Electrical Engineering : Polyphase 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.In the squirrel-cage induction motor the rotor slots are usually given slight skew |
| to reduce the magnetic hum and locking tendency of the rotor |
| to increase the tensile strength of the rotor bars |
| to ensure easy fabrication |
| none of the above |
22.A change of 4% of supply voltage to an induction motor will produce a change of appromimately |
| 4% in the rotor torque |
| 8% in the rotor torque |
| 12% in the rotor torque |
| 16% in the rotor torque |
More Polyphase Induction Motors QUESTIONS AND ANSWERS available in next pages
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