The maximum speed variation in a 3-phase synchronous motor is____________?

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...

In a synchronous motor, the maximum power developed depends on all of the following except:

A. rotor excitation B. maximum value of coupling angle C. direction of rotation D. supply voltage...

A synchronous motor can be made self starting by providing?

A. damper winding on rotor poles B. damper winding on stator C. damper winding on stator as well as rotor poles D. none of the above...

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...