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PSC Civil Engg: Strength of Materials Quiz 9

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Question 1

Ab and Ac are the cross section of bronze and copper bars of equal length and σb, σc are their respective stresses due to load P. If Pb and Pc are the loads shared by them ______.

Question 2

A rectangular bar has been subjected to torsion. The maximum shear stress will occur _______.

Question 3

The ratio of the stresses produced by suddenly applied and gradually applied loads on a bar is ______.

Question 4

A Circular shaft fixed at A has diameter D for half of its length and diameter D/2 over the other half. What is the rotation of C relative to B if the rotation of B relative to A is 0.1 radians?
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Question 5

Calculate the Poisson’s ratio of the bar material if a tensile force of 350 kN is applied to it which causes its diameter its to reduce by 0.024 mm and length to increase by 0.85. The dimensions of the bar are 600mm x 60mm.
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May 29ESE & GATE CE