In a Whitworth quick return mechanism, distance between the fixed centres is 30mm and the length of the driving crank is 60 mm. The length of the slotted lever is 100 mm and the length of the connecting rod is 85 mm. Find the ratio of time of cutting stroke to time of return stroke.

In a Whitworth quick return mechanism, distance between the fixed cen

1.	In a Whitworth quick return mechanism, distance between the fixed centres is 30mm and the length of the driving crank is 60 mm. The length of the slotted lever is 100 mm and the length of the connecting rod is 85 mm. Find the ratio of time of cutting stroke to time of return stroke.
A.	1.5
B.	2.5
C.	2
D.	1
Answer» D. 1

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In a Whitworth quick return mechanism, distance between the fixed centres is 30mm and the length of the driving crank is 60 mm. The length of the slotted lever is 100 mm and the length of the connecting rod is 85 mm. Find the ratio of time of cutting stroke to time of return stroke.

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