1000+ Synchronous Motor Objective Questions & Answers - 2

Question: 6

In which of the following motors the stator and rotor fields rotate simultaneously?

(A) synchronous motor

(B) universal motor

(C) reluctance motor

(D) dc motor

Ans: A

synchronous motor

Question: 7

A synchronous motor can be used as a synchronous capacitor when it is

(A) over excited

(B) under excited

(C) over loaded

(D) under loaded

Ans: A

over excited

Question: 8

The ratio of starting torque to running torque in a synchronous motor is

(A) infinity

(B) zero

(C) one

(D) two

Ans: B

zero

Question: 9

The starting torque of a squirrel cage induction motor is

(A) slightly more than full load torque

(B) same as full load torque

(C) negligible

(D) low

Ans: D

low

Question: 10

A three phase synchronous motor will have

(A) one slip ring

(B) two slip rings

(C) three slip rings

(D) no slip rings

Ans: B

two slip rings

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