Three Phase Induction Motors
An induction motor is preferred to a dc motor because it _______

None of the listed here
Provides fine speed control
Provides high starting torque
Has simple and rugged construction

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Three Phase Induction Motors
As load on an induction motor goes on increasing

Its power factor remains constant
Its power factor goes on decreasing
Its power factor goes on increasing up to full load and then it falls again
Its power factor goes on increasing even after full load

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