Strength of Materials problems
- 1. The unit of modulus of elasticity is same as those of
Options- A. stress, strain and pressure
- B. stress, force and modulus of rigidity
- C. strain, force and pressure
- D. stress, pressure and modulus of rigidity Discuss
Correct Answer: stress, pressure and modulus of rigidity
- 2. The pull required to crush the rivet per pitch length is
Options- A. p.t.?t
- B. d.t.?c
- C. ?/4 x d2 x ?t
- D. ?/4 x d2 x ?c Discuss
Correct Answer: d.t.?c
- 3. The breaking stress is __________ the ultimate stress.
Options- A. equal to
- B. less than
- C. greater than Discuss
Correct Answer: less than
- 4. The design of thin cylindrical shells is based on
Options- A. hoop stress
- B. longitudinal stress
- C. arithmetic mean of the hoop and the longitudinal stress
- D. geometric mean of the hoop and longitudinal stress Discuss
Correct Answer: hoop stress
- 5. Which of the following statement is wrong?
Options- A. In the theory of simple bending, the assumption is that the plane sections before bending remains plane after bending.
- B. In a beam subjected to bending moment, the strain is directly proportional to the distance from the neutral axis.
- C. At the neutral axis of a beam, the bending stress is maximum.
- D. The bending stress in a beam is inversely proportional to the section modulus. Discuss
Correct Answer: At the neutral axis of a beam, the bending stress is maximum.
- 6. According to Euler's column theory, the crippling load of a column is given by p = ?2 EI/Cl2. In the Euler's formula, the value of C for a column with one end fixed and the other end free, is
Options- A. 1/2
- B. 1
- C. 2
- D. 4 Discuss
Correct Answer: 4
- 7. A simply supported beam 'A' of length l, breadth b and depth d carries a central load W. Another beam 'B' of the same dimensions carries a central load equal to 2 W. The deflection of beam 'B' will be __________ as that of beam 'A'.
Options- A. one-fourth
- B. one-half
- C. double
- D. four times Discuss
Correct Answer: double
- 8. The ratio of the largest load in a test to the original cross-sectional area of the test piece is called
Options- A. elastic limit
- B. yield stress
- C. ultimate stress
- D. breaking stress Discuss
Correct Answer: ultimate stress
- 9. If the modulus of elasticity of a material is twice its modulus of rigidity, then the Poisson's ratio of the material is equal to zero.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 10. A column with maximum equivalent length has
Options- A. both ends hinged
- B. both ends fixed
- C. one end fixed and the other end hinged
- D. one end fixed and the other end free Discuss
Correct Answer: one end fixed and the other end free
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