Direct Current Generator Or DC Generator Objective Questions and Answers
1. The armature of a DC generator is laminated to
A. Reduce the bulk
B. Provide the bulk
C. Insulate Thakur
D. Reduce the eddy current loss
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D. Reduce the eddy current loss
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2. The field coils of DC generator are usually made of
A. Mica
B. Copper
C. Cast iron
D. Carbon
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3. A DC generator may lose a residual magnetism due to
A. Heating
B. Vibrations
C. Over excitation
D.Any of the above
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4. In DC generators the residual magnetism is of the order of
A. 2.5%
B. 20%
C. 15%
D. 25%
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5. In DC generators the pole shoes are fastened to the pole core by
A. Rivets
B. Counter sunk screw
C.Brazing
D. Welding
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