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In a single point turning operation with cemented carbide tool and steel work piece, it is found that the Taylor's exponent is 0.25. If the cutting speed is reduced by 50% then the tool life changes by _______ times.
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- 6
- 2
- 10
- 16
Correct Option: D
V2 = 0.5V1,
| = | = | = 2 | |||
| V2 | 0.5V1 | 0.5 |
V1Tn1 = V2Tn2
| = |  |  | n | ||
| T1 | V2 |
| = | | | 1/n | = | | | 1/0.5 | = | | | 4 | ||||
| T1 | V2 | V2 | V2 |
= (2)4 = 16
