Name the principal components of an in-duction motor.Explain how a revolving field is set up in a3-phase induction motor.

Answered: Name the principal components of an in-…

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter35: Harmonics 916

Section: Chapter Questions

Problem 3RQ: Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction...

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Similar questions

Name three factors that determine the torque produced by an induction motor.
What is a single - phase induction motor? How does a single- phase induction motor work? How do you test a single phase motor? Which capacitor is used in single phase motor? What are the advantages of single phase induction motor? What are the applications of single phase induction motor? How does an induction motor start? What are the differences between single and three phase I.M ? What are the types of induction motor? What is the difference between induction motor and normal motor? Why three-phase induction motor self start while single phase motor does not self start?
The supply frequency to the stator of an 8-pole induction motor is 70 Hz, and the rotor frequency is 6 Hz. Determine the slip and the rotor speed.
Examine the saddle torque of induction motors and the effect of different groove structures on the saddle torque.
3.An induction motor has a rotor resistance and reactance at standstill of 0.1 ohm and 3.5 ohm respectively. At standstill the voltage induced to the rotor is 60volts per phase. If the slip is 5%, determine the rotor current
Differentiate between the AC and DC magnetic fields applied to an induction motor stator.
Q3 A 50 Hz split-phase induction motor has a resistance of 50 and an inductive reactance of 200 in the main winding as well as starting winding. Determine the value of resistance and capacitance to be added in series with the starting winding to send the same current in each winding with a phase difference of 90°. Ans[ 14.99 Ω, 127.5μF]
What are the active components of three-phase Induction Motor? b) Derive an expression for the frequency in the rotor circuit of three-phase IM? c) Draw with details the approximate per phase equivalent circuit of three-phase IM? d) Why the iron loss in rotor of an induction motor is negligible?
T-a. The direction of rotation of a single-phase split-phase motor can be change by........ a) reversing the connection of the start winding b) reversing the connection of the run winding c) reversing the connection of the start and run winding at the same time d) "a" or "b", not "c" T-b. Single-phase split-phase motors using an electrolytic capacitor in the start winding circuit should not be cycled more than about__________ time per hour. a) 8 b) 12 c) 24 d) none of the above T-c. When replacing the capacitor in a capacitor-start induction-run motor, one must be sure to replace the bad capacitor with__________ . a) a smaller one b) one of the same size c) a larger one d) none of the above
List two practical disadvantages of dc motors compared to single-phase ac induction motors for supplying power to a ventilation fan in a home or small business.
Would a positive-rotating harmonic or a your answer. negative-rotating harmonic be more harmful to an induction motor? Explain
a. Explain how a rotating magnetic field is produced in a three-phase induction motor. b. Explain the rotor action on a three-phase squirrel cage motor when the load increases from NO-LOAD to rated FULL- LOAD

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Name the principal components of an in- duction motor. Explain how a revolving field is set up in a 3-phase induction motor.