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  • Question

  • The shear stress at the centre of a circular shaft under torsion is


  • Options
  • A. zero
  • B. minimum
  • C. maximum
  • D. infinity

  • Correct Answer
  • zero 

    • Strength of Materials problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. The stiffness of a closely-coiled helical spring is __________ proportional to number of turns.

    • Options
    • A. directly
    • B. inversely
      • Discuss
    • 4. 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
    • 5. The planes, which carry no shear stress, are known as principal planes.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. At the neutral axis of a beam, the shear stress is

    • Options
    • A. zero
    • B. minimum
    • C. maximum
    • D. infinity
      • Discuss
    • 7. 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
    • 8. The actual neutral axis of a reinforced cement concrete beam is based on the principle that the moment of areas of compression and tension zones at the neutral axis are equal.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 9. A column of length (l) with both ends fixed may be considered as equivalent to a column of length __________ with one end fixed and the other end free.

    • Options
    • A. l/8
    • B. l/4
    • C. l/2
    • D. l
      • Discuss
    • 10. If there is a fall in the temperature of a composite body, then a member having greater coefficient of linear expansion will be subjected to compressive stress.

    • Options
    • A. True
    • B. False
      • Discuss

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