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Three Phase Induction Motors

Three Phase Induction Motors
The starting torque of a squirrel cage induction motor is

Slightly more than full load torque
Negligible
Same as full load torque
Low

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Three Phase Induction Motors
The speed of a squirrel-cage induction motor can be controlled by all of the following except

Changing winding resistance
Reducing supply voltage
Changing supply frequency
Changing number of poles

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Three Phase Induction Motors
If the supply voltage of a 3-phase induction motor is increased two times, then torque is _______

Increased two times
Decreased four times
Increased four times
Decreased two times

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

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

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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 _____

2400 rpm
400 rpm
1600 rpm
1200 rpm

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Three Phase Induction Motors
In the circle diagram for induction motor, the diameter of the circle represents

Rotor current
Slip
Line voltage
Running torque

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MORE MCQ ON Three Phase Induction Motors

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