If n=rpm of the bull wheel=4 ,cs =cutting speed=3mm/minute and m= the ratio between return time to cutting time= 5. Then find the value of length of cutting stroke (l) in mm.

If n=rpm of the bull wheel=4 ,cs =cutting speed=3mm/minute and m= the

1.	If n=rpm of the bull wheel=4 ,cs =cutting speed=3mm/minute and m= the ratio between return time to cutting time= 5. Then find the value of length of cutting stroke (l) in mm.
A.	25
B.	50
C.	12.5
D.	6.24
Answer» D. 6.24

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If n=rpm of the bull wheel=4 ,cs =cutting speed=3mm/minute and m= the ratio between return time to cutting time= 5. Then find the value of length of cutting stroke (l) in mm.

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