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A triple –threaded screw is made 4 revolutions. What is the pitch of screw if the screw advances to 6 cm?

A triple –threaded screw is made 4 revolutions. What is the pitch of screw if the screw advances to 6 cm? Correct Answer 5 mm

The screw advances to 6 cm = 60 mm if 4 revolutions are made that is it will advances 60/4 = 15 mm if one revolution is made. 15 mm is the pitch of the helix. Given the screw is triple –threaded so pitch of the screw is 15/ 3 = 5 mm.

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