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Electrician Practice Test: AC Single Phase Motor
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Related: Electrician Practice Test: AC 3 Phase Motor

Electrician Practice Test: AC Single Phase Motor
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25 Questions

1. In case of a universal motor, torque pulsation is minimized?
2. Which of the following motors can be used for unity power factor?
3. In case of a reluctance motor, when the load is increased so that it cannot maintain synchronous speed the motor will?
4. What is the working principle of split phase motor?
5. Direction of rotation of a split phase motor can be reversed by reversing the connection of?
6. Why the hysteresis motor is suitable for sound recording instruments?
7. What is the working principle of single phase induction motor?
8. Which of the following motor will have relatively higher power factor?
9. What is the effect if the centrifugal switch is not disconnected after the motor starts?
10. What is the angular displacement between starting and running winding of a single phase induction motor?
11. The direction of rotation of hysteresis motor is reversed by?
12. If the capacitor of a single-phase motor is short-circuited?
13. In a capacitor start single-phase motor when capacitor is replaced by a resistance?
14. In a stepper motor the angular displacement?
15. Which motor is used in table fan?
16. A 1.8°step, 4-phase stepper motor has a total of 40 teeth on 8 pole of stator. The number of rotor teeth for their rotor will be?
17. A hysteresis motor?
18. In a capacitor start single-phase induction motor, the capacitor is connected?
19. Why a capacitor is connected across centrifugal switch in the centrifugal switch speed control method?
20. Which motor is preferred for domestic water pumps?
21. The speed of a universal motor is generally reduced by using?
22. A capacitor start single phase induction motor when capacitor is replaced by inductance?
23. In a hysteresis motor, the rotor must have?
24. The motor used for the compressors is?
25. In repulsion motor, maximum torque is developed when?

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