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DC Motors - Interview Questions and Answers

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21. A direct on line starter is used: for starting motors
A. iip to 5 H.P.
B. up to 10 H.P.
C. up to 15 H.P.
D. up to 20 H.P.
Explanation: ANSWER : : iip to 5 H.P. Explanation :
22. By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor?
A. Frame
B. Shaft
C. Commutator
D. Stator
Explanation: ANSWER : : Commutator Explanation :
23. These days D.C. motors are widely used in
A. pumping sets
B. air compressors
C. electric traction
D. machine shops
Explanation: ANSWER : : electric traction Explanation :
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