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Three Phase Induction Motors

Three Phase Induction Motors
The 3- phase induction motor is so designed that the rotor should have ______ under running conditions.

Low resistance
Large slip
high resistance
High reactance

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

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

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

None of the listed here
Steady
Alternating
Rotating

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

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

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

None of these
Stator core
Bearings
Shaft

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