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Strength of Materials problems

  • 1. Shear strength of the welded joint for double parallel fillet is (where ? = Allowable shear stress for weld metal)

  • Options
  • A. 0.5 s.l.?
  • B. s.l.?
  • C. 2 s.l.?
  • D. 2.s.l.?
    • Discuss
  • 2. The radius of the Mohr 's circle in the given figure is equal to
    Mechanical Engineering Strength of Materials: The radius of the Mohr 's circle in the given figure is equal to

  • Options
  • A. sum of two principal stresses
  • B. difference of two principal stresses
  • C. half the sum of two principal stresses
  • D. half the difference of two principal stresses
    • Discuss
  • 3. In a thick cylindrical shell subjected to an internal pressure (p), the radial stress across the thickness of the cylinder is

  • Options
  • A. maximum at the outer surface and minimum at the inner surface
  • B. maximum at the inner surface and minimum at the outer surface
  • C. maximum at the outer surface and zero at the inner surface
  • D. maximum at the inner surface arid zero at the outer surface
    • Discuss
  • 4. When a shaft is subjected to a twisting moment, every cross-section of the shaft will be under

  • Options
  • A. tensile stress
  • B. compressive stress
  • C. shear stress
  • D. bending stress
    • Discuss
  • 5. A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The maximum shear stress will be

  • Options
  • A. -100 MPa
  • B. 250 MPa
  • C. 300 MPa
  • D. 400 MPa
    • Discuss
  • 6. A simply supported beam of length l is loaded with a uniformly distributed load of w per unit length. The maximum deflection is Mechanical Engineering Strength of Materials: A simply supported beam of length l is loaded with a uniformly distributed load of w p and lies at the centre of the beam.

  • Options
  • A. True
  • B. False
    • Discuss
  • 7. The bending moment diagram for a cantilever beam of length l and carrying a gradually varying load from zero at the free end and w per unit length at the fixed end is a parabolic curve.

  • Options
  • A. Agree
  • B. Disagree
    • Discuss
  • 8. The torque transmitted by a hollow shaft of outer diameter (D) and inner diameter (d) is

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 9. If the section modulus of a beam is increased, the bending stress in the beam will

  • Options
  • A. not change
  • B. increase
  • C. decrease
    • Discuss
  • 10. Two closely-coiled helical springs 'A' and 'B' of the same matenal, same number of turns and made from same wire are subjected to an axial load W. The mean diameter of spring 'A' is double the mean diameter of spring 'B'. The ratio of deflections in spring 'B' to spring 'A' will be

  • Options
  • A. 1/8
  • B. 1/4
  • C. 2
  • D. 4
    • Discuss

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