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  • Question
  • According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double shear) is (where n = Number of rivets per pitch length)


  • Options
  • A. According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in doubled2 x ? x n
  • B. 1.875 x According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in doubled2 x ? x n
  • C. 2 x According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in doubled2 x ? x n
  • D. 3 x According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in doubled2x ? x n

  • Correct Answer
  • 1.875 x d2 x ? x n 


  • Machine Design problems


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    • 1. For unequal width of butt straps, the thickness of butt straps are

    • Options
    • A. 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
    • B. 0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside
    • C. 0.75 t for both the straps on the inside and outside
    • D. 0.625 t for both the straps on the inside and outside
    • Discuss
    • 2. The value of stress concentration factor depends upon

    • Options
    • A. material of the part
    • B. geometry of the part
    • C. material and geometry of the part
    • D. none of these
    • Discuss
    • 3. The resistance to fatigue of a material is measured by

    • Options
    • A. elastic limit
    • B. Young's modulus
    • C. ultimate tensile strength
    • D. endurance limit
    • Discuss
    • 4. A column is known as a long column if the slenderness ratio is

    • Options
    • A. 40
    • B. 50
    • C. 70
    • D. 100
    • Discuss
    • 5. The pipe joint mostly used for pipes carrying water at low pressures is

    • Options
    • A. socket joint
    • B. nipple joint
    • C. union joint
    • D. spigot and socket joint
    • Discuss
    • 6. Which of the following statement is correct for gears?

    • Options
    • A. The addendum is less than dedendum
    • B. The pitch circle diameter is equal to the product of module and number of teeth
    • C. The pitch circle is always greater than the base circle
    • D. all of the above
    • Discuss
    • 7. Slenderness ratio is the ratio of

    • Options
    • A. maximum size of column to minimum size of column
    • B. width of column to depth of column
    • C. effective length of column to least radius of gyration of the column
    • D. effective length of column to width of column
    • Discuss
    • 8. Screws used for power transmission should have

    • Options
    • A. Low efficiency
    • B. high efficiency
    • C. very fine threads
    • D. strong teeth
    • Discuss
    • 9. An open belt drive is used when

    • Options
    • A. shafts are arranged parallel and rotate in the opposite directions
    • B. shafts are arranged parallel and rotate in the same directions
    • C. shafts are arranged at right angles and rotate in one definite direction
    • D. driven shaft is to be started or stopped whenever desired without interferring with the driving shaft
    • Discuss
    • 10. A transmission shaft includes

    • Options
    • A. counter shaft
    • B. line shaft
    • C. over head shaft
    • D. all of these
    • Discuss


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