Centrifugal switch disconnects the auxiliary winding of the motor at about ______ percent of synchronous speed?

Related Mcqs:

In capacitor start single-phase motors____________?

A. current in the starting winding leads the voltage B. current in the starting winding lags the voltage C. current in the starting winding is in phase with voltage in running winding D. none of the above...

A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will______________?

A. start and then stop B. start and run slowly C. start and run at rated speed D. not start at all...

For which of the applications a reluctance motor is preferred ?

A. Electric shavers B. Refrigerators C. Signalling and timing devices D. Lifts and hoists...

When a D.C. series motor is connected to A.C. supply, the power factor will be low because of____________?

A. high inductance of field and armature circuits B. induced current in rotor due to variations of flux C. fine copper wire winding D. none of the above...

Most of the fractional horsepower motors have either___________?

A. hard and annealed bearings B. ball or roller bearings C. soft and porous bearings D. plain or sleeve bearings...