The flywheel of a hand operated chaff cutter with two cutting knives is rotated

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The flywheel of a hand operated chaff cutter with two cutting knives is rotated at 30 rpm and is connected to a worm gear assembly for driving the feed rollers. The number of teeth of the worm gear is 24 and number of starts (threads) of the worm is 2. If diameter of each of the feed rollers is 15 cm, the chaff length in mm will be

Options:

A . 9.8

B . 12.8

C . 19.6

D . 39.2

Answer: Option C

-NA-

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