Electrical Engineering Questions And Answers :: Electrical Machine Design: part2



Electrical Engineering : Electrical Machine Design QUESTIONS AND ANSWERS :: part2 : 1 to 5

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

1.The resistivity of water should not be less than

10 Q m
100 Q m
1000 Q m
2000 Q m

2.Which of the following methods is most accurate ?

Equivalent current method
Equivalent power method
Equivalent torque method
Method of average losses

3.The slot leakage can be calculated by making which of the following assumptions ?

The current in the slot conductors is uniformly distributed over their cross-section
The leakage path is straight across the slot and around the iron at the bottom
The permanence of air paths is only considered. The reluctance of iron paths is assumed as zero
All of the above

4.The noise produced by a ______ cooled machine is less as the rotor moves in a medium of smaller density.

air
hydrogen
either (a) or (b)
none of the above

5.In self cooled motors the cooling time constant is about ______ than the heating time constant because cooling conditions are worse at standstill.

2 to 3 times greater
3 to 4 times greater
4 to 5 times greater
none of the above

More Electrical Machine Design QUESTIONS AND ANSWERS available in next pages

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