Synchronous motor always runs at______________?

Related Mcqs:

In case one phase of a three-phase synchronous motor is short-circuited the motor will____________?

A. not start B. run at 2/3 of synchronous speed C. run with excessive vibrations D. take less than the rated load...

The angle between the rotating stator flux and rotor poles is called _________ angle.

A. synchronizing B. obtuse C. torque D. power factor...

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...

Synchronous motors are_____________?

A. not-self starting B. self-starting C. essentially self-starting D. none of the above...

For power factor correction, synchronous motors operate at____________?

A. no-load and greatly over-excited fields B. no-load and under-excited fields C. normal load with minimum excitation D. normal load with zero excitation...