A synchronous motor running with normal excitation adjusts to load increases essentially by increase in______________?

Related Mcqs:

The mechanical displacement of the rotor with respect to the stator, in polyphase multipolar synchronous motors running at full load, is of the order of_____________?

A. zero degree B. two degrees C. five degrees D. ten degrees...

If one-phase of a 3-phase synchronous motor is short-circuited, motor will ______________?

A. will refuse to start B. will overheat in spots C. will not come upto speed D. will fail to pull into step...

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...

When the stator windings are connected in such a fashion that the number of poles are made half, the speed of the rotor of a synchronous motor___________?

A. remains same as the original value B. decreases to half the original value C. tends to becomes zero D. increases to two times the original value...

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....