Facing of work piece of diameter 72mm is need to be done at spindle sp – McqOptions

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1.	Facing of work piece of diameter 72mm is need to be done at spindle speed of 80 rev per min at cross feed of 0.3mm/rev. The time required in minute for facing operation will be
A.	2
B.	1.5
C.	2.5
D.	3
Answer» C. 2.5

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