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Three Phase Induction Motors

Three Phase Induction Motors
The speed of a squirrel cage induction motor is changed by

Pole changing
None of the listed here
Cascade control
Rheostatic control

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Three Phase Induction Motors
In an induction motor, no load the slip is generally

4%
Less than 1%
2%
1.5 %

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Three Phase Induction Motors
In a squirrel cage induction motor, the number of rotor bars is generally ________

Prime number
Even number
None of the listed here
Equal to stator poles

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Three Phase Induction Motors
5 H.P., 50Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest?

2880 rpm
1000 rpm
1440 rpm
730 rpm

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Three Phase Induction Motors
The number of slip rings on a squirrel cage induction motor is usually

None
Two
One
Three

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Three Phase Induction Motors
3-phase wound rotor morors are also called _____ motors.

Synchronous
Commutator
Series
Slip ring

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MORE MCQ ON Three Phase Induction Motors

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