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Three Phase Induction Motors

Three Phase Induction Motors
In a double squirrel cage induction motor, the outer cage winding has _______

High inductance
Low resistance
High resistance
None of the listed here

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Three Phase Induction Motors
Reduced voltage starter can be used with

Slip ring motor only but not with squirrel cage induction motor
None of these
Squirrel cage as well as slip ring induction motor
Squirrel cage induction motor only but not with slip ring motor

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Three Phase Induction Motors
The shaft of induction motor is made of

Hollow
Any of the listed here
Flexible
Stiff

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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

Smaller
Same
Bigger
Any of the listed here

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Three Phase Induction Motors
In an induction motor the relationship between stator slots and rotor slots is that

None of the listed here
Stator slots are exact multiple of rotor slots
Stator slots are equal to rotor slots
Stator slots are not exact multiple of rotor slots

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Three Phase Induction Motors
In a squirrel cage rotor, the bars are not placed parallel to the shaft but are skewed to have ______

Greater mechanical strength
Uniform torque
Less rotor losses
None of the listed here

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