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Manufacturing Engineering
Machining Processes
GATE 2018
Medium

Using the Taylor's tool life equation with exponent n=0.5, if the cutting speed is reduced by 50%, the ratio of new tool life to original tool life is

  • 4
  • B2
  • C1
  • D0.5

Explanation

V·Tⁿ = C. With V2=0.5V1: T2/T1 = (V1/V2)^(1/n) = 2^(1/0.5) = 2² = 4.

Source: GATE ME 2018 Session 1 (Set 1) (2018)

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