A dc shunt generator fails to build up at the rated speed due to
(A) loss of residual magnetism in the field. pole
(B) field circuit resistance is ‘higher than critical value
(C) Either (A) or (B).
(D) Both (A) & (B)
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Answer:
Right answer is (A) loss of residual magnetism in the field.
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A dc shunt generator fails to build up at the rated speed due to loss of residual magnetism in the field pole
Explanation:
- Natural current is the movement of an electric charge uni direction-ally. An electro chemical cell provides a prime example of DC electricity. Direct current can flow through a conductor like a thread, but it may also flow through semiconductors, insulators, or even a vacuum like in electron or ion beams.
- Test the necessary voltage build up parameters such as in DC shunt generator. Consider the resistance to field smaller than the resistance to the vital sector. Check if the DC generator speed is higher than the critical resistance. Check if the residual magnetism develops at the time of excitation or not.
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