A 3 phase 400V salient pole alternator is running at no-load. Suddenl – McqOptions

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1.	A 3 phase 400V salient pole alternator is running at no-load. Suddenly the excitation is removed then the net power in the machine is proportional to _____________
A.	sin 2d
B.	sin d
C.	cos 2d
D.	0
Answer» B. sin d

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