Strength of Materials problems
- 1. A simply supported beam of span L carries a concentrated load W at its mid-span. The maximum bending moment M is
Options- A.
- B.
- C.
- D.
- E.
Discuss
Correct Answer:
- 2. The radius of gyration of a rectangular section is not proportional to
Options- A. square root of the moment of inertia
- B. square root of the inverse of the area
- C. square root of the moment of inertia divided by area of the section
- D. none of these. Discuss
Correct Answer: none of these.
- 3. A rectangular beam 20 cm wide is subjected to a maximum shearing force of 10, 000 kg, the corresponding maximum shearing stress being 30 kg/cm2. The depth of the beam is
Options- A. 15 cm
- B. 20 cm
- C. 25 cm
- D. 30 cm. Discuss
Correct Answer: 25 cm
- 4. A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the stress developed in the helical spring is
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 5. The shear stress at any section of a shaft is maximum
Options- A. at the centre of the section
- B. at a distance r/2 from the centre
- C. at the top of the surface
- D. at a distance 3/4 r from the centre
- E. none of these. Discuss
Correct Answer: at the top of the surface
- 6. The shape of the bending moment diagram over the length of a beam, carrying a uniformly distributed load is always
Options- A. linear
- B. parabolic
- C. cubical
- D. circular. Discuss
Correct Answer: parabolic
- 7. If the rivets in adjacent rows are staggered and outermost row has only one rivet, the arrangement of the rivets, is called
Options- A. chain riveting
- B. zig-zag riveting
- C. diamond riveting
- D. none of these. Discuss
Correct Answer: diamond riveting
- 8. When loads are applied proportionately to a frame structure containing its members in one plane, the structure is called
Options- A. grid frame
- B. plane frame
- C. space frame
- D. truss frame. Discuss
Correct Answer: space frame
- 9. The range within which a load can be applied on a rectangular column, to avoid any tensile stress, is
Options- A. one-half of the base
- B. one-fifth of the base
- C. one-fourth of the base
- D. one-fifth of the base
- E. one sixth of the base on either side of centroid. Discuss
Correct Answer: one-fifth of the base
- 10. For a simply supported beam of length L, the bending moment M is described as M = a (x - x3/L2), 0 ? x < L; where a is a constant. The shear force will be zero at
Options- A. the supports
- B. x = L/2
- C. x = L/3
- D. x = L/3 Discuss
Correct Answer: x = L/3
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