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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.

high resistance
High reactance
Large slip
Low resistance

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Three Phase Induction Motors
Less maintenance troubles are experienced in terms of

Squirrel cage induction motor
None of the listed here
Slip ring induction motor
Both squirrel cage and slip ring

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Three Phase Induction Motors
Less maintenance troubles are experienced in case of

Both (A) and (B)
None of these
Squirrel cage induction motor
Slip ring induction motor

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

Shaft
Stator core
Bearings
None of these

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Three Phase Induction Motors
The starting torque of a squirrel cage induction motor is

Low
Same as full load torque
Slightly more than full load torque
Negligible

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Three Phase Induction Motors
The shape of the torque/slip curve of induction motor is

Hyperbola
Rectangular parabola
Parabola
Straight line

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