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Three Phase Induction Motors

Three Phase Induction Motors
The number of slip rings on a squirrel cage induction motor is usually

Three
Two
One
None

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Three Phase Induction Motors
The rotor of an induction motor runs at

Synchronous speed
Below synchronous speed
Above synchronous speed
Any of the above

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Three Phase Induction Motors
If any two phases for an induction motor are interchanged

The motor will run in reverse direction
The motor will not run
The motor will burn
The motor will run at reduced speed

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

Any of the listed here
Hollow
Flexible
Stiff

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Three Phase Induction Motors
One of the speeds of a 2 speed squirrel cage induction motor is 800 rpm. The other speed will be _____

2400 rpm
400 rpm
1600 rpm
1200 rpm

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

Commutator
Synchronous
Series
Slip ring

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