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Between the breakdown point and standstill, the torque a machine develops varies roughly with

  • A.a constant value independent of the slip of the machine
  • B.the inverse of the slip
  • C.the slip itself
  • D.the square of the slip

Answer: B

With \( s^2X_2^2 \) dominating the denominator, the expression reduces to a term inversely proportional to slip, which is why the torque falls away between the peak and standstill. That falling region is the unstable part of the characteristic.

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