The section modulus of a rectangular section about an axis through its C.G., is

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Question
The section modulus of a rectangular section about an axis through its C.G., is
Options
A. b/2
B. d/2
C. bd²/2
D. bd²/6

Correct Answer

bd²/6

Strength of Materials problems

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3. The strain energy stored in a body, when the load is gradually applied, is (where ? = Stress in the material of the body, V = Volume of the body, and E = Modulus of elasticity of the material)
Options
A.
B.
C.
D.

4. A body is subjected to a tensile stress of 1200 MPa on one plane and another tensile stress of 600 MPa on a plane at right angles to the former. It is also subjected to a shear stress of 400 MPa on the same planes. The maximum shear stress will be
Options
A. 400 MPa
B. 500 MPa
C. 900 MPa
D. 1400 MPa

7. A simply supported beam of length l carries a point load W at a point C as shown in the below figure. The maximum deflection lies at
Options
A. point A
B. point B
C. point C
D. between points B and C

8. Young's modulus may be defined as the ratio of
Options
A. linear stress to lateral strain
B. lateral strain to linear strain
C. linear stress to linear strain
D. shear stress to shear strain

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