SINGLE PHASE MOTOR-3
Single Phase Motor Quiz
Test your knowledge about single phase motors with our engaging quiz! This quiz covers important aspects of motor specifications, fun
- Multiple choice format
- Focus on single phase motor characteristics
- Ideal for students and electrical enthusiasts
21. The wattage rating for a ceiling fan motor will be in the range ___________
200 to 250 W
250 to 500 W
50 to 150 W
10 to 20 W
22. The wattage of motor for driving domestic sewing machine will be around _________
100 to 150 W
40 to 75 W
10 to 30 W
5 to 10 W
23. Which of the following single-phase motors has relatively poor starting torque?
Universal motor
Repulsion motor
Capacitor motor
All single phase motors have zero starting torque
24. When a D.C. Series motor is connected to A.C. supply, the power factor will be low because of ____________
High inductance of field and armature circuits
Induced current in rotor due to variations of flux
Fine copper wire winding
None of the above
25. The direction of rotation of universal motor can be reversed the by reversing the flow of current through ___________
Armature winding only
Field winding only
Either armature winding or field winding
None of the above
26. The electric motor used in portable drills is ______________
Capacitor run motor
Hysteresis motor
Universal motor
Repulsion motor
27. The speed control of universal motor used for sewing machines is by __________
Friction
Varying resistance
Tapping the field
Centrifugal mechanism
28. In split phase motor main winding is of ___________
Thin wire placed at the top of the slots
Thin wire placed at the bottom of the slots
Thick wire placed at the bottom of the slots
Thick wire placed at the top of the slots
29. If the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in __________
Damage to the starting winding
Damage to the centrifugal switch
Overloading of running winding
None of the above
30. The shaded pole motor is used for ____________
High starting torque
Low starting torque
Medium starting torque
Very high starting torque
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