Star-delta starting of motors is not possible in case of____________?

Related Mcqs:

The shaft of an induction motor is made of_____________?

A. high speed steel B. stainless steel C. carbon steel D. cast iron...

Rotor rheostat control method of speed control is used for____________?

A. squirrel-cage induction motors only B. slip ring induction motors only C. both A. and (b) D. none of the above...

Size of a high speed motor as compared to low speed motor for the same H.P. will be__________?

A. bigger B. smaller C. same D. any of the above...

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...

Insertion of resistance in the rotor of an induction motor to develop a given torque?

A. decreases the rotor current B. increases the rotor current C. rotor current becomes zero D. rotor current rernains same...