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    Question

    Which of the following devices in a thresher is

    responsible for separating grains from straw?
    A Concave Correct Answer Incorrect Answer
    B Sieve Correct Answer Incorrect Answer
    C Fan Correct Answer Incorrect Answer
    D Beater Correct Answer Incorrect Answer
    E Elevator Correct Answer Incorrect Answer

    Solution

    The concave, in combination with the cylinder, performs the threshing action by rubbing the crop and separating the grain from the straw and chaff.

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