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Operation in the first quadrant, with both speed and torque positive, is

  • A.forward motoring
  • B.forward braking
  • C.reverse motoring
  • D.reverse braking

Answer: A

Correct answer: forward motoring

With speed and torque both positive the power is positive and flows from the machine to the load, so the drive is motoring in the forward direction. The four quadrants are read from those two signs: same sign is motoring, opposite signs mean the torque opposes the motion and the machine is braking.

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