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Three Phase Induction Motors

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

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

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Three Phase Induction Motors
The power factor of an induction motor under no load conditions will be closer to

0.5 leading
0.2 lagging
0.2 leading
Unity

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

Four
Two
One
Three

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

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

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Three Phase Induction Motors
The synchronous speed of a 3-phase induction motor having 20 poles and connected to a 50 Hz source is _____

1000 rpm
1200 rpm
300 rpm
600 rpm

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Three Phase Induction Motors
The air gap between stator and rotor of 3-phase induction motor ranges from ______

2 cm to 4 cm
4 cm to 6 cm
1 cm to 2 cm
0.4 mm to 4 mm

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