Answer:
A. Electric Control
Explanation:
A. Electric Control
a feeder circuit with no motor load has a continuous load of 10a and a noncontinuous load of 10a. the feeder overcurrent protective device should be sized at ?
The feed overload protective device should have a size of 11.25A based on the information provided in the inquiry.
What is a circuit's straightforward definition?A circuit in electronics is a full circular channel via which electricity flows. A simple circuit entails a current source, wires, and a load. The term "circuit" can broadly be used to describe any ongoing path via which electrical, data, or a transmission might go.
Which four types of circuits are there?Closed circuit, current in the circuit, short - circuits, main design, and parallel circuit are the main varieties of electric circuits. The movement of electrical charges or current has a conductive channel thanks to electric circuits.
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if a 120v feeder for nonmotor loads feeds a continuous load rated at 20a and a noncontinuous load at 30a, what size overcurrent protective device should be selected
The correct response is that a 60A size overload protection device should be chosen based on the facts provided in the question.
A feeder wire is what?Power delivery from site A to point B within a facility is accomplished using feeder cables. Perfect for supplying electricity to specialized equipment or supplying backup energy service during construction. Typically, main feeder cables link large switchboards and electrical distribution transformers.
What serves as a feeder?Feeders operate machinery inside a plant, "feed" or loading raw materials for the finished product. Usually, they are also in charge of offloading the final goods. They maintain, clean, and test machines for damage.
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Your car's radiator is a form of
A. heat exchanger.
B. chiller.
C. boiler.
D. heater plant.
Fill in the blank: Internet search engines are an everyday example of how Boolean operators are used. The Boolean operator _____ expands the number of results when used in a keyword search.
The Boolean operator OR expands the number of results when used in a
keyword search.
Boolean operators are simple words (AND, OR, NOT, or AND NOT) used
For combining keywords, excluding keywords, and productive results.
These operators can greatly reduce or enhance the set of records
returned. Moreover, if we talk about search engines using Boolean operators then these operators allow you to narrow your search
to the most useful results, telling the database that any of your searching terms can be present in the resulting recods.
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A type of heating and air conditioning system that relies only on heated or cooled water to adjust the air temperature is known as a
A. feedback
B. hydraulically controlled
C.hydronic
D. wet
system.
A type of heating and air conditioning system that relies only on heated or cooled water to adjust the air temperature is known as a hydronic. The correct option is C.
What is an air conditioning system?The process of creating and maintaining specific temperatures, relative humidity, and air purity conditions in indoor environments is known as air conditioning. This procedure is commonly used to maintain a level of personal comfort.
A hydronic HVAC system transfers energy throughout the structure by using water as the principal fluid.
Therefore, the correct option is C. hydronic.
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for a bjt to operate as an amplifier, the base-emitter junction must be ? biased and the base-collector junction must be ? biased
For a BJT to operate as an amplifier, the base-emitter junction must be forward biased and the base-collector junction must be reverse biased.
Forward biasing the base-emitter junction allows the BJT to conduct current and reverse biasing the base-collector junction allows it to act as an amplifier.
The base-collector junction must be reverse biased for a BJT to operate as an amplifier. Reverse biasing the base-collector junction allows the BJT to act as an amplifier by controlling the current flow between the collector and the emitter.
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You want to implement a security control that limits tailgating in a high security environment. Which of the following protective controls would you use?
Mantrap
Employ a number of physical security measures to prevent tailgating, including strong physical security measures.
When an unauthorized person enters a guarded location by trailing an authorized person, this is known as tailgating, also referred to as piggybacking. Data breaches and other cyber-attacks may occur as a result of the physical risk posed by tailgating. Tailgaters are intruders with the capacity to cause a lot of harm to a company. According to a 2020 Pokemon Institute report, physical security compromises account for 10% of malicious breaches. Tailgating is when someone illegally enters a building or another restricted area while posing as a real employee, contractor, visitor, etc. Tailgating, or unauthorized physical access, can lead to both cyber-attacks and physical property damage.
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a group of civil engineers who share their knowledge and insights with other civil engineers is an example of a a. task force. b. cross-functional team. c. virtual organization. d. structured organization. e. community of practice.
A project's goals are established by a number of teams that have been involved in the project. the many project teams, including the engineering, procurement, and project controls teams.
How do Functional Teams work?Several teams will be involved in a project, so each team will contribute in its own unique way. The functional team is one form of company in a project. Teams are a specific kind of team that carry out particular organizational duties and include members from various vertical levels within the hierarchy. The engineering team, the procurement team, configure, purchasing, people, and accounting are a few examples of functional teams.
What does it entail to be functioning as a person?A person who can function normally is oneengineers is an example of a a. task force. b. cross-functional team. c. virtual organization. d. structured organization. e. community of practice.
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Figure 1 shows Impact test data for a type carbon steel. Briefly describe the temperature dependency of this material to its mechanical properties
Answer:
Explanation:
Answer:
it gets more ductile as you apply heat
: i have a 20 gallon horizontal tank that has a plastic insert in the inlet. should this be removed or left in place during installation?
The plastic insert in the inlet of a 20-gallon horizontal tank should be left in place during installation.
The plastic insert is there to prevent backflow into the tank and should not be removed. Removing the plastic insert can also create a safety hazard as it can cause the tank to overfill or become pressurized, potentially leading to leaks or other problems. If the plastic insert has become damaged or is not functioning properly, it should be replaced with a new insert before the tank is installed.
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Forces of 50 lb are applied to the handles of the bolt Determine the force exerted on the cutter of Fig. bolt at E and all forces acting on the handle ABC.
The negative symbol shows that the force's direction is the opposite of the forces acting on the handles.
A force of -600 N is being applied to the bolt by the bolt cutter. The negative symbol shows that the force's direction is the opposite of the forces acting on the handles. We must apply the principle of static equilibrium in order to quantify the forces applied to the bolt by the bolt cutter. According to this idea, for an object to be in static equilibrium, all of the forces operating on it must equal zero. The two 300 N forces applied to the bolt cutters handles in this instance plus the force the bolt cutter itself applied to the bolt are the forces acting on the bolt. We'll designate this force F. This circumstance can be represented by the following equation.
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Using the position vector from B to C, calculate the moment about segment AB due to force F.A=(0 i+0 j+0 k) mB=(1.2 i+1.8 j+0 k) mC=(1.2 i+1.8 j+1.5 k) mF=(−205 i+85 j+155 k) m, which is a force applied at point C.
The capacity of a pressure to rotate an entity is known as the period of force, or torque. It varies depending on the amount of force used and how far the force is applied from the object's axis of rotation.
Describe a vector?A vector is a quantity or phenomenon with independent properties for both size and direction. The mathematical or mathematical representation of a quantity is another use of the term. Speed, momentum, force, electromagnetic fields, and weight are a few examples of vectors in nature.
Why is a vector called that?Latin gives the word vector the meaning of "a carrier." Astronomers originally used it to describe the movement of planets in the 18th century.
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9.
10.
11.
12.
A(n) _______ mixture will reduce engine power, foul spark plugs, and cause incomplete burning.
A. stoichiometric
B. overly rich
C. extra lean
D. symmetrical
results when an overheated surface in the combustion chamber ignites the air-fuel mixture
prematurely.
A. Detonation
B. Asymmetrical combustion.
C. Hollow combustion
D. Preignition
Abnormal engine combustion is being discussed. Technician A says to find the cause of spark knock or
preignition pinging in the engine, first check the ignition timing with a scan tool. Technician B says if the
check shows engine timing is correct, spark knock is the problem. Who is right?
A. A only.
B. B only.
C. Both A and B.
D. Neither A nor B.
True or False? Diesel fuel can produce more cylinder pressure and vehicle movement than an equal
amount of gasoline.I need a answer Chapter 40
Explanation:
jhdifbjx to just go to j to you too I love you soif the turn ratio of a step-down transformer is 15:1 and the series impedance (referred to the primary) of j50 ohm. if the no-load primary voltage is 345 kv (line-to-line), and the secondary side is serving a y-connected balance load of 0.667 j0.111 ohms, the real power absorbed by the load (per phase) would be :
if the turn ratio of a step-down transformer is 15:1 and the series impedance C= 3.157 ×10^-3 < -36.87° Ω~¹ D= Is/Ir Since Is=Ir
How do resistance and impedance differ?Voltage split by permeability in a resistor equals resistance. Voltage multiplied by current for just about any component is referred to as impedance. Instead of being referred to as impedance in the context of a resistor, the voltage to current ratio is called resistance.
Calculation
Frequency f=60Hz
Line impedance Z= 12.84 + j72.76 Ω
Then,
The resistance is R=12.84Ω
And reactance is X=72.76Ω
Z=√(12.84²+72.76²)
Z=73.88
Angle = arctan(X/R)
Angle = arctan(72.76/12.84)
Angle=80°
Then, Z=73.88 < 80° ohms
Load voltage is 132 kV
Load power P=55 MWA
Power factor =0.8lagging
the relation between the sending and receiving end specifications are given using ABCD parameters by the equations below.
Vs = AVr + BIr
Is = CVr + DIr
Where
Vs is sending Voltage
Vr is receiving Voltage
Is is sending current
Ir is receiving current
A is ratio of source voltage to received voltage A=Vs/Vr when Ir=0
B is short circuit resistance
B= Vs/Ir when Vr=0
C is ratio of source current to received voltage C=Is/Vr when Ir=0
D is ratio of source current to received current D=Is/Ir when Vr=0
Now,
The load at 55MVA at 132kV (line to line)
Therefore, load current is
Ir= P/V√3
Ir=55×10^6/(132×10^3×√3)
Ir=240.56 Amps
It has a power factor 0.8 lagging
PF=Cosθ
0.8=Cosθ
θ=arcCos(0.8)
θ=36.87°
Therefore, Ir=240.56 <-36.87°
Vr=V/√3
Vr=132/√3
Vr=76.21 kV. Phase voltage
Vr= 76210 < 0° V
For series impedance,
Using short line approximation
Vs = Vr + IrZ
Vs = 76210 < 0° + (240.56 <-36.87° × 73.88 < 80°)
Using calculator
Vs=76210<0° + 17772.5728<(-36.87°+80°)
Vs=76210<0° + 17772.5728<43.13°
Vs=89970.67<7.7°
Also
Is = Ir = 240.56 <-36.87° Amps
Therefore, the ABCD parameters is
A=Vs/Vr
A= 89970.67 <7.7° / 76210 <0°
A=1.181 <7.7-0
A=1.18 <7.7° no unit
B = Vs/Ir
B = 89970.67 < 7.7° / 240.56 <-36.87°
B = 347.01 < 7.7+36.87
B= 347.01 < 44.57° Ω
C= Is/Vr = 240.56 <-36.87° / 76210 < 0°
C= 0.003157 <-36.87-0
C= 3.157 ×10^-3 < -36.87° /Ω
C= 3.157 ×10^-3 < -36.87° Ω~¹
D= Is/Ir
Since Is=Ir
Then, D = 1 no unit.
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fill in the bllank.Texting while driving is dangerous and has cost too many lives. , text messaging makes a crash twenty-three times more likely to happen. , teens who text and drive spend ten percent of their driving time outside their lane. , seventy-seven percent of people still believe that they can safely text while driving.
Answer:
Texting while driving is dangerous and has cost too many lives. According to the National Highway Traffic Safety Administration, text messaging makes a crash twenty-three times more likely to happen. Additionally, studies have shown that teens who text and drive spend ten percent of their driving time outside their lane. Despite these risks, seventy-seven percent of people still believe that they can safely text while driving.
Explanation:
Answer:
Texting while driving is dangerous and has cost too many lives.
✔ For instance
, text messaging makes a crash twenty-three times more likely to happen.
✔ In addition
, teens who text and drive spend ten percent of their driving time outside their lane.
✔ Despite this
, seventy-seven percent of people still believe that they can safely text while driving.
PLS HELP!!! THIS IS URGENT!!!
In this worksheet, we will use the drag equations to calculate drag force. Assume the following:
1 liter bottle with radius = 40 mm.
The drag coefficient is 0.299 for the 150 mm long nose cone.
Velocity is 30 m/s
The frontal area is 0.005m² while the drag force is 0.807N and also, drag opposes forward motion
a) 0.005m²
b) 0.807N
c) drag opposes forward motion
What is Drag ForceDrag force, also known as air resistance, is a force that acts on an object when it moves through a fluid, such as air or water. Drag force opposes the motion of the object and acts in the opposite direction of the velocity of the object.
(1) The frontal area of the bottle can be calculated using the formula for the area of a circle, which is pi times the radius squared. So the area is:
A = pi * (40 mm / 1000 m/mm)^2 = 0.005 m^2
(2) The drag force can be calculated using the formula:
Fd = 1/2 * Cd * A * v^2 * ρ
where Fd is the drag force, Cd is the drag coefficient (0.299), A is the frontal area (0.00508 m^2), and v is the velocity (30 m/s). So the drag force is:
Fd = 1/2 * 0.299 * 0.00508 * (30 m/s)^2 * 1.2 = 0.807N
Note that the drag coefficient is for the nose cone and not for the whole bottle. Also, drag forces are usually given in Newtons (N). In this given question, we are not given the density of the fluid or type of fluid and that might affect the calculation.
(3)
Drag opposes forward motion.
Drag, also known as air resistance, is a force that acts in the opposite direction of the motion of an object moving through a fluid, such as a rocket moving through the air. The force is generated by the interactions between the object and the fluid, and it acts to slow down the object and make it more difficult for the object to maintain its speed. This is why drag is said to oppose forward motion.
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what polarity must be connected to the collector, base, and emitter of an npn to make it forward biased?
A positive voltage must be applied to the PNP's emitter, and a negative voltage must be connected to its collector. To forward bias the transistor, the base must be linked to the same polarity as the collector.
For the transistor to operate in the active state, the emitter base junction must be forward biassed and the collector base junction must be reversed biassed. Since the first junction is forwardly biassed, the bulk of the current flows through it and travels to the base, while the second junction needs to be reversely biassed in order to reach the collector. the junction that is forward-biased in an NPN transistor. Electrons leave the negative terminal of the battery and enter the N material as the emitter-to-base junction is biassed forward in the figure (emitter). When the transistor's base collector and emitter base junctions are both forward biassed, the area is said to be saturated.
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Cascade Connection of Two Integrating Amplifiers
Answer:
A Ethos
B Pathos
C Shift
D Understatement
D Overstatement
Energy band model a) For silicon, if Eg decreases by 0.078 eV, by what fraction does ni increase (assume T is constant at 300K)? b) If the temperature rises from 300K to 600K, by what additional fraction does n, increase (assume Eg is constant 1.068 eV, you do not need to worry about the decrease from problem a)? c) If we further increase the temperature, Si starts exhibiting semi-metal properties. Think ofa physical reason for this phenomenon.
Plotting the accessible energies for an electron in a material allows band theory to assist visualise the differences between a conductor, semiconductor, and an insulator.
Why is energy band important?It is essential for this course to understand how to read and sketch the energy band model, also known as the band diagram, which is used throughout the book to explain how electrons and holes respond to external factors like as light, heat, and/or voltage.
The knowledge amassed during the scientific quantum revolution contributed in certain ways to the development of band theory. Felix Bloch came up with the concept of using solids as examples for the quantum theory in 1928. Bands—extremely tightly spaced orbitals with minimally different energies—were discovered by Walter Heitler and Fritz London in 1927.
Plotting the accessible energies for an electron in a material allows band theory to assist visualise the differences between a conductor, semiconductor, and an insulator.
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which type of roofing material develops its design strength when it is placed into forms and then hardens at the building site?
Cast-in-place concrete is the type of roofing material develops its design strength when it is placed into forms and then hardens at the building site.
Roofing material is an outer layer on our roof that helps the building from rains and thunderstorms etc. There are many types of roofing materials on the market. You can choose any material of your choice like metal shingles, wood shingles and clay tiles etc. Cast-in-place concrete is poured onsite in the finished concrete position. This differs from precast concrete where the slabs are built somewhere else and when they get ready, they are shifted the site and assembled as needed.
Considering a more durable or modern roofing material is recommended. Appearance, durability, price of the roofing material, and structural issues should be considered to select the right type of roofing material.
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A bimetal fan/limit switch cycles the blower usingA. time on–time off.B. time on–temperature off.C. temperature on–time off.D. temperature on–temperature off.
The correct response is D. temperature on–temperature off. A bimetal fan/limit switch cycles the blower using temperature on–temperature off.
To express in numerical terms how hot or cold something is, the idea of temperature is used. Using a thermometer, one can gauge temperature. Different temperature scales, which historically relied on various reference points and thermometric materials for definition, are used to calibrate thermometers. The most popular scales are the Kelvin scale (K), which is mostly used for scientific reasons, the Fahrenheit scale (°F), and the Celsius scale, with the unit symbol °C (formerly known as centigrade). One of the International System of Units' seven base units is the kelvin (SI). The lowest temperature on the thermodynamic scale is absolute zero, or 0 kelvin, or 273.15 degrees Celsius. The third law of thermodynamics acknowledges that it can be experimentally approached extremely closely but never actually reached. At that temperature, it would be difficult to extract energy from a body in the form of heat. All branches of natural science, including physics, chemistry, Earth science, astronomy, biology, ecology, material science, metallurgy, mechanical engineering, and geography, as well as the majority of facets of daily living, depend on temperature.
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PLTW 1.3.4 Conclusion questions:
1) If you plan to pattern a feature, such as a square hole cut into a solid or a solid extrusion, is it more efficient to pattern the sketch before you extrude or to pattern the final feature after you extrude? Justify your answer.
2) Look around your classroom and think about items in your possession. List at least two objects that could not be modeled efficiently using a straight extrusion but would more efficiently be modeled using a Loft feature. How about objects that could be modeled using a tapered extrusion?
It is more efficient to pattern the sketch before you extrude. This is because when a sketch is patterned before it is extruded, the pattern is created based on the original sketch and the software automatically updates the final feature. If the pattern is applied after the extrusion, the software would have to pattern each individual feature, which would take more time and potentially lead to errors.
2. Two objects that could not be modeled efficiently using a straight extrusion but would more efficiently be modeled using a Loft feature are:
A vase with a tapered shape that widens at the top and narrows at the bottom.A lampshade with a curved shape that flares out at the bottom and narrows at the top.What is the object about?By patterning the sketch before extruding, the software can quickly and easily apply the pattern to the final feature.
Objects that could be modeled using a tapered extrusion are:
A bottle with a tapered shape that widens at the bottom and narrows at the top.A pencil with a tapered shape that widens at the top and narrows at the bottom.Therefore, In both cases, the tapered extrusion feature allows for easy creation of tapered shapes, which would be more difficult to model using other features such as straight extrusions or lofts.
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2-5-9 Two different fuels are being considered for a 1 MW (net output) heat engine which can operate between the highest temperature produced during the burning of the fuel and the atmospheric temperature of 300 K. Fuel A bums at 2500 K, delivering 50 MJ/kg (heating value) and costs $2 per kilogram. Fuel B burns at 1500 K, delivering 40 MJ/kg and costs $1.50 per kilogram. Determine the minimum fuel cost per hour for (a) fuel A and (b) fuel B.
At 2500 K, Fuel A is ineffective, producing 50 MJ/kg (heating value), and costing $2 per kilogram. Fuel B costs $1.50 per kilogram, burns at 1500 K, and produces 40 MJ/kg.
What does "heat engine" mean?A thermal engine is a machine that uses heat to generate power. It draws heat from a tank, uses that heat to produce work, such as move a piston or lift weights, and then releases that thermal energy into the drain.
What is the heat engine's operating principle?A temperature engine is a machine that generates work using thermal energy. A warm and a cold reservoir's respective temperature differences produce thermal energy. This distinction is used by the heat engine in a thermodynamic process.
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you approach a ravine with two i-beams. how do you know if you can cross (explain using equations, engineering concepts, etc.)?
To determine if you can safely cross a ravine with two I-beams, you will need to calculate the maximum allowable span of the I-beams. This can be done by first determining the dead load and live load on each beam, and then using a span-to-depth ratio to calculate the maximum allowable span.
The dead load is the weight of the beams themselves and any permanent loads that are attached to the beams, such as a deck or guardrail. The live load is the weight of any temporary loads, such as people or materials, that will be placed on the beams. Once the dead load and live load are known, the maximum allowable span can be calculated using a span-to-depth ratio.
This ratio is typically determined by the type of I-beam being used, the material of the beam, and the expected environmental conditions. For example, if the I-beam being used is made of steel and is expected to be subjected to wind loads, the span-to-depth ratio might be 6 to 1. This means that for every 6 feet of span, the beam must be at least 1 foot deep.
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Brittany has gotten approval to start working on creating the cloud infrastructure for a new application the company wants to begin using. Before she starts creating anything, which of the following might she want to reference.
Brittany has received authorization to begin working on developing the cloud infrastructure for a new application that the business wants to start using. SOP might want to reference it before she starts producing.
Hardware, abstracted resources, storage, and network resources are all included in the phrase "cloud infrastructure," which refers to the elements required for cloud computing. Imagine cloud infrastructure as the resources required to construct a cloud. Cloud infrastructure is required to host applications and services in the cloud.
Each component of the cloud infrastructure is integrated with the others to form a single architecture that supports business operations. Hardware, virtualization, storage, and networking components are frequently found in typical solutions.
Cloud infrastructure is a word that can be used to refer to both the individual technologies and the entire cloud computing system once all the components have been put together.
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Determine the value of resistor R4 in the given circuit.
Explanation:
which of the following statements about s orbitals in INCORRCT
Answer:
R4 is 1.5 ohm
Explanation:
.if there is no current flowing through R5, there must be no potential difference between a and b.
As such, the ratio of pitentual divider R1/R2 is equal to R4/R3.
Empty disposable R-134a refrigerant containers should be: a. disposed of according to SAE J2196. b. evacuated into a recovery/recycling machinec. flushed with R-152a refrigerantd. flushed with R-134a refrigerant.
Vacuum into a recovery/recycling machine, empty disposable R-134a refrigerant containers should be disposed of.
An area devoid of the matter is called a vacuum. The adjective vacuum, which means "empty" or "void," is the source of the word. A region with a gaseous pressure significantly below atmospheric pressure might be thought of as an approximate representation of such a vacuum. The term "partial vacuum" is used to describe an imperfect vacuum, such as one that might exist in a laboratory or in space, and is frequently used when physicists discuss the ideal test outcomes that would take place in a perfect vacuum, which they sometimes simply refer to as "vacuum" or free space. Contrarily, any area where the pressure is significantly lower than atmospheric pressure is referred to as a vacuum in engineering and applied physics. A space that envelops an object is referred to as being in vacuo in Latin.
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Explain how a motor tensioning tool is used.
A motor tensioning tool is a device used to adjust the tension of a motor's drive belt or chain.
This tool is used to ensure that the tension on the belt or chain is correct and within the specified range. Incorrect tension can cause the motor to vibrate excessively or cause the belt or chain to slip or break.
The tool is used to measure the tension on the belt or chain and make adjustments as necessary. The tool works by using a tension gauge and a set of adjustment screws or knobs that can be used to adjust the tension. After measuring the tension, the user can make adjustments to the tension using the adjustment screws or knobs until the desired tension is achieved.
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The classification of an area as being hazardous with regard to the installation of lighting fixtures is the responsibility of the insurance company, authority having jurisdiction, or
The correct answer is owner. The classification of an area as being hazardous with regard to the installation of lighting fixtures is the responsibility of the insurance company, authority having jurisdiction.
In the International System of Units, the lux (symbol: lx) is the unit of illuminance, or light flux per unit area (SI). In terms of lumens per square metre, it is one. This is used in photometry to quantify the amount of light that strikes or penetrates a surface as seen by the human eye. Calculating illumination determines how much light is produced overall by a source. Lumens per square metre, or lux, are used to measure this luminous flux.The entity, position, or person with legal authority to uphold a standard's standards is said to have jurisdiction. The majority of provinces and territories have selected an AHJ as the body in charge of ICS inside their territorial jurisdiction.
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For an economic region, summary of a data is given below.
Mean 535
Median 500
Mode 500
Standard Deviation 96
Minimum 220
Maximum 925
5th percentile 400
10th percentile 430
90th percentile 640
95th percentile 720
What can you conclude about the shape of a histogram of this data?
Answer:
Explanation:
Based on the summary of the data given, it can be concluded that the histogram of the data is likely to be right-skewed, or positively-skewed. This means that the majority of the data points will be concentrated to the left of the mean, with values gradually decreasing until the highest value of 925. The mean of 535 is greater than the median and mode of 500, indicating that there are a few values that are higher than the majority of the data points. The 5th percentile (400) and 10th percentile (430) are relatively close to the mode, indicating that the bulk of the data points are concentrated between 400 and 500. The 90th percentile (640) and 95th percentile (720) are relatively close to the maximum of 925, indicating that there are a few values that are much higher than the majority of the data points.
