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Three Phase Induction Motors

Three Phase Induction Motors
At no load the rotor core loss of a 3 phase induction motor is

Small
None of the listed here
Practically zero
Large

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

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

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Three Phase Induction Motors
The torque developed in the cage induction motor with auto-starter is

k2/torque with direct switching
K2 × torque with direct switching
K × torque with direct switching
k/torque with direct switching

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

0.4 %
0.04 %
14%
4 %

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Three Phase Induction Motors
When a 3-phase induction motor is at no load, the slip is ______

Practically zero
0.2
1
0.5

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

Two
Four
One
Three

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MORE MCQ ON Three Phase Induction Motors

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