Young's Modulus

When too many people stand on a bridge it collapses, why?

• Due to increase in stress

• Due to overweight

• Due to improper construction

• Due to friction

For a constant force, a rope breaks due to stress. Which of the following is useful to reduce the stress?

• Increase the length of the rope

• Apply small force

• Increase the cross sectional area of the rope

• Use a different material of rope

In simply supported beams, the _____ stress distribution is not uniform.

• Bending

• Shearing

• Tensile

• Compressive

In cantilever beams, there is _______ stress above neutral axis.

• Compressive

• Tensile

• Temperature

• Shear

A cantilever beam having uniformly distributed load on the entire length, then the maximum bending moment will be at the:

• Free end

• Middle

• Fixed end

• None of the above

In a cantilever beam tensile reinforcement is provided:

• on top of beam

• on bottom of beam

• at middle of beam

• on top and bottom of beam

Hooke’s law is applicable within

• Elastic limit

• Plastic limit

• Fracture point

• Ultimate strength

The stress at which extension of a material takes place more quickly as compared to increase in load, is called

• No elastic zone

• Plastic point

• Yield point

• Breaking point

A beam which is loaded at one end and free at other is called as

• Simply Supported beam

• cantilever beam

• Fixed beam

• Hanging beam

When a bar of length 'L' , WIDTH 'b' and thickness 't' is subjected to a pull of 'P' its

• Length, width and thickness increases

• Length, width and thickness decreases

• Length increases, width and thickness decreases

• Length decreases, width and thickness increases