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  • Question

  • The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ?1 rad/s in the clockwise direction and the link OB turns with angular velocity ?2 rad/s in the clockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O)


  • Options
  • A. ?1.?2.r
  • B. ( ?1 - ?2)r
  • C. ( ?1 + ?2)r
  • D. ( ?1 - ?2)2r

  • Correct Answer
  • ( ?1 - ?2)r 

    • More questions

    • 1. The specific weight is also known as weight density.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 2. Which of the following material has maximum malleability?

    • Options
    • A. Lead
    • B. Soft steel
    • C. Wrought iron
    • D. Copper
      • Discuss
    • 3. A petrol that detonates easily is called

    • Options
    • A. high octane petrol
    • B. low octane petrol
    • C. unleaded petrol
    • D. blended fuel
      • Discuss
    • 4. A tool used to withdraw a drill from the sleeve is called

    • Options
    • A. drill remover
    • B. drill puller
    • C. drift
    • D. drill drawer
      • Discuss
    • 5. The length of hacksaw blade is the distance between the outside edges of the holes which fits over the pins.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 6. Euler's formula holds good only for

    • Options
    • A. short columns
    • B. long columns
    • C. both short and long columns
    • D. weak columns
      • Discuss
    • 7. Surface plate is used to check the trueness of flat surfaces.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. Follow-up prescribes the sequence of operations to be followed.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 9. An over-inflated tyre will wear the tread most near the

    • Options
    • A. edges
    • B. corners
    • C. centre
    • D. none of these
      • Discuss
    • 10. A beam encastered at both the ends is called

    • Options
    • A. simply supported beam
    • B. fixed beam
    • C. cantilever beam
    • D. continuous beam
      • Discuss

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