The GATE Grind

GATE Machining and Machine Tool Operations: Cutting tool materials, tool life and wear, economics of machining – Previous Year Questions

3 GATE previous year questions on Cutting tool materials, tool life and wear, economics of machining (Machining and Machine Tool Operations, Mechanical Engineering) with answers and explanations, from every paper.

  1. GATE 2024 ME Q60 (2 marks, Numerical answer) – A cutting tool provides a tool life of 60 minutes while machining with the cutting speed of 60 m/min. When the same tool is used for machining the…
  2. GATE 2025 ME Q63 (2 marks, Numerical answer) – Cylindrical workpieces of diameter 60 mm and length 400 mm are machined on a lathe at a cutting speed of 25 m min-1 and a feed of 0.2 mm rev-1. The…
  3. GATE 2026 ME Q64 (2 marks, Numerical answer) – A drill bit during its lifetime can produce 150 through holes in a plate at a drill-speed of 200 RPM. If the drill-speed increases to 300 RPM, then it…