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Three Phase Induction Motors

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

One
Three
Four
Two

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

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Three Phase Induction Motors
The no load speed of an induction motor depends on

The maximum flux/poles
The number of its poles
The supply frequency
Both supply frequency and number of poles

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Three Phase Induction Motors
The maximum torque in an induction motor depends on

Rotor inductive reactance
Frequency
All of the listed here
Square of supply voltage

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Three Phase Induction Motors
If a 3-phase induction motor is running at slip S, then rotor copper loss is equal to

None of the listed here
(1-S) × rotor input
S × rotor input
(1+S) × rotor input

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

Same
Any of the listed here
Smaller
Bigger

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MORE MCQ ON Three Phase Induction Motors

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