Polyphase Induction Motors QUESTIONS AND ANSWERS

Electrical Engineering : Polyphase Induction Motors QUESTIONS AND ANSWERS :: part3 : 11 to 15

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

11.Which is of the following data is required to draw the circle diagram for an induction motor ?

Block rotor test only

No load test only

Block rotor test and no-load test

Block rotor test, no-load test and stator resistance test

12.In a three-phase induction motor

iron losses in stator will be negligible as compared to that in rotor

iron losses in motor will be neg�ligible as compared to that in rotor

iron losses in stator will be less than that in rotor

iron losses in stator will be more than that in rotor

13.Which type of bearing is provided in small induction motors to support the rotor shaft ?

Ball bearings

Cast iron bearings

Bush bearings

None of the above

14.A 3-phase slip ring motor has

double cage rotor

wound rotor

short-circuited rotor

any of the above

15.The circle diagram for an induction motor cannot be used to determine

efficiency

power factor

frequency

output

More Polyphase Induction Motors QUESTIONS AND ANSWERS available in next pages

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Electrical Engineering Questions And Answers :: Polyphase Induction Motors: part3

Polyphase Induction Motors QUESTIONS AND ANSWERS

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