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Home Mechanical Engineering Strength of Materials Comments

  • Question
  • The springs in brakes and clutches are used to


  • Options
  • A. to apply forces
  • B. to measure forces
  • C. to store strain energy
  • D. to absorb shocks

  • Correct Answer
  • to apply forces 


  • Strength of Materials problems


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    • 1. The thermal or temperature stress is a function of

    • Options
    • A. increase in temperature
    • B. modulus of elasticity
    • C. coefficient of linear expansion
    • D. all of these
    • Discuss
    • 2. When a circular bar tapering uniformly from diameter d1, at one end to diameter d2 at the other end, is subjected to an increase in temperature (t), then the thermal stress induced is (where ? = Coefficient of linear expansion, and E = Modulus of elasticity for the bar material)

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 3. A body is subjected to a tensile stress of 1200 MPa on one plane and another tensile stress of 600 MPa on a plane at right angles to the former. It is also subjected to a shear stress of 400 MPa on the same planes. The minimum normal stress will be

    • Options
    • A. 400 MPa
    • B. 500 MPa
    • C. 900 MPa
    • D. 1400 MPa
    • Discuss
    • 4. The maximum deflection of a fixed beam carrying a central point load lies at

    • Options
    • A. fixed ends
    • B. centre of beam
    • C. l/3 from fixed ends
    • D. none of these
    • Discuss
    • 5. A bar of length L metres extends by l mm under a tensile force of P. The strain produced in the bar is

    • Options
    • A. l/L
    • B. 0.1 l/L
    • C. 0.01 l/L
    • D. 0.001 l/L
    • Discuss
    • 6. The maximum deflection of a fixed beam of length l carrying a central point load W is

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 7. The shear force and bending moment are zero at the free end of a cantilever beam, if it carries a

    • Options
    • A. point load at the free end
    • B. point load at the middle of its length
    • C. uniformly distributed load over the whole length
    • D. none of the above
    • Discuss
    • 8. In Mohr's circle, the centre of circle from Y-axis is taken as

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 9. The shear force diagram fora cantilever beam of length l and carrying a gradually varying load from zero at free end and w per unit length at the fixed end is a

    • Options
    • A. horizontal straight line
    • B. vertical straight line
    • C. inclined line
    • D. parabolic curve
    • Discuss
    • 10. When a body is subjected to a direct tensile stress (?) in one plane, the maximum shear stress is __________ the maximum normal stress.

    • Options
    • A. equal to
    • B. one-half
    • C. two-third
    • D. twice
    • Discuss


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