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Mechanical Engineering :: Theory of Machine

  1. A mechanism __________ for transmitting or transforming motion.

  2. A.
    can be used
    B.
    can not be used

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  3. The distance moved by the valve from one end to the other end is called valve travel.

  4. A.
    True
    B.
    False

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  5. The Klein's method of construction for reciprocating engine mechanism

  6. A.
    is a simplified version of instantaneous centre method
    B.
    utilises a quadrilateral similar to the diagram of mechanism for reciprocating engine
    C.
    enables determination of coriolis component
    D.
    is based on the acceleration diagram

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  7. A Watt's governor is a spring loaded governor.

  8. A.
    Yes
    B.
    No

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  9. The velocity of the rubbing surface __________ with the distance from the axis of the bearing.

  10. A.
    increases
    B.
    decreases

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  11. The brake commonly used in railway trains is

  12. A.
    shoe brake
    B.
    band brake
    C.
    band and block brake
    D.
    internal expanding brake

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  13. The face of the tooth is the

  14. A.
    surface of the top of tooth
    B.
    surface of tooth above the pitch surface
    C.
    width of tooth below the pitch surface
    D.
    width of tooth measured along the pitch circle

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  15. A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when

  16. A.
    a is + ve and b = 0
    B.
    a = 0 and b is + ve
    C.
    a is + ve and b is - ve
    D.
    a is + ve and b is also + ve

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  17. The acceleration of the particle moving with simple harmonic motion is __________ at the mean position.

  18. A.
    zero
    B.
    minimum
    C.
    maximum

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  19. In a differential band brake as shown in the below figure, if the length OB is greater than OA, then the force P at C should act in the downward direction.

  20. A.
    Yes
    B.
    No

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