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  1. calculations on gear and screw jack.

    1. An engine running at 150rpm drives a line shaft by means of a belt and driving/driven pulleys of 750/450mm in diameter. If the shaft drives a dynamo via another belt with driving/driven pulleys 900/150mmin diameter, determine the dynamo shaft. Assume belt thickness of 5mm and a shaft of 2% at each drive.

    2. A chain drive is used for reduction of speed from 240rpm to 120rpm. If the number of teeth of the driving sprocket is 20. The pitch circle diameter of the driven sprocket ...
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