Single phase AC-Motors

Which of the following is not recognized as part of a single-phase AC motor?

• Electrolytic Capacitor.

• Slip rings.

• Start windings.

• Start and Run windings.

The difference between the synchronous speed and actual motor (Rotor) speed is called ………..?

• A- Skew angle.

• A- Phase Shifting.

• A- Slip.

• A- Speed switch.

The centrifugal switch connects with ………...

• Run windings.

• Start windings.

• Both start and run windings.

• Capacitor unit.

To increase starting torque in some AC motors

• The rotor bars are angled

• the supplied current increase

• The Supplied Voltage decrease

• the stator windings segregate

The only section of wire that carry current in a direction ……………… to a magnetic field

• Parallel.

• Opposed.

• Perpendicular.

• All of the mentioned.

In Split phase induction motors, the centrifugal switch connected to…..?

• Run windings

• Start Windings

• Both start and run windings

• None of any windings

In which place the motor rotation be changed?

• Stator

• Terminal Box

• Rotor bars

• the shaft

The correct place must be used to lift and move the motors is……?

• The mounting hole

• The motor enclosure

• The eye bolt.

• The motor shaft

The centrifugal switch use to disconnect the start winding when the motor is rotating at about …………… of its full load speed

• 75%

• 80%

• 70%

• 73%

Which of the following motor type has higher starting torque than others?

• The capacitor-start motor

• The split-phase motor.

• The Capacitor start - Capacitor runs motors.

• The Shaded pole motors.