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Breakaway torque is the torque needed to

  • A.bring a moving load to rest within a specified time
  • B.start a stationary load moving
  • C.accelerate the load through the whole of its speed range from rest
  • D.hold the load at a constant speed once it is already moving

Answer: B

Static friction exceeds the running value, so the initial torque demand can be well above the steady figure, particularly in a machine that has stood idle. Drives are checked against it as well as against the running load.

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