Strength of Materials problems
- 1. Principle plane is a plane on which the shear stress is
Options- A. zero
- B. minimum
- C. maximum Discuss
Correct Answer: zero
- 2. The ratio of change in volume to the original volume is called
Options- A. linear strain
- B. lateral strain
- C. volumetric strain
- D. Poisson's ratio Discuss
Correct Answer: volumetric strain
- 3. The shear force diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, consists of
Options- A. one right angled triangle
- B. two right angled triangles
- C. one equilateral triangle
- D. two equilateral triangles Discuss
Correct Answer: two right angled triangles
- 4. When a closely-coiled helical spring is subjected to an axial load, it is said to be under
Options- A. bending
- B. shear
- C. torsion
- D. crushing Discuss
Correct Answer: torsion
- 5. When two shafts of same length, one of which is hollow, transmit equal torques and have equal maximum stress, then they should have equal
Options- A. polar moment of inertia
- B. polar modulus
- C. diameter
- D. angle of twist Discuss
Correct Answer: polar modulus
- 6. For a 25 mm hole drilled in plates, the diameter of rivet shank should be
Options- A. 23mm
- B. 24.5mm
- C. 25mm
- D. 26mm Discuss
Correct Answer: 23mm
- 7. The shear force of a simply supported beam carrying a central point load changes sign at its midpoint.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 8. The efficiency of a riveted joint is the ratio of the strength of the joint to the strength of the solid plate.
Options- A. True
- B. False Discuss
Correct Answer: True
- 9. The elongation of a conical bar under its own weight is __________ that of prismatic bar of the same length.
Options- A. equal to
- B. half
- C. one-third
- D. two-third Discuss
Correct Answer: one-third
- 10. The Rankine's theory for active earth pressure is based on the assumption that
Options- A. the retained material is homogeneous and cohesionless
- B. the frictional resistance between the retaining wall and the retained material is neglected
- C. the failure of the retained material takes place along a plane called rupture plane
- D. all of the above Discuss
Correct Answer: all of the above
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