Discussion
Statement I: A crop's straw-to-grain ratio has no bearing on how heavily a thresher is loaded.
Statement II: The cylinder must handle all the material fed to it, not merely the grain.
In the light of the above statements, choose the correct answer.
Answer: B
Correct answer: Statement I is incorrect but Statement II is correct
Statement I is incorrect. The straw-to-grain ratio has a direct bearing on loading, because it determines how much total material must pass through the machine for a given grain output.
Statement II is correct and is precisely why. A crop with a ratio of 1.5 requires 2.5 tonnes of material to be handled for every tonne of grain; one with a ratio of 2.5 requires 3.5. The cylinder, walkers and shoe are all sized on total throughput, so the ratio effectively sets the machine's grain capacity.
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