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Three Phase Induction Motors

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
In a double squirrel cage induction motor, the outer cage winding has _______

Low resistance
None of the listed here
High inductance
High resistance

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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
Smaller
Bigger
Any of the listed here

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

Four
One
Three
Two

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Three Phase Induction Motors
The full load slip of a 3-phase induction motor ranges from

20 to 30 %
None of the listed here
2 to 5 %
10 to 20 %

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Three Phase Induction Motors
An induction motor with 1000 r.p.m. speed will have

8 poles
4 poles
6 poles
2 poles

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