A synchronous motor will always stop when:______________?

Related Mcqs:

. In a synchronous motor which loss varies with load ?

A. Windage loss B. Bearing friction loss C. Copper loss D. Core loss...

Which of the following resistances can be measured by conducting insulation resistance test on a synchronous motor ?

A. Phase to phase winding resistance B. Stator winding to earthed frame C. Rotor winding to earthed shaft D. All of the above...

The armature current of the synchronous motor has higher values for_____________?

A. high excitation only B. low excitation only C. both A. and (b) D. none of the above...

Synchronous motors are_____________?

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

If the field of a synchronous motor is underexcited, the power factor will be_____________?

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