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Assertion (A): Capacity of a thresher is defined by the feed rate at which total loss reaches an accepted figure.

Reason (R): Losses climb steeply once the mat becomes too thick for the cylinder and walkers to handle.

Select the correct answer from the options below.

  • A.Both A and R are true, and R is the correct explanation of A
  • B.Both A and R are true, but R is not the correct explanation of A
  • C.A is true but R is false
  • D.A is false but R is true

Answer: A

Correct answer: Both A and R are true, and R is the correct explanation of A

Both statements are true and the reason is why capacity must be defined this way. A thresher does not stall at a definite feed rate; it will accept more crop almost indefinitely, delivering steadily less of the grain.

Losses climb steeply once the mat is too thick for the cylinder and walkers to work, so there is no natural limit to point to - only a chosen one. Capacity is therefore quoted as the feed rate at which total loss reaches an agreed figure, and a capacity claim without its loss figure means nothing.

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