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A thresher operating for \( 6.5 \) hours threshes \( 5.2 \) tonnes of grain. Its output capacity is

  • A.33.8 t/h
  • B.0.13 t/h
  • C.0.80 t/h
  • D.1.25 t/h

Answer: C

Correct answer: 0.80 t/h

Divide the output by the time taken:

\[ \frac{5.2}{6.5} = 0.80\ \mathrm{t/h} \]

This is the effective capacity over the whole period, which includes any time lost to blockages, refuelling and waiting for crop. It is the figure that matters for planning a day's work, and it is always lower than the machine's rated throughput measured while it is actually running.

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