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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

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    • Options
    • A. OC
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    • C. OQ
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      • Discuss
    • 2. The ball bearings are provided with a cage

    • Options
    • A. to reduce friction
    • B. to facilitate slipping of balls
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      • Discuss
    • 3. A simply supported beam of length l carries a point load W at a point C as shown in the below figure. The maximum deflection lies at

    • Options
    • A. point A
    • B. point B
    • C. point C
    • D. between points B and C
      • Discuss
    • 4. According to Indian standard specifications, cast iron designated by 'FG 150' means

    • Options
    • A. white cast iron with B.H.N. 150
    • B. white cast iron with 150 MPa as minimum compressive strength
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      • Discuss
    • 5. A body is said to move or vibrate with simple harmonic motion if its acceleration is directed towards the mean position.

    • Options
    • A. True
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      • Discuss
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    • Options
    • A. towards the wall at its upper and
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      • Discuss
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    • Options
    • A. angle of friction
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      • Discuss
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    • Options
    • A. pitch circle
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    • 9. The moment of inertia of a thin rod of mass m and length l,about an axis through its centre of gravity and perpendicular to its length is

    • Options
    • A. ml2/4
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      • Discuss
    • 10. The air cooling system mostly used in transport type aircrafts is

    • Options
    • A. simple air cooling system
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      • Discuss

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