Power factor of a synchronous motor is unity when_____________?

Related Mcqs:

When V is the applied voltage, then the breakdown torque of a synchronous motor varies as_________?

A. V B. V312 C. V2 D. 1/V...

The induced e.m.f. in a synchronous motor working on leading power factor will be_____________?

A. more than the supply voltage B. less than the supply voltage C. equal to the supply voltage D. None of these...

The maximum speed variation in a 3-phase synchronous motor is____________?

A. 10 per cent B. 6 per cent C. 4 per cent D. 2. per cent E. zero...

When load on an over-excited or under excited synchronous*motor is increased, rate of change of its armature current as compared with that of power factor is___________?

A. more B. less C. equal D. twice...

In a synchronous motor, damper windings are provided on____________?

A. stator frame B. rotor shaft C. pole faces D. none of the above...