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Three Phase Induction Motors

Three Phase Induction Motors
The induction motor has lagging power factor during

Starting only
None of the listed here
Both starting and operation
Operation only

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Three Phase Induction Motors
Friction and windage loss of a 3 phase induction motor are

Maximum at no load
Remains the same at all loads
None of the listed here
Minimum at no load

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Three Phase Induction Motors
An induction motor with 1000 r.p.m. speed will have

2 poles
6 poles
8 poles
4 poles

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Three Phase Induction Motors
When the rotor of a 3-phase induction motor is blocked, the slip is _____

0
0.1
1
0.5

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Three Phase Induction Motors
The torque developed by a 3 phase induction motor least depends on

Rotor emf
Rotor power factor
Shaft diameter
Rotor current

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Three Phase Induction Motors
The speed of a squirrel cage induction motor is changed by

Pole changing
None of the listed here
Cascade control
Rheostatic control

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MORE MCQ ON Three Phase Induction Motors

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