AE-JE Foundation CE: Strength Of Material Quiz 3

A mild steel beam is simply supported beam. It has constant moment of inertia = 10⁶ mm⁴. The entire length of the beam is subjected to a constant BM of 10⁷ Nmm. E = 2 x 10⁵ N/mm². What is the radius curvature of the bent beam in meters?

Which of the following are implied in the assumption of plane sections remaining plane (in simple bending)?

1) Stress is proportional to the distance from the neutral axis.

2) Displacement is proportional to the distance from neutral axis.

3) Strain is zero across the cross-section

4) Strain is directly proportional to the distance from neutral axis.

Select the correct answer using the code given below:

The ratio of the section modulus of a square section of side B and that of a circular section of diameter D is

[1] [2]

[3] [4]

The moment of inertia of a rectangular section of width B and depth D about an axis passing through Centre of Gravity and parallel to its width is

A)

B)

C)  

D)

  In rectangular beam section if depth to width ratio is 2 and the beam has maximum deflection at its free end. A uniform load of intensity 5 kN/m is distributed on the whole span of length 2 m. If the permissible stress in the beam material is 15 N/mm² then the depth of the beam is

The working stress of a material is expected to be

  The maximum shear force exerted by a rectangular beam is 300 kN and the dimensions of beam is 200 mm x.600 mm. Moment of inertia of beam is 3.6 x 10⁹ mm⁴. The corresponding maximum shear stress (in N/mm²) will be