Question : Back emf is 120V when motor is turning at 1680 rev/min, and the back emf when motor rotates at 3360 rev/min will be
(A). 220V
(B). 240V
(C). 260V
(D). 280V
Back emf is 120V when motor is turning at 1680 rev/min, and the back emf when motor rotates at 3360 rev/min will be
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