pipe flow is said to be fully developed. Consider a pipe flow that is incompressible. Pressure. The length of the hydrodynamic entry LHY is defined, a little haphazardly.To learn more about entrance length of the pipe refer to:
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Consider a datagram network using 32-bit host addresses. Suppose a router has four links, numbered 0 through 3, and packets are to be forwarded to the link interfaces as follows: Describe how your forwarding table determines the appropriate link interface for datagrams with destination addresses: 11001000 10010001 01010001 01010101 11100001 01000000 11000011 00111100 11100001 10000000 00010001 01110111
The forwarding table will determine the appropriate link interface for the datagram with destination addresses in the following way:
Deine a datagram. What is its use?
A datagram is a fundamental transfer unit connected to a packet-switched network, or it can be described as a message delivered over the network whose arrival, arrival time, and content are not guaranteed. Header and payload portions are the typical organizational units of datagrams. A packet-switched network can use a datagram to communicate without establishing a connection.
A datagram is a self-contained message that is mostly used for wireless communication. Its source and destination addresses are listed in the header. A datagram is a short amount of data that can only be transferred once; unlike a packet, which is a connectionless protocol, a datagram cannot handle communication of any other data.
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what is the most important action for the cota to take first when molding heated thermoplastic material during fabrication of a hand-based orthotic?
Custom splints are most frequently made using low temperature thermoplastic (LTT) materials. Materials have a low melting point because water softens them.
A thermoplastic splint: what is it?A thermoplastic splint is a specially manufactured medical device intended to address rheumatic or orthopaedic issues with the upper limb (fingers, hand and wrist). You can use it at any age. It is constructed of plastic that can be molded, and it can be altered and exactly matched to a limb. Custom splints are most frequently made using low temperature thermoplastic (LTT) materials. Materials are low temperature because water heated to between 135 and 180 degrees fahrenheit causes them to soften. When plastic is heated, it becomes malleable and, after cooling, returns to its previous hardness.Custom splints are most frequently made using low temperature thermoplastic (LTT) materials. Materials have a low melting point because water softens them.To learn more about Melting point refer to:
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9.35 wp air enters the compressor of an ideal air-standard brayton cycle at 100 kpa, 300 k, with a volumetric flow rate of 5 m3/s. the turbine inlet temperature is 1400 k. for compressor pressure ratios of 6, 8, and 12, determine a. the thermal efficiency of the cycle. b. the back work ratio. c. the net power developed, in kw.
The calculated values are thermal efficiency 0.48 back work ratio is 0.414 and power is 2303.4
P₁= 100 KPa
T₁=300 K
Q=5 m3/s volume flow rate
T₃=1400 K
r= 10
We are aware that the specific heat constant pressure for air is 1.005 KJ/kg and the heat capacity ratio is 1.4.
γ= 1.4
Cp = 1.105 KJ/kg.
in the Brayton cycle
Putting the values now
T₂=1.93 x 300
T₂=579 K
Putting the values now
T₄=726.32 K
We are aware of efficiency.
Heat addition is well known.
Q a= (T3-T2) Cp
rejection of heat
Qr= (T4-T1) Cp
η = 0.48
Work-to-back bwr=0.414
c)
Net heat = Net work
Heat flux = Qa – Qr
Qr= (T4-T1) Cp
Q a= (T3-T2) Cp
Net heat is equal to 1.005 (1400-579-726.32+300) KJ/kg.
396.65 KJ/kg of net energy
The fact that
P V = m R T
P = ρ R T
P= 2303.42 KW
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technician a says that hydrogen exists by itself in nature. technician b says that hydrogen has better specific energy than fossil fuels. which technician is correct?
Technician b says that hydrogen has better specific energy than fossil fuels. so technician b is correct.
Does hydrogen have the highest specific energy?Although hydrogen has the highest energy density per mass of any fuel, it has the lowest energy density per unit volume due to its low ambient temperature density, necessitating the development of new storage technologies with the potential for higher energy density.Hydrogen is utilized as a rocket fuel and in fuel cells to generate power on some spacecraft because it is beneficial as an energy source or fuel due to its high energy content per unit of weight.Since hydrogen has a significantly higher energy content than fossil fuels, less of it is required to carry out any given task.To learn more about energy refer to:
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which component in a truck cooling system requires that the coolant has some lubricating properties?
Answer:
The internal combustion engine has explosions inside of it regularly. Think about when you’re stepping on the gas pedal to accelerate quickly. How is the engine creating all that power for your vehicle to move faster?
There are an estimated 4,000 explosions taking place inside your engine every minute if you have a 4-cylinder engine and traveling at 50 mph. This is the process where the air and fuel mixture is ignited by the spark plugs to generate the power needed to move the wheels underneath your vehicle.
When you have so many explosions taking place this quickly, there is a lot of heat generated in the engine. These high temperatures could permanently damage the engine within minutes. The only thing which stops this from happening is the car’s cooling system.
The cooling system lowers the temperatures in the engine so that it doesn’t suffer any damage. Instead, it keeps the engine cooled enough to where it can keep operating smoothly.
Do not confuse the cooling system with the air conditioner because they’re actually two different systems in the car. The cooling system focuses specifically on cooling the engine, while the air conditioner focuses on cooling the people inside the vehicle.
If you had to choose which one was more important, then it would have to be the cooling system. You could possibly survive without air conditioning, but you cannot survive with a cooling system for your engine. If your cooling system doesn’t work, then your engine will die quickly.
technician a says that the front toe determines the thrust angle. technician b says that a tolerance adjustment involves removing and reinstalling subframe bolts. which technician is correct?
Answer:
Technician B
Explanation:
a food storage chamber requires a refrigeration system of 15-ton capacity operating at an evaporator temperature of -8oc and a condenser temperature of 30oc. refrigerant ammonia (r-717) is used and the system operates under saturated conditions. determine:
A refrigeration system with a 15-ton capacity is necessary for a food storage chamber. The effect of cooling is 983.152 KJ/kg, and the rate of heat production is 6926.3 KW.
so ,
h3 = h4 = 323.08 kJ/Kg
So ,
Refrigeration effect RE = hi - hy
= 1306.1232 - 323.08
RE = 983.152 KJ/ kg
so , Refrigerent flow rate m= 52.5/983.152
m = 0.053 kg/s .
And rate of heat removed by condenser
m(h2-h3)
6.045(1468.87-323.08)
=6926.3 KW
Refrigeration, the procedure of removing heat from a confined area or from a substance in order to lower the temperature By transferring heat from a low-temperature medium to a high-temperature medium, a process known as refrigeration is accomplished.
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5.4-1 the american standard code for information interchange (ascii) has 128 binary-coded characters. if a certain computer generates data at 600,000 characters per second, determine the following. (a) the number of bits (binary digits) required per character. (b) the number of bits per second required to transmit the computer output, and the minimum bandwidth required to transmit this signal. (c) for single error detection capability, an additional bit (parity bit) is added to the code of each character. modify your answers in parts (a) and (b) in view of this information. (d) show how many ds1 carriers would be required to transmit the signal of part (c) in the north american digital hierarchy (sec. 5.4.2).
A bit (binary digit) is a single switch that can be turned on or off, zero or one. ASCII is a 7-bit code.
What is a bit?The smallest piece of data that a computer can process and store is called a bit (binary digit). Similar to an on/off switch for lights, a bit is always in one of two physical states. One binary number, often a 0 or 1, is used to indicate the state. But yes/no, on/off, or true/false can also be used to describe the state. Capacitors that store electrical charges are used to store bits in memory. Each bit's state and value are determined by the charge.Although a computer may be able to examine and change data at the bit level, most systems process and store data in bytes. An eight-bit string that is considered a single unit is called a byte. Computer memory and storage are always described in terms of bytes. For instance, a storage device might be able to hold 1 terabyte (TB), or 1,000,000 megabytes, of data. In order to put this into perspective, 1 MB is equivalent to 1 million bytes, or 8 million bits. In other words, a 1 TB drive can hold 8 trillion bits of data.To Learn more About bit (binary digit) refer to:
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within the function analysis phase of the value engineering job plan the tool used for defining modeling and analyzing functions is known as the
IDEF0 is a function modelling methodology for describing manufacturing functions that includes a functional modelling language for information system analysis.
What is IDEF0 ?The acronym IDEF0 refers to a function modelling methodology for describing manufacturing functions that provides a functional modelling language for the analysis, development, reengineering, and integration of information systems, business processes, or software engineering analysis.IDEF0 is a modelling language in the field of software engineering that is part of the IDEF family. It is based on the functional modelling language Structured Analysis and Design Technique (SADT).The IDEF0 Functional Modeling method is intended to model an organization's or system's decisions, actions, and activities. It is based on the well-known graphic modelling language Structured Analysis and Design Technique (SADT), which was created by Douglas T. Ross and SofTech, Inc. IDEF0, in its original form, includes both a definition of a graphical modelling language (syntax and semantics) and a description of a comprehensive modelling methodology.To learn more about IDEF0 refer :
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