City Guilds Model Questions Vol1 2017 Engineering Question 40
Practice objective / multiple choice question 40 from the 2017 City Guilds Model Questions Vol1 Engineering examination.
A steel rod of length 2.00 m at \(20^{\circ}\)C is fixed rigidly at both ends so it cannot change length. The coefficient of linear thermal expansion of steel is \(\alpha = 12\times10^{-6}\ ^{\circ}\mathrm{C}^{-1}\) and Young's modulus is \(E = 200\) GPa. If the temperature rises uniformly to \(70^{\circ}\)C, calculate (a) the compressive stress induced in the rod (in MPa) and (b) the strain‑energy density stored (in kJ m\(^{-3}\)).
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About This Question
This is City Guilds Model Questions Vol1 2017 Engineering Question 40. It is one of the objective questions from the 2017 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Medium .
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