Strength of Materials Test Questions

MCQ: A uniformly distributed load of 20 kN/m acts on a simply supported beam of rectangular cross section of width 20 mm and depth 60 mm. What is the maximum bending stress acting on the beam of 5m?

1. 5030 Mpa
2. 5208 Mpa
3. 6600 Mpa
4. Insufficient data

MCQ: The bending formula is given as _____

1. (M/E) = (σ/y) = (R/I)
2. (M/y) = (σ/I) = (E/R)
3. (M/I) = (σ/y) = (E/R)
4. none of the above

MCQ: A circular pipe is subjected to maximum shear force of 60 kN. What is the diameter of the pipe if maximum allowable shear stress is 5 Mpa?

1. 27.311 mm
2. 75.56 mm
3. 142.72 mm
4. 692.10 mm

MCQ: The ratio of maximum shear stress to average shear stress is 4/3 in _______

1. circular cross-section
2. rectangular cross-section
3. square cross-section
4. all of the above

MCQ: Why are shear connectors used?

1. Interconnect planks
2. To avoid sliding between planks
3. Both a. and b.
4. None of the above

MCQ: The design of a beam is based on strength criteria, if the beam is sufficiently strong to resist _______

1. shear force
2. deflection
3. both a. and b.
4. none of the above

MCQ: The vertical distance between the axis of the beam before and after loading at a point is called as _______

1. deformation
2. deflection
3. slope
4. none of the above

MCQ: Macaulay's method is used to determine ______

1. deflection
2. strength
3. toughness
4. all of the above

MCQ: Modulus of resilience is the ratio of ______

1. minimum strain energy and unit volume
2. maximum stress energy and unit volume
3. proof resilience and unit volume
4. resilience and unit area

MCQ: What is the strain energy stored in a cube of 50 mm, when it is subjected to shear stress of 200 Mpa. (G = 100 Gpa)

1. 25 Nm
2. 75 Nm
3. 125 Nm
4. 150 Nm