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Home Mechanical Engineering Strength of Materials Comments

  • Question
  • The stiffness of a closely-coiled helical spring is __________ proportional to number of turns.


  • Options
  • A. directly
  • B. inversely

  • Correct Answer
  • inversely 


  • Strength of Materials problems


    Search Results


    • 1. In the below figure, the plastic range occurs

    • Options
    • A. before point A
    • B. beyond point A
    • C. between points A and D
    • D. between points D and E
    • Discuss
    • 2. The planes, which carry no shear stress, are known as principal planes.

    • Options
    • A. True
    • B. False
    • Discuss
    • 3. Within elastic limit, shear stress is __________ shear strain.

    • Options
    • A. equal to
    • B. less than
    • C. directly proportional to
    • D. inversely proportional to
    • Discuss
    • 4. The maximum bending moment of a simply supported beam of span l and carrying a point load W at the centre of beam, is

    • Options
    • A. Wl/4
    • B. Wl/2
    • C. Wl
    • D. Wl2/4
    • Discuss
    • 5. A pressure vessel is said to be a thick shell, when

    • Options
    • A. it is made of thick sheets
    • B. the internal pressure is very high
    • C. the ratio of wall thickness of the vessel to its diameter is less than 1/10.
    • D. the ratio of wall thickness of the vessel to its diameter is greater than 1/10.
    • Discuss
    • 6. The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional area is

    • Options
    • A. 2/3
    • B. 3/4
    • C. 1
    • D. 9/8
    • Discuss
    • 7. A beam of triangular section is placed with its base horizontal. The maximum shear stress occurs at

    • Options
    • A. apex of the triangle
    • B. mid of the height
    • C. centre of gravity of the triangle
    • D. base of the triangle
    • Discuss
    • 8. The shear stress at the centre of a circular shaft under torsion is

    • Options
    • A. zero
    • B. minimum
    • C. maximum
    • D. infinity
    • Discuss
    • 9. At the neutral axis of a beam, the shear stress is

    • Options
    • A. zero
    • B. minimum
    • C. maximum
    • D. infinity
    • Discuss
    • 10. The product of Young's modulus (E) and moment of inertia (I) is known as

    • Options
    • A. modulus of rigidity
    • B. bulk modulus
    • C. flexural rigidity
    • D. torsional rigidity
    • Discuss


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