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Three Phase Induction Motors

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

Unity
0.5 leading
0.2 leading
0.2 lagging

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Three Phase Induction Motors
The rotor of an induction motor runs at

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

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Three Phase Induction Motors
The reactance of the rotor circuit of a 3-phase induction motor is maximum at

No load
Half full load
Starting
Full load

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

Alternating
Rotating
Steady
None of the listed here

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Three Phase Induction Motors
In an induction motor the relationship between stator slots and rotor slots is that

Stator slots are not exact multiple of rotor slots
None of the listed here
Stator slots are exact multiple of rotor slots
Stator slots are equal to rotor slots

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Three Phase Induction Motors
A 3 phase 440 v, 50 Hz induction motor has 4% slip. The frequency of rotor emf will be

200 Hz
2 Hz
50 Hz
20 Hz

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