By | June 11, 2020
Created by Surendra

3 Phase Induction Quiz in English Set 1

All Important Question Answers for Electrician Related Exams

1 / 20

A double squirrel-cage induction motor has

2 / 20

The injected e.m.f. in the rotor of induction motor must have

3 / 20

The frame of an induction motor is usually made of

4 / 20

For which motor the speed can be controlled from rotor side ?

5 / 20

In case of the induction motors the torque is

6 / 20

The maximum torque in an induction motor depends on

7 / 20

Which of the following methods is easily applicable to control the speed of the squirrel-cage induction motor ?

8 / 20

The speed of a squirrel-cage induction motor can be controlled by all of the following except

9 / 20

A 3-phase induction motor stator delta connected is carrying full load and one of its fuses blows out. Then the motor

10 / 20

The crawling in the induction motor is caused by

11 / 20

When the equivalent circuit diagram of doouble squirrel-cage induction motor is constructed the two cages can be considered

12 / 20

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

13 / 20

DOL starting of induction motors is usually restricted to

14 / 20

Which of the following component is usually fabricated out of silicon steel ?

15 / 20

The shaft of an induction motor is made of

16 / 20

The auto-starters (using three auto transformers) can be used to start cage induction motor of the following type

17 / 20

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

18 / 20

In medium sized induction motors the slip is generally around

19 / 20

The shaft of an induction motor is made of

20 / 20

In the circle diagram for induction motor the diameter of the circle represents

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