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Home Mechanical Engineering Strength of Materials See What Others Are Saying!
  • Question
  • The maximum diameter of the hole that can be punched from a plate of maximum shear stress 1/4th of its maximum crushing stress of punch, is equal to (where t = Thickness of the plate)


  • Options
  • A. t
  • B. 2t
  • C. 4t
  • D. 8t

  • Correct Answer
  • 4t 


  • More questions

    • 1. The expansion of steam, as it flows over the blades in reaction turbine, represents

    • Options
    • A. isothermal process
    • B. isentropic process
    • C. throttling process
    • D. free-expansion process
    • Discuss
    • 2. The ideal angle of banking provided on the curves on roads depends upon

    • Options
    • A. weight of the vehicle
    • B. (velocity)2 of the vehicle
    • C. nature of the road surface
    • D. coefficient of friction between the road and vehicle contact point
    • Discuss
    • 3. The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

    • Options
    • A. D + d
    • B. D - d
    • C. D x d
    • D. D / d
    • Discuss
    • 4. The ductility of the material __________ with the decrease in percentage elongation of a specimen under tensile test.

    • Options
    • A. increases
    • B. decreases
    • C. remains same
    • Discuss
    • 5. The discharge through a reaction turbine __________ with the increase in unit speed.

    • Options
    • A. remains same
    • B. increases
    • C. decreases
    • Discuss
    • 6. Sand wash is a casting defect which

    • Options
    • A. results in a mismatching of the top and bottom parts of a casting
    • B. results in general enlargement of the casting
    • C. occurs near the ingates as rough lumps on the surface of a casting
    • D. occurs as sand patches on the upper surface of a casting
    • Discuss
    • 7. The metal extrusion process is generally used for producing

    • Options
    • A. uniform solid sections
    • B. uniform hollow sections
    • C. uniform solid and hollow sections
    • D. varying solid and hollow sections
    • Discuss
    • 8. The sensible heat factor during cooling and dehumidification process is given by (where h1 = Enthalpy of air entering the cooling coil, h2 = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 9. The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as

    • Options
    • A. hot piercing
    • B. extrusion
    • C. cold peening
    • D. cold heading
    • Discuss
    • 10. The process of adding moisture to the air, without change in its dry bulb temperature, is known as humidification.

    • Options
    • A. Agree
    • B. Disagree
    • Discuss


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