Under certain cutting conditions, doubling the cutting speed reduces the tool life to (1/16)th of the original. Taylor's tool life index(n) for this tool- work piece combination will be ________.

Under certain cutting conditions, doubling the cutting speed reduces t

1.	Under certain cutting conditions, doubling the cutting speed reduces the tool life to (1/16)th of the original. Taylor's tool life index(n) for this tool- work piece combination will be ________.
A.	0.25
B.	0.29
C.	0.27
D.	0.35
Answer» B. 0.29

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Under certain cutting conditions, doubling the cutting speed reduces the tool life to (1/16)th of the original. Taylor's tool life index(n) for this tool- work piece combination will be ________.

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