Slip of an induction motor is negative when_____________?

Related Mcqs:

In squirrel cage induction motors, the rotor slots are usually given slight skew in order to__________?

A. reduce windage losses B. reduce eddy currents C. reduce accumulation of dirt and dust D. reduce magnetic hum...

The auto-starters (using three auto transformers) can be used to start cage induction motor of the following type__________?

A. star connected only B. delta connected only C. A. and B. both D. none of the above...

It is advisable to avoid line starting of induction motor and use starter because____________?

A. it will run in reverse direction B. it will pick up very high speed and may go out of step C. motor takes five to seven times its full load current D. starting torque is very high...

A 500 kW, 3-phase, 440 volts, 50 Hz, A.C. induction motor has a speed of 960 r.p.m. on full load. The machine has 6 poles. The slip of the machine will be__________?

A. 0.01 B. 0.02 C. 0.03 D. 0.04...

Reduced voltage starter can be used with_____________?

A. slip ring motor only but not with squirrel cage induction motor B. squirrel cage induction motor only but not with slip ring motor C. squirrel cage as well as slip ring induction motor D. none of the above...