MOS MCQ TEST 2

The shear force diagram of a cantilever beam of length l carrying uniformly distributed load of w per unit length will be

• a right angled triangle
• an isosceles triangle
• an equilateral triangle
• a rectangle

Hooke’s law holds good up to -------

• Yield point
• Ultimate stress point
• Limit of proportionality
• Elastic limit

Relationship connecting Young’s modulus € and Bulk modulus (K) is -------

• E = 3K(1-2μ)
• E = 2K(1+2μ)
• E = 3K(1-μ)
• E = 3K(1+μ)

When a copper wire of length 2 m and diameter 40 mm is subjected to an axial pull of 80 KN, its diameter reduces by 0.00775 mm and length increased by 1.2 mm. Calculate the Poisson’s ratio of the wire.

• 0.22
• 0.13
• 0.32
• 0.35

What will be the value of Young’s modulus, if a material has Poisson’s ratio 0.25 and Shear modulus 100 Mpa?

• 250 Mpa
• 225 Mpa
• 175 Mpa
• 330 Mpa

The shear force diagram for a simply supported beam carrying a uniformly distributed load of ‘w’ N/m consists of

• One right angled triangle
• b) One equilateral triangle
• c) Two right angled triangles
• d) Two equilateral triangles

Point of contraflexure is the point

• at which shear force diagram changes its sign
• at which bending moment diagram changes its sign
• of maximum shear force
• of maximum bending moment

The maximum value of bending moment for a cantilever beam of length ‘l’ m carrying uniformly distributed load of intensity ‘w’ N/m throughout the span is -------

• wl2/2
• wl2/8
• wl2/3
• wl2/12

The section modulus for a triangle section of width ‘b’ and height ‘h’ will be -------

• bh2/16
• bh2/12
• bh2/36
• bh2/24

The value for shear stress in principle plane is -------

• One
• Maximum
• Zero
• Negative