GATE ME 2015 Set 2 — Question 48
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Machine Design → Beams & Columns → Shafts, Keys & Couplings
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Question
A hollow shaft ( where and are the outer and inner diameters respectively) needs to transmit power at . If the maximum permissible shear stress is , is
Correct answer
(B) 22.58 mm
Solution
Given:
1.Calculate Torque ():
2.Use the shear stress formula for a hollow shaft:
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