City Guilds Model Questions Vol1 2018 Engineering Question 4
Practice objective / multiple choice question 4 from the 2018 City Guilds Model Questions Vol1 Engineering examination.
In a turning operation the cutting time per part is given by \(t = \dfrac{K}{V}\) where \(K = 0.5\ \text{min·(m/min)}\) and \(V\) is the cutting speed in \(\text{m/min}\). The tool‑life relationship is \(V T^{0.25} = 200\). The cost of a new tool is $50, the machine operating cost is $0.10 per minute, and the material cost per part is $30. Determine the cutting speed \(V\) (in \(\text{m/min}\), to the nearest whole number) that minimises the total cost per part.
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About This Question
This is City Guilds Model Questions Vol1 2018 Engineering Question 4. It is one of the objective questions from the 2018 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Hard .
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