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Three Phase Induction Motors

Three Phase Induction Motors
When a 3-phase induction motor is at no load, the slip is ______

0.5
1
0.2
Practically zero

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Three Phase Induction Motors
The term cogging is associated with

Dc series motors
Compound generators
Induction motors
Three phase transformer

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Three Phase Induction Motors
The stator of a three phase induction motor produces _______ magnetic field.

None of the listed here
Alternating
Rotating
Steady

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Three Phase Induction Motors
For the same kVA rating, the leakage flux in induction motor is _______ that of transformer.

None of the listed here
More than
Less than
About the same

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Three Phase Induction Motors
Which of the following component is usually fabricated out of silicon steel?

Stator core
Bearings
Shaft
None of these

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Three Phase Induction Motors
In a 3 phase induction motor, the rotor speed is _____ the synchronous speed.

Equal to
Smaller than
Greater than
None of the listed here

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