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  • Question

  • In the torsion equation In the torsion equation the term J/R is called shear modulus section modulus polar modulus none of t the term J/R is called


  • Options
  • A. shear modulus
  • B. section modulus
  • C. polar modulus
  • D. none of these

  • Correct Answer
  • polar modulus 

    • Strength of Materials problems

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    • 1. The maximum stress produced in a bar of tapering section is at

    • Options
    • A. smaller end
    • B. larger end
    • C. middle
    • D. anywhere
      • Discuss
    • 2. The energy stored in a body when strained within elastic limit is known as

    • Options
    • A. resilience
    • B. proof resilience
    • C. strain energy
    • D. impact energy
      • Discuss
    • 3. A masonry dam may fail due to

    • Options
    • A. tension in the masonry of the dam and its base
    • B. overturning of the dam
    • C. crushing of masonry at the base of the dam
    • D. any one of the above
      • Discuss
    • 4. When shear force at a point is zero, then bending moment is __________ at that point.

    • Options
    • A. zero
    • B. minimum
    • C. maximum
    • D. infinity
      • Discuss
    • 5. In compression test, the fracture in cast iron specimen would occur along

    • Options
    • A. the axis of load
    • B. an oblique plane
    • C. at right angles to the axis of specimen
    • D. would not occur
      • Discuss
    • 6. For a beam, as shown in the below figure, the maximum deflection is .

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. In order to prevent crushing of masonry at the base of the dam, the maximum stress should be __________ the permissible stress of the soil.

    • Options
    • A. equal to
    • B. less than
    • C. more than
      • Discuss
    • 8. Strain resetters are used to

    • Options
    • A. measure shear strain
    • B. measure linear strain
    • C. measure volumetric strain
    • D. relieve strain
      • Discuss
    • 9. A steel bar of 5 mm is heated from 15° C to 40° C and it is free to expand. The bar Will induce

    • Options
    • A. no stress
    • B. shear stress
    • C. tensile stress
    • D. compressive stress
      • Discuss
    • 10. The strain energy stored in a solid circular shaft subjected to shear stress (?) is (where C = Modulus of rigidity for the shaft material)

    • Options
    • A. x Volume of shaft
    • B. x Volume of shaft
    • C. x Volume of shaft
    • D. x Volume of shaft
      • Discuss

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