The speed of the crankshaft is found to vary between 120 r.p.m. and 15 – McqOptions

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1.	The speed of the crankshaft is found to vary between 120 r.p.m. and 150 r.p.m. during one cycle of operation. What is the coefficient of fluctuation of speed?
A.	0.4
B.	0.31
C.	0.22
D.	0.13
Answer» D. 0.13

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