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Home Mechanical Engineering Machine Design Comments

  • Question
  • A crankshaft is a __________ shaft.


  • Options
  • A. transmission
  • B. machine

  • Correct Answer
  • machine 


  • Machine Design problems


    Search Results


    • 1. The load cup of a screw jack is made separate from the head of the spindle to

    • Options
    • A. enhance the load carrying capacity of the jack
    • B. reduce the effort needed for lifting the working load
    • C. prevent the rotation of load being lifted
    • D. reduce the value of frictional torque
    • Discuss
    • 2. Surface endurance limit of gear material is dependent upon its

    • Options
    • A. elastic strength
    • B. yield strength
    • C. brinell hardness number
    • D. toughness
    • Discuss
    • 3. Circumferential joint in boilers is used to get the required length of a boiler.

    • Options
    • A. True
    • B. False
    • Discuss
    • 4. According to Guest's theory, the failure occurs at a point in a member when the maximum shear stress in a bi-axial stress system reaches the shear stress at elastic limit in simple tension test.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. In order to obtain the bolts of uniform strength, an axial hole is drilled through the head as far as the threaded portion such that the area of shank becomes equal to the root area of the thread.

    • Options
    • A. True
    • B. False
    • Discuss
    • 6. Which of the following statement is wrong?

    • Options
    • A. The power transmitted by V-belts is less than flat belts for the same coefficient of friction, arc of contact and allowable tension in the belts
    • B. The V-belt drive is used with large centre distance
    • C. The V-belt may be operated in either direction with tight side of the belt at the top or bottom
    • D. The ratio of driving tensions in V-belt drive is more than flat belt drives
    • Discuss
    • 7. The ball bearings are provided with a cage

    • Options
    • A. to reduce friction
    • B. to facilitate slipping of balls
    • C. to prevent the lubricant from flowing out
    • D. to maintain the balls at a fixed distance apart
    • Discuss
    • 8. The centre distance between two meshing involute gears is equal to

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 9. The toughness of a material __________ when it is heated.

    • Options
    • A. increases
    • B. decreases
    • C. does not change
    • Discuss
    • 10. In a flange coupling, the flanges are coupled together by means of

    • Options
    • A. bolts and nuts
    • B. studs
    • C. headless taper bolts
    • D. none of these
    • Discuss


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