When the field of a synchronous motor is under-excited, the power factor will be____________?

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...

Hunting in a synchronous motor cannot be due to___________?

A. windage friction B. variable load C. variable frequency D. variable supply voltage...

A synchronous motor can be used as a synchronous capacitor when it is____________?

A. under-loaded B. over-loaded C. under-excited D. over-excited...

The oscillations in a synchronous motor can be damped out by_______________?

A. maintaining constant excitation B. running the motor on leading power factors C. providing damper bars in the rotor pole faces D. oscillations cannot be damped...

If in a synchronous motor, driving a given mechanical load and drawing current at a leading power factor from constant voltage supply its field excitation is increased, its power factor

A. will become more B. will become less C. will remain unchanged D. none of the above....