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Electrician Set-1
Polyphase Induction Motors
66

Polyphase Induction Motors MCQ - Electrician (Set-1) with Answers

66) Which one of the following 3-phase motors is NOT self starting ?

Synchronous motor

Squirrel cage induction motor

Wound rotor motor

Double cage motor

Answer is:

Synchronous motor

Polyphase Induction Motors MCQ - Electrician (Set-1) with Answers

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Related Polyphase Induction Motors MCQ - Electrician (Set-1) with Answers

67) The motor suitable for loads where constant speed is required is

induction motor

synchronous motor

capacitor motor

universal motor

Answer is:

induction motor

68) The magnetic field produced in the stator of a three phase induction motor travels at

rotating speed

asynchronous speed

synchronous speed

slip speed

Answer is:

synchronous speed

69) For a small capacity induction motor, the type of starter used is

star delta starter

DOL starter

Auto transformer starter

Rotor resistance starter

Answer is:

DOL starter

70) In a 3-phase induction motor started by a DOL starter the short circuit current is protected by

overload relay

no volt coil

back-up fuses

protective earth conductor

Answer is:

back-up fuses

Polyphase Induction Motors MCQ - Electrician (Set-1) with Answers

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