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Blown grain loss in a thresher refers to grain that

  • A.Leaves with the chaff, the blast being too strong
  • B.Remains attached to the head
  • C.Is cracked by the cylinder
  • D.Falls through the concave

Answer: A

Setting the fan too fast carries sound grain out of the back with the light material, and the loss is invisible unless it is measured deliberately. It trades directly against sample cleanliness, which is why fan speed needs care.

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