PSC Civil Engg: Strength of Materials Quiz 6

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Question 1

For a certain material, Poisson’s ratio (μ) = 0.3, then the ratio of bulk modulus(K) to the modulus of rigidity(G) is ________.

• A1.1
• B2
• C2.17
• D1.17

Question 2

The state of stress of an element is given as follows.
The value of normal stress are , and major principal stress .Then the value of shear stress is.

• A30
• B25.20
• C45.90
• D34.64

Question 3

An elastic isotropic body is in a hydrostatic state of stress as shown in the figure. For no change in the volume to occur, what should be its Poisson's ratio?

• A0.00
• B0.25
• C0.50
• D1.00

Question 4

The shape factor of a rectangular section is

• A1.00
• B1.50
• C2.00
• D2.50

Question 5

In helical spring with close coil, which among the option clearly shows the stiffness of the spring?

• Acd²/8D³n
• Bcd⁴/16D³n
• Ccd⁴/8D³n
• D4cd⁴/D³n

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