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  • Question
  • A screw is said to be over hauling screw, if its efficiency is


  • Options
  • A. less than 50%
  • B. more than 50%
  • C. equal to 50%
  • D. none of these

  • Correct Answer
  • more than 50% 


  • Machine Design problems


    Search Results


    • 1. Soderberg relation is based on __________ of the material whereas all other failure relation for dynamic loading are based on ultimate strength of the material.

    • Options
    • A. elastic strength
    • B. yield strength
    • C. shear strength
    • Discuss
    • 2. A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)

    • Options
    • A. less than 20 d
    • B. greater than 30 d
    • C. between 20 d and 30 d
    • D. equal to inside diameter of pipe
    • Discuss
    • 3. The sleeve or muff coupling is designed as a

    • Options
    • A. dun cylinder
    • B. thick cylinder
    • C. solid shaft
    • D. hollow shaft
    • Discuss
    • 4. The constant factor in case of R10 series of preferred numbers is

    • Options
    • A. 1.06
    • B. 1.12
    • C. 1.26
    • D. 1.58
    • Discuss
    • 5. Two shafts A and B under pure torsion are of identical length and identical weight and are made of the same material. The shaft A is solid and the shaft B is hollow. We can say that

    • Options
    • A. shaft B is better than shaft A
    • B. shaft A is better than shaft B
    • C. both the shafts are equally good
    • Discuss
    • 6. According to Indian standard specifications, 100 H6/g5 means that the

    • Options
    • A. actual size is 100 mm
    • B. basic size is 100 mm
    • C. difference between the actual size and basic size is 100 mm
    • D. none of the above
    • Discuss
    • 7. In a flange coupling, the thickness of flanges is taken as one-half the diameter of shaft.

    • Options
    • A. Agree
    • B. Disagree
    • Discuss
    • 8. A locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called

    • Options
    • A. castle nut
    • B. jam nut
    • C. ring nut
    • D. sawn nut
    • Discuss
    • 9. The number of rivets in shear shall be equal to the number of rivets in crushing.

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 10. For maximum power, the velocity of the belt will be

    • Options
    • A.
    • B.
    • C.
    • D. none of these
    • Discuss


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