City Guilds Model Questions Vol1 2017 Engineering Question 48
Practice objective / multiple choice question 48 from the 2017 City Guilds Model Questions Vol1 Engineering examination.
In a workshop a solvent with a permissible exposure limit (PEL) of \(50\) ppm (8‑hour TWA) is used. Each worker consumes the solvent at a rate of \(0.05\) L/min (as vapour). The ventilation system supplies \(5000\) L/min of fresh air. Assuming perfect mixing, what is the greatest number of workers that can work simultaneously without any worker's exposure exceeding the PEL?
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About This Question
This is City Guilds Model Questions Vol1 2017 Engineering Question 48. It is one of the objective questions from the 2017 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Medium .
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