A separately excited dc motor is run from a dc source through a choppe – McqOptions

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1.	A separately excited dc motor is run from a dc source through a chopper. At 600 rpm and rated torque, the duty cycle of chopper is 0.8. At 600 rpm and half the rated torque, the duty cycle is likely to be
A.	0.9
B.	0.8
C.	0.75
D.	0.6
Answer» D. 0.6

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