City Guilds Model Questions Vol1 2025 Engineering Question 45
Practice objective / multiple choice question 45 from the 2025 City Guilds Model Questions Vol1 Engineering examination.
A rectangular plate is measured with the following uncertainties (one‑sigma, independent): length \(L = 200.0\ \text{mm}\) (±0.2 mm), width \(W = 150.0\ \text{mm}\) (±0.1 mm), thickness \(t = 10.0\ \text{mm}\) (±0.01 mm), and mass \(m = 500.0\ \text{g}\) (±0.5 g). The density is calculated as \(\rho = m/(LWT)\). Using first‑order error propagation, determine the percentage uncertainty in the calculated density, expressed to two decimal places.
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This is City Guilds Model Questions Vol1 2025 Engineering Question 45. It is one of the objective questions from the 2025 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Hard .
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