strength-of-materials civil-engineering question and answers -Page first

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Strength of Materials problems

1. The ratio of elongations of a conical bar due to its own weight and that of a prismatic bar of the same length, is
Options
A.
B.
C.
D.
E.

Correct Answer:

2. The maximum twisting moment a shaft can resist, is the product of the permissible shear stress and
Options
A. moment of inertia
B. polar moment of inertia
C. polar modulus
D. modulus of rigidly.

Correct Answer: polar modulus

3. The deflection due to couple M at the free end of a cantilever length L is
Options
A.
B.
C.
D.

Correct Answer:

4. The weakest section of a diamond riveting, is the section which passes through
Options
A. first row
B. second row
C. central raw
D. one rivet hole of end row.

Correct Answer: first row

5. A reinforced concrete beam is assumed to be made of
Options
A. homogeneous material
B. heterogeneous material
C. isotropic material
D. none of these.

Correct Answer: heterogeneous material

6. The slenderness ratio of a vertical column of a square cross-section of 2.5 cm sides and 300 cm length, is
Options
A. 200
B. 240
C. 360
D. 416
E. 500

Correct Answer: 416

7. For a simply supported beam with a central load, the bending moment is
Options
A. least at the centre
B. least at the supports
C. maximum at the supports
D. maximum at the centre.

Correct Answer: maximum at the centre.

8. For a given material Young's modulus is 200 GN/m² and modulus of rigidity is 80 GN/m². The value of Poisson's ratio is
Options
A. 0.15
B. 0.20
C. 0.25
D. 0.30
E. 0.40

Correct Answer: 0.25

9. A triangular section having base b, height h, is placed with its base horizontal. If the shear stress at a depth y from top is q, the maximum shear stress is
Options
A.
B.
C.
D.

Correct Answer:

10. As compared to uniaxial tension or compression, the strain energy stored in bending is only
Options
A.
B.
C.
D.

Correct Answer:

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