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  • Question
  • The change in length due to a tensile or compressive force acting on a body is given by (where P = Tensile or compressive force acting on the body, l = Original length of the body, A = Cross-sectional area of the body, and E = Young's modulus for the material of the body)


  • Options
  • A. The change in length due to a tensile or compressive force acting on a body is given by (where P = T
  • B. The change in length due to a tensile or compressive force acting on a body is given by (where P = T
  • C. The change in length due to a tensile or compressive force acting on a body is given by (where P = T
  • D. The change in length due to a tensile or compressive force acting on a body is given by (where P = T

  • Correct Answer
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  • Strength of Materials problems


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    • 1. The distance between the centre of a rivet hole to the nearest edge of plate, is called

    • Options
    • A. margin
    • B. pitch
    • C. back pitch
    • D. diagonal pitch
    • Discuss
    • 2. The neutral axis of a transverse section of a beam passes through the centre of gravity of the section and is

    • Options
    • A. in the vertical plane
    • B. in the horizontal plane
    • C. in the same plane in which the beam bends
    • D. at right angle to the plane in which the beam bends
    • Discuss
    • 3. When a body is subjected to a direct tensile stress (?) in one plane, then tangential or shear stress on an oblique section of the body inclined at an angle ? to the normal of the section is

    • Options
    • A. ? sin 2?
    • B. ? cos 2?
    • C. ?/2 sin 2?
    • D. ?/2 cos 2?
    • Discuss
    • 4. The values of equivalent length (L) and actual length (l) of a column for both ends hinged is the same

    • Options
    • A. Yes
    • B. No
    • Discuss
    • 5. The perpendicular distance between the centre lines of the successive rows, is called pitch.

    • Options
    • A. Agree
    • B. Disagree
    • Discuss
    • 6. A steel bar 2 m long, 20 mm wide and 10 mm thick is subjected to a pull of 2 kN. If the same bar is subjected to a push of 2 kN, the Poission's ratio of the bar in tension will be __________ the Poisson's ratio for the bar in compression.

    • Options
    • A. equal to
    • B. less than
    • C. greater than
    • Discuss
    • 7. A thin cylindrical shell of diameter (d), length (l) and thickness (t)is subjected to an internal pressure (p). The hoop stress in the shell is

    • Options
    • A. pd/t
    • B. pd/2t
    • C. pd/4t
    • D. pd/6t
    • Discuss
    • 8. For biaxial stress, the planes of maximum shear are at right angles to each other and are inclined at 45° to the principal planes.

    • Options
    • A. True
    • B. False
    • Discuss
    • 9. When a body is subjected to a direct tensile stress (?) in one plane, then normal stress on an oblique section of the body inclined at an angle ? to the normal of the section is

    • Options
    • A. ? cos ?
    • B. ? cos2 ?
    • C. ? sin ?
    • D. ? sin2 ?
    • Discuss
    • 10. In the above question, the ratio of stiffness of spring 'B' to spring 'A' will be

    • Options
    • A. 2
    • B. 4
    • C. 6
    • D. 8
    • Discuss


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