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  • Question
  • When a shaft is subjected to a twisting moment, every cross-section of the shaft will be under


  • Options
  • A. tensile stress
  • B. compressive stress
  • C. shear stress
  • D. bending stress

  • Correct Answer
  • shear stress 


  • Strength of Materials problems


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    • 1. In a thick cylindrical shell subjected to an internal pressure (p), the radial stress across the thickness of the cylinder is

    • Options
    • A. maximum at the outer surface and minimum at the inner surface
    • B. maximum at the inner surface and minimum at the outer surface
    • C. maximum at the outer surface and zero at the inner surface
    • D. maximum at the inner surface arid zero at the outer surface
    • Discuss
    • 2. The radius of the Mohr 's circle in the given figure is equal to

    • Options
    • A. sum of two principal stresses
    • B. difference of two principal stresses
    • C. half the sum of two principal stresses
    • D. half the difference of two principal stresses
    • Discuss
    • 3. Shear strength of the welded joint for double parallel fillet is (where ? = Allowable shear stress for weld metal)

    • Options
    • A. 0.5 s.l.?
    • B. s.l.?
    • C. 2 s.l.?
    • D. 2.s.l.?
    • Discuss
    • 4. In a thick cylindrical shell subjected to an internal pressure (p), the tangential stress is always a tensile stress where as the radial stress is a compressive stress

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 5. A column is said to be a short column, when

    • Options
    • A. its length is very small
    • B. its cross-sectional area is small
    • C. the ratio of its length to the least radhis of gyration is less than 80.
    • D. the ratio of its length to the least radius of gyration is more than 80.
    • Discuss
    • 6. A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear stress of 200 MPa. The maximum shear stress will be

    • Options
    • A. -100 MPa
    • B. 250 MPa
    • C. 300 MPa
    • D. 400 MPa
    • Discuss
    • 7. A simply supported beam of length l is loaded with a uniformly distributed load of w per unit length. The maximum deflection is and lies at the centre of the beam.

    • Options
    • A. True
    • B. False
    • Discuss
    • 8. The bending moment diagram for a cantilever beam of length l and carrying a gradually varying load from zero at the free end and w per unit length at the fixed end is a parabolic curve.

    • Options
    • A. Agree
    • B. Disagree
    • Discuss
    • 9. The torque transmitted by a hollow shaft of outer diameter (D) and inner diameter (d) is

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 10. If the section modulus of a beam is increased, the bending stress in the beam will

    • Options
    • A. not change
    • B. increase
    • C. decrease
    • Discuss


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