PSC Civil Engg: Strength of Materials Quiz 7

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Question 1

The ratio of hydrostatic stress to the volumetric strain within the elastic range is called __________.

• Amodulus of elasticity
• Bshear modulus of elasticity
• CBoth modulus of elasticity and shear modulus of elasticity
• DNone of theses

Question 2

For a strongest rectangular beam cut from a circular log, the ratio of the width and depth is _____.

• A0.303
• B0.404
• C0.505
• D0.707

Question 3

In case of biaxial stress, the maximum value of shear stress is given by

• ADifference of the normal stresses
• BHalf the difference of the normal stresses
• CSum of the normal stresses
• DHalf the sum of the normal stresses

Question 4

In a section undergoing pure bending, the neutral surface is subjected to

• Acompression strain
• Btensile strain
• Czero strain
• DNone of the above

Question 5

The curvature at any point along the curve representing the deformed shape of a beam is given by

• A
• B () /
• C () /
• D /

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