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Three Phase Induction Motors

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

Same
Smaller
Bigger
Any of the listed here

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Three Phase Induction Motors
A four speed squirrel cage induction motor uses______ stator windings.

One
Three
Two
Four

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Three Phase Induction Motors
3-phase wound rotor morors are also called _____ motors.

Slip ring
Series
Synchronous
Commutator

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Three Phase Induction Motors
In a squirrel cage rotor, the bars are not placed parallel to the shaft but are skewed to have ______

Less rotor losses
Greater mechanical strength
None of the listed here
Uniform torque

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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 rotor of an induction motor runs at

Any of the above
Synchronous speed
Above synchronous speed
Below synchronous speed

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