An induction motor can run at synchronous speed when____________?

Polyphase Induction Motors 14/05/2021

A. it is run on load
B. it is run in reverse direction
C. it is run on voltage higher than the rated voltage
D. e.m.f. is injected in the rotor circuit

Related Mcqs:

    The crawling in the induction motor is caused by____________?
    A. low voltage supply B. high loads C. harmonics develped in the motor D. improper design of the machine E. none of the above...
    The ‘crawling” in an induction motor is caused by___________?
    A. high loads B. low voltage supply C. improper design of machine D. harmonics developed in the motor...
    The starting torque of a 3-phase squirrel cage induction motor is____________?
    A. twice the full load torque B. 1.5 times the full load torque C. equal to full load torque...
    What will happen if the relative speed between the rotating flux of stator and rotor of the induction motor is zero ?
    A. The slip of the motor will be 5% B. The rotor will not run C. The rotor will run at very high speed D. The torque produced will be very large...
    For driving high inertia loads best type of induction motor suggested is_____________?
    A. slip ring type B. squirrel cage type C. any of the above D. none of the above...

Leave a Reply

Your email address will not be published.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