The mechanical displacement of the rotor with respect to the stator, in polyphase multipolar synchronous motors running at full load, is of the order of_____________?

Related Mcqs:

A three-phase synchronous motor will have_____________?

A. no slip-rings B. one slip-ring C. two slip-rings D. three slip-rings...

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...

A synchronous motor is running with normal excitation. When the load is increased, the armature current drawn by it increases because

A. speed of the motor is reduced B. power factor is decreased C. Eb (back e.m.f.) becomes less than V (applied voltage) D. Er (net resultant voltage) in armature is increased E. none of the above...