City Guilds Model Questions Vol1 2019 Engineering Question 3
Practice objective / multiple choice question 3 from the 2019 City Guilds Model Questions Vol1 Engineering examination.
An initially stress‑free steel rod of length 2.00 m and diameter 20 mm is subjected to a tensile load of 50 kN at 20 °C. The rod's Young's modulus is 200 GPa and its coefficient of linear expansion is \(12\times10^{-6}\,^{\circ}\mathrm{C}^{-1}\). The rod is then uniformly heated to 70 °C while the load remains unchanged. Calculate the total elongation of the rod after heating.
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About This Question
This is City Guilds Model Questions Vol1 2019 Engineering Question 3. It is one of the objective questions from the 2019 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Medium .
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