a) Does the slip increase as the load increases in an asynchronous motor? What is the reason of this? b) What does it mean for Slip 0, 1, -1 in asynchronous motor, how is it achieved? Explain.
Q: g) Explain the differences between shunt-winding and repulsion-start type universal motors.
A: According to the question we have to explain the differences between shunt-winding repulsion-start…
Q: a) Why do we use asynchronous word for asynchronous (induction) motors? b) How are the three-phase…
A: As per our guidelines we are supposed to answer only one question. Kindly repost other questions as…
Q: Question 1: Why did we perform the no-load operation experiment for the asynchronous motor? Question…
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A: Power Factor = Real Power/Apparent Power,or p.f. = W/VA.Then the cosine of the resulting angle…
Q: a. With the aid of a diagram explain the principle of operation of a three-phase asynchronous motor.…
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: a) Why do we use asynchronous word for asynchronous (induction) motors?
A: As per the honour code I will only attempt Q1. Kindly repost the other questions again. THANK YOU!!…
Q: true or false: Because synchronous motors are often made to have a leading power factor by…
A: The solution is given below
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A: Hhhff
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Q: 6-1. What are slip and slip speed in an induction motor? 6-2. How does an induction motor develop…
A: Disclaimer: Since you have asked multipart questions, we will solve the first three subpart for…
Q: Questions:- 1-why does the speed fall slightly when the d.c. shunt motor is loaded? 2- what is the…
A:
Q: Questions: 1 - why does the speed fall slightly when the d.c. shunt motor is loaded? 2- What is…
A: As per policy attempting only first question (1) (i) There are two different explanation for this…
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Q: Q.2 a) Why do we use asynchronous word for asynchronous (induction) motors? b) How are the…
A:
Q: electrical machines (How does an asynchronous motor behave when there is a load?) explain by…
A: Answer
Q: 3. For a three-phase asynchronous motor, its slip is s=0.03 at the rated condition, what is the…
A: As per guidelines given to us we can only provide the solution of first question in multiple type of…
Q: Explain the starting methods of asynchronous motors and explain the rationale of this method by…
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Q: b) Why the power factor of three-phase induction motor low at no-load and increase applied load…
A: In this question , we will write the reason of low power factor of induction motor at no load..
Q: Why the rotor conductors of the squirrel cage rotor are short-circuited and in the case of slip-ring…
A: Answer
Q: For what purpose is the short circuit test performed in asynchronous motor? Please explain.
A: Need to explain about short circuit test in asynchronous motor
Q: a) Does the slip increase as the load increases in an asynchronous motor? Explain what is the reason…
A: let Ns = synchronous speed N = Actual speed S = Slip
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A: This is belongs to synchronous motors
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A: Given: P1=4f1=50 Hz The number of poles, frequency and load torque is halved.
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A: We are authorized to answer one question at a time, since you have not mentioned which question you…
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A: In this we will write about V curve...
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Q: a. With the aid of a diagram explain the principle of operation of a threephase asynchronous motor.
A: Dear student as per our guidelines we are supposed to solve only one question.kindly repost other…
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Q: motor slip
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A: option : b (correct answer)
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A: Synchronous motor is constant speed motor .when ever load changes also speed constant
a) Does the slip increase as the load increases in an asynchronous motor? What is the reason of this?
b) What does it mean for Slip 0, 1, -1 in asynchronous motor, how is it achieved? Explain.
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Solved in 2 steps
- a) If the torque pulled from the shaft is doubled while the asynchronous motor is working in the linear operating zone, how does the slip and speed of the motor change? (Note: Torque value doubled is smaller than maximum Torque) b) What are the differences and advantages of squirrel cage and ring asynchronous motors compared to each other? c) What are the problems caused by stray inductances in asynchronous motors and transformers? d) What measures can be taken to reduce Eddy losses? e) How does the starting torque change if the supply voltage of the induction motor is doubled? f) If the induction motor reaches synchronous speed, what changes are observed in the operation of the induction motor? g) What is an advantage if the starting Torque of the induction motor is higher than the nominal load Torque? h) What are the main differences when the equivalent circuits of transformer and asynchronous motor are examined?a) If the torque pulled from the shaft is doubled while the asynchronous motor is working in the linear operating zone, how does the slip and speed of the motor change? (Note: Torque value doubled is smaller than maximum Torque) b) What are the differences and advantages of squirrel cage and ring asynchronous motors compared to each other? c) What are the problems caused by stray inductances in asynchronous motors and transformers?1-) a) Does the slip increase as the load increases in an asynchronous motor? Explain what is the reason for this. b) What does it mean when the slip is 0, 1, -1 in asynchronous motor, how is it achieved? Explain.
- f The simplicity in construction of a single-stack VR step motor is due to.... 1. Low number of phases, 2. Low used voltage, 3. N, N, 4. Bidirectional rotation, 5- None of previous. g- The synchronous inductor motor has the ability to step when the phase windings are .............. 1. Connected in parallel, 2. Connected in series, 3. Connected in star, 4. Energized with dc, 5- None of previous. h- The speed of multiple-stack VR step motor with continuous stepping is 3.120, 4.5 5- None of previous. 60f T T Resonance conditions distort the torque/speed curve causing a Drop, 3. Ripple, 4. Fluctuation, 5- None of previous. ********** 1. 120f 2p 2. 60f 2p " in torque. 1. Increase, 2. j- The frequency of armature current in 1-phase series motor is 1. =f, 2. f, 4. Zero, 5- None of previous. (f is the supply frequency)For a 3-phase, 4-pole, 50 Hz synchronous motor the frequency, no. of poles, and the load torque are all halved. Then what will be the motor speed?D-1). Which of the single-phase split-phase motors listed below has the smoother running torque? a) resistance-start induction-run b) capacitor-start induction -run c) capacitor-start capacitor-run d) they all have the same running torque D-2)Which of the single-phase split-phase motors listed below has the better power factor while running? a) resistance-start induction-run b) capacitor-start induction -run c) capacitor-start capacitor-run d) they are all the same power factor D-3). A potential relay is used to disconnect the starting capacitor from the circuit of a p it split-capacitor motor when it reaches approximately 75% of its rated speed. a) true b) false
- 51. When a synchronous motor is said to be ... A) over-excited, it is operating at a a) lagging power factor b) unity power factor c) leading power factor d) none of the above B) under-excited, it is operating at a a) lagging power factor b) unity power factor c) leading power factor d) none of the above C). What is a typical slip of a synchronous motor? a) 0% b) 2-5% c) 7-9% d) none of the above D). Selsyn motors can be used to a) provide position control b) provide angular feedback information c) both "a" and "b" d) neither "a" nor "b"F-a). Single-phase repulsion motors have......... . a) excellent starting torque b) excellent running torque c) unstable speed characteristics d) all of the above F-b). Which type of repulsion motor runs quieter? a) repulsion b) repulsion-start, induction-run c) repulsion-induction d) they are all the same F-c. Single-phase repulsion-induction motors have........ . a) high starting torque b) good speed regulation c) both "a" and "b" d) neither "a" nor "b"What is the relationship between slip s) and load (Pa) in an induction motor? Please explain.
- How double field is produced in single phase induction motor? Draw the torque-speedcharacteristics.c) Elaborate the statement that a synchronous machine is 'floating' on the bus bars d) What could cause voltage buildup in shunt dc generator on starting to fail to occur? Explain how can this problem be remedied? e) Why it is necessary to reduce the applied voltage as the electrical frequency is reduced in induction motors? f) Identify the objective of setting the turbine governor to regulate at 2-- 5 % of speed droop?We make( V/F) constant in speed control of three-phase induction motor in order to make motor torque constant? * True False