Electrical Engineering Questions And Answers :: Polyphase Induction Motors: part2

Electrical Engineering : Polyphase Induction Motors QUESTIONS AND ANSWERS :: part2 : 1 to 5

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2021 and IES 2021 examinations :

1.In an induction motor the relationship between stator slots and rotor slots is that

stator slots are equal to rotor slots
stator slots are exact multiple of rotor slots
stator slots are not exact multiple of rotor slots
none of the above

2.In the circle diagram for induction motor, the diameter of the circle represents

rotor current
running torque
line voltage

3.An induction motor is

self-starting with zero torque
self-starting with high torque
self-starting with low torque
non-self starting

4.Stepless speed control of induction motor is possible by which of the following methods ?

e.m.f. injection in rotor eueuit
Changing the number of poles
Cascade operation
None of the above

5.Size of a high speed motor as compared to low speed motorfor the same H.P. will be

any of the above

More Polyphase Induction Motors QUESTIONS AND ANSWERS available in next pages

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