As the load is applied to a synchronous motor, the motor takes more armature current because

Synchronous Motors 03/07/2021

A. the increased load has to take more current
B. the rotor by shifting its phase backward causes motor to take more current
C. the back e.m.f. decreases causing an increase in motor current
D. the rotor strengthens the rotating field casuing more motor current

Related Mcqs:

    Slip-rings in a synchronous motor carry____________?
    A. direct current B. alternating current C. no current D. all of the above...
    The duration of sudden snort-circuit test on a synchronous motor is usually about_____________?
    A. one hour B. one minute C. one second D. none of the above...
    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...
    When load on an over-excited or under excited synchronous*motor is increased, rate of change of its armature current as compared with that of power factor is___________?
    A. more B. less C. equal D. twice...
    In a 3-phase synchronous motor, the negative phase sequence exists when the motor is_______________?
    A. supplied with unbalanced voltage B. under-loaded C. over-loaded D. none of the above...

Leave a Reply

Your email address will not be published. Required fields are marked *