Q
If a D.C. generator fails to build up the probable cause could not be_____________?
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A
A. Imperfect brush contact
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B
B. Field resistance less than the critical resistance
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C
C. No residual magnetism in the generator
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D
D. Faulty shunt connections tending to reduce the residual magnetism
Correct Answer:
B. B. Field resistance less than the critical resistance
