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Threshing efficiency is defined as

  • A.The proportion of grain that is undamaged
  • B.The throughput divided by the power consumed
  • C.The proportion of total grain that is detached from the plant
  • D.The proportion of grain that leaves the machine clean

Answer: C

It measures only detachment, and grain still attached to the head at discharge counts as unthreshed loss. Cleaning efficiency and breakage are separate measures, and a machine can score well on one and badly on another.

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