Electrical Engineering : Polyphase Induction Motors QUESTIONS AND ANSWERS :: part1 : 6 to 10
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.An induction motor with 1000 r.p.m. speed will have |
| 8 poles |
| 6 poles |
| 4 poles |
| 2 poles |
7.In case of the induction motors the torque is |
| inversely proportional to (Vslip) |
| directly proportional to (slip)2 |
| inversely proportional to slip |
| directly proportional to slip |
8.The term 'cogging' is associated with |
| three phase transformers |
| compound generators |
| D.C. series motors |
| induction motors |
9.Star-delta starting of motors is not possible in case of |
| single phase motors |
| variable speed motors |
| low horse power motors |
| high speed motors |
10.Slip rings are usually made of |
| copper |
| carbon |
| phospor bronze |
| aluminium |
More Polyphase Induction Motors QUESTIONS AND ANSWERS available in next pages
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