City Guilds Model Questions Vol1 2023 Engineering Question 43
Practice objective / multiple choice question 43 from the 2023 City Guilds Model Questions Vol1 Engineering examination.
In a workshop two machines are used: a lathe and a milling machine. The lathe has a recorded minor‑injury probability of 0.8 per 1 000 operating hours, while the milling machine's probability is 1.2 per 1 000 operating hours. Introducing a new safety protocol reduces the lathe's injury probability by a factor of 0.4 and the milling machine's probability by a factor of 0.5, but it adds a fixed 0.5 h of set‑up time to each 8‑hour shift. Each injury causes 4 h of lost production. Should the workshop adopt the protocol? Compute the expected total lost time (in hours) per shift with and without the protocol and state the decision.
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About This Question
This is City Guilds Model Questions Vol1 2023 Engineering Question 43. It is one of the objective questions from the 2023 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Medium .
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