City Guilds Model Questions Vol1 2024 Engineering Question 25
Practice objective / multiple choice question 25 from the 2024 City Guilds Model Questions Vol1 Engineering examination.
In a turning operation a carbide tool removes material at a required rate of 1 200 mm\(^3\) min\(^{-1}\). The cutting speed is \(V_c = 30\) m min\(^{-1}\) and the feed per revolution is \(f = 0.2\) mm rev\(^{-1}\).\n\n(a) Determine the depth of cut \(a\) (mm) needed to achieve the required material‑removal rate.\n(b) With a tool nose radius \(r = 0.8\) mm, calculate the theoretical surface roughness \(R_a\) using \(R_a = \dfrac{f^{2}}{32r}\). Give \(a\) to one decimal place and \(R_a\) in micrometres (µm) to two decimal places.
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This is City Guilds Model Questions Vol1 2024 Engineering Question 25. It is one of the objective questions from the 2024 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Hard .
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