Electrical Engineering : Single Phase Induction Motors QUESTIONS AND ANSWERS :: part3 : 21 to 25
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.The purpose of stator winding in the compensated repulsion motor is to |
| provide mechanical balance |
| improve power factor and provide better speed regulation |
| prevent hunting in the motor |
| eliminate armature reaction |
22.The rotor slots, in an induction motor, are usually not quite parallel to the shaft because it |
| improves the efficiency |
| helps the rotor teeth to remain under the stator teeth |
| helps in reducing the tendency of the rotor teeth to remain under the stator teeth |
| improves the power factor |
23.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 |
24.Which of the following applications always have some load whenever switched on ? |
| Vacuum cleaners |
| Fan motors |
| Pistol drills |
| All of the above |
More Single Phase Induction Motors QUESTIONS AND ANSWERS available in next pages
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