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Three Phase Induction Motors

Three Phase Induction Motors
In medium sized induction motor, the slip is generally around

4 %
0.04 %
14%
0.4 %

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

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

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Three Phase Induction Motors
One of the speeds of a 2 speed squirrel cage induction motor is 800 rpm. The other speed will be _____

1200 rpm
2400 rpm
1600 rpm
400 rpm

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Three Phase Induction Motors
The rotor of induction motor

Always revolves in the direction of stator flux
Insufficient data
Always revolves in the direction opposite to stator flux
None of the listed here

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Three Phase Induction Motors
If any two phases for an induction motor are interchanged

The motor will run in reverse direction
The motor will burn
The motor will run at reduced speed
The motor will not run

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Three Phase Induction Motors
If an induction motor is running at slip S, then rotor output is ______

S × rotor input
(1+S) × rotor input
(1-S) × rotor input
(S-1) × rotor input

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