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Three Phase Induction Motors

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

0
0.5
1
0.1

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

Shaft
Stator core
None of these
Bearings

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Three Phase Induction Motors
The frame of an induction motor is usually made of

Cast iron
Silicon steel
Aluminium
Bronze

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Three Phase Induction Motors
Size of a high speed motor as compared to low speed motor for the same HP will be

Any of the listed here
Bigger
Smaller
Same

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Three Phase Induction Motors
Slip rings are usually made of

Carbon
Copper
Phospor bronze
Aluminium

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Three Phase Induction Motors
The term cogging is associated with

Compound generators
Dc series motors
Induction motors
Three phase transformer

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