Back EMF is 120 V when motor is turning at 1680 revs per min. back EMF when motor rotates at 3360 revs per min, will be

Back EMF is 120 V when motor is turning at 1680 revs per min. back EMF when motor rotates at 3360 revs per min, will be
  • A. 220 V
  • B. 240 V
  • C. 260 V
  • D. 280 V
  • Correct Answer: Option B
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