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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

Two
None
One
Three

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

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

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Three Phase Induction Motors
The condition of induction motor at stand still resemble those of a transformer whose secondady is _______

Supplying a variable resistive load
Open circuited
Short circuited
None of the listed here

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Three Phase Induction Motors
In a squirrel cage induction motor, the number of rotor bars is generally ________

Prime number
Even number
Equal to stator poles
None of the listed here

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Three Phase Induction Motors
An induction motor is so called because its operation depends on

Mutual induction
Eddy currents
Self induction
Hysteresis

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Three Phase Induction Motors
Friction and windage loss of a 3 phase induction motor are

Remains the same at all loads
Minimum at no load
Maximum at no load
None of the listed here

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