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THREE PHASE INDUCTION MOTORS

Three Phase Induction Motors
For the same kVA rating, the leakage flux in induction motor is _______ that of transformer.

About the same
None of the listed here
More than
Less than

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Three Phase Induction Motors
A wound rotor motor is mainly used in applications where ______

Speed control is required
High rotor resistance is required during running
Less costly motor is not required
High starting torque is required

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

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

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Three Phase Induction Motors
The rotor winding of a 3phase wound rotor induction motor is generally _______ connected.

Delta
None of the listed here
Star
Partly star and partly delta

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

Slip ring
Commutator
Series
Synchronous

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