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Three Phase Induction Motors

Three Phase Induction Motors
The magnetising current drawn by a 3 phase induction motor is about _______ of full load stator current.

15 to 20 %
5%
30 to 50%
10 to 15%

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Three Phase Induction Motors
An induction motor is

Self starting with zero torque
Self starting with high torque
Non self starting
Self starting with low torque

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

4 %
14%
0.04 %
0.4 %

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

1.5 %
Less than 1%
2%
4%

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Three Phase Induction Motors
Which of the following component is usually fabricated out of silicon steel?

Stator core
None of these
Bearings
Shaft

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

Steady
None of the listed here
Alternating
Rotating

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