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Mechanical Engineering :: Theory of Machine

  1. In a simple train of wheels, if the number of intermediate wheels is odd, the motion of the follower will be same as that of the driver.

  2. A.
    Yes
    B.
    No

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  3. Which of the following is a pendulum type governor?

  4. A.
    Watt governor
    B.
    Porter governor
    C.
    Hartnell governor
    D.
    none of these

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  5. The angle of inclination of the plane, at which the body begins to move down the plane is called

  6. A.
    angle of friction
    B.
    angle of repose
    C.
    angle of projection
    D.
    none of these

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  7. The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in

  8. A.
    transverse vibrations
    B.
    torsional vibrations
    C.
    longitudinal vibrations
    D.
    all of these

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  9. The centre of gravity of a coupler link in a four bar mechanism will experience

  10. A.
    no acceleration
    B.
    only linear acceleration
    C.
    only angular acceleration
    D.
    both linear and angular acceleration

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  11. The frictional torque transmitted in a flat pivot bearing, considering uniform pressure, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)

  12. A.
    μ W R
    B.
    μ W R
    C.
    μ W R
    D.
    μ W R

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  13. In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from

  14. A.
    10° - 15°
    B.
    15° - 25°
    C.
    25° - 30°
    D.
    30° - 40°

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  15. A kinematic chain is known as a mechanism when

  16. A.
    none of the links is fixed
    B.
    one of the links is fixed
    C.
    two of the links are fixed
    D.
    none of these

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  17. When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.

  18. A.
    upward
    B.
    downward

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  19. There are six gears A, B, C, D, E and F in a compound train. The numbers of teeth in the gears are 20, 60, 30, 80, 25 and 75 respectively. The ratio of angular speeds of the driven (F) to the driver (A) of the drive is

  20. A.
    1/24
    B.
    1/8
    C.
    4/15
    D.
    12

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