25) Which type of single phase motor is used for hard disk drives?

Stepper motor

Repulsion motor

Hysteresis motor

Reluctance motor

Answer is:

Stepper motor

Disconnect the running winding after reached 75% to 80% speed

Disconnect the starting winding after reached 75% to 80% speed

Disconnect the starting capacitor after reached 75% to 80% speed

Disconnect the starting and running winding after reached 75% to 80% speed

Answer is:

Universal motor

Reluctance motor

Repulsion start induction run motor

Capacitor start induction run motor

Answer is:

In series with starting winding

In series with running winding

In parallel with starting winding

In parallel with running winding

Answer is:

Universal motor

Shaded pole motor

Eddy current motor

Permanent capacitor motor

Answer is: