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Flashing is used to __________

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Flashing is used to __________

(a) temporarily excited field from a battery source for large DC generator

(b) temporarily excited field from a battery source for small DC generator

(c) temporarily excited field from a battery source for large DC motor

(d) temporarily excited field from a battery source for large DC motor

I had been asked this question in semester exam.

This question is from Methods of Excitation topic in portion DC Machines of Electrical Machines

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Correct choice is (a) temporarily excited field from a battery source for large DC generator

Easy explanation: It is a method to give a kick start to dc machine when its residual magnetism is vanished.

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