GATE 2021 PI – Question 30
General Engineering · Theory of Machines and Design · 1 mark · Numerical answer
An M30 bolt requires pretension F_i = 350 kN. Torque coefficient K = 0.2. Find tightening torque in N·m (integer).
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Show answer and explanation
Correct answer: 2100 to 2100
Explanation
Use $T=KF_id$ with nominal diameter d = 0.030 m. Thus T = 0.2×350000×0.030 = **2100 N·m**.
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