City Guilds Model Questions Vol1 2021 Engineering Question 17
Practice objective / multiple choice question 17 from the 2021 City Guilds Model Questions Vol1 Engineering examination.
A gear blank must have a final mass of 2 kg and a minimum yield strength of 200 MPa. Three manufacturing processes are available:\n\n- Casting: material waste 30 %, cost = ₦800 per kg, yield strength = 150 MPa.\n- Forging: material waste 10 %, cost = ₦1200 per kg, yield strength = 300 MPa.\n- Machining: material waste 5 %, cost = ₦1500 per kg, yield strength = 250 MPa.\n\nThe total production cost must not exceed ₦3000. Identify which process(es) satisfy all the requirements and state the total cost (rounded to the nearest naira) for each feasible process.
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About This Question
This is City Guilds Model Questions Vol1 2021 Engineering Question 17. It is one of the objective questions from the 2021 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Hard .
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