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  • Question
  • A steel rod of 2 cm diameter and 5 metres long is subjected to an axial pull of 3000 kg. If E = 2.1 x 106, the elongation of the rod will be


  • Options
  • A. 2.275 mm
  • B. 0.2275 mm
  • C. 0.02275 mm
  • D. 2.02275 mm.

  • Correct Answer
  • 0.2275 mm 


  • Strength of Materials problems


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    • 1. At either end of a plane frame, maximum number of possible bending moments, are

    • Options
    • A. one
    • B. two
    • C. three
    • D. four
    • E. zero.
    • Discuss
    • 2. The ratio of the tensile stress developed in the wall of a boiler in the circumferential direction to the tensile stress in the axial direction, is

    • Options
    • A. 4
    • B. 3
    • C. 2
    • D. 1
    • Discuss
    • 3. The point of contraflexture occurs in

    • Options
    • A. cantilever beams only
    • B. continuous beams only
    • C. over hanging beams only
    • D. all types of beams
    • E. both (a) and (b).
    • Discuss
    • 4. A member which does not regain its original shape after removed of load producing deformation is said

    • Options
    • A. plastic
    • B. elastic
    • C. rigid
    • D. none of these.
    • Discuss
    • 5. When a rectangular beam is loaded longitudinally, shear develops on

    • Options
    • A. bottom fibre
    • B. top fibre
    • C. middle fibre
    • D. every-horizontal plane.
    • Discuss
    • 6. For a given material, if E, C, K and m are Young's modulus, shearing modulus, bulk modulus and poisson ratio, the following relation does not hold good

    • Options
    • A.
    • B.
    • C.
    • D.
    • E.
    • Discuss
    • 7. In a shaft rotated by a couple, the shear force varies

    • Options
    • A. from zero at the centre to a maximum at the circumference
    • B. from minimum at the centre of maximum at the circumference
    • C. from maximum at the centre to zero at the circumference
    • D. equally throughout the section
    • E. none of these.
    • Discuss
    • 8. The force in the member DE of the truss shown in below figure will be

    • Options
    • A. zero
    • B. 2 W tensile
    • C. 2 W compressive
    • D. 4 W compressive
    • E. 4 W tensile.
    • Discuss
    • 9. The force in BD of the truss shown in below figure is :

    • Options
    • A. 500 kg compressive
    • B. 500 kg tensile
    • C. 1500 kg tensile
    • D. 1500 kg compressive
    • E. zero.
    • Discuss
    • 10. Along the neutral axis of a simply supported beam

    • Options
    • A. fibres do not undergo strain
    • B. fibres undergo minimum strain
    • C. fibres undergo maximum strain
    • D. none of these.
    • Discuss


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