The efficiency of a properly designed synchronous motor will usually fall in range___________?

Related Mcqs:

The standard full-load power factor ratings for synchronous motors are___________?

A. zero or 0.8 leading B. unity or 0.8 lagging C. unity or 0.8 leading D. unity or zero...

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...

In a synchronous motor, the magnitude of stator back e.m.f. & depends on_______________?

A. d.c. excitation only B. speed of the motor C. load on the motor D. both the speed and rotor flux...

Slip rings are usually made of__________?

A. carbon or graphite B. brass or steel C. silver or gold D. copper or aluminium...

If the synchronous motor, properly synchronised to the supply is running on no load and is having negligible loss then_____________?

A. the stator current will be zero B. the stator current will be very small C. the stator current will be very high D. the back e.m.f. will be more than the supply voltage E. none of the above...