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Mechanical Engineering :: Theory of Machine

  1. A shaft of mass (mc) and stiffness (s) is fixed at one end and carries a mass (m) at the other end. The natural frequency of its longitudinal vibration is equal to


  2. In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.

  3. A.
    equal to
    B.
    directly proportional to
    C.
    inversely proportional to
    D.
    independent of

  4. A body in motion will be subjected to coriolis acceleration when that body is

  5. A.
    in plane rotation with variable velocity
    B.
    in plane translation with variable velocity
    C.
    in plane motion which is a resultant of plane translation and rotation
    D.
    restrained to rotate while sliding over another body

  6. The rolling of a complete ship side-ways is known as pitching of a ship.

  7. A.
    True
    B.
    False

  8. The frictional torque transmitted by a disc or plate clutch is same as that of

  9. A.
    flat pivot bearing
    B.
    flat collar bearing
    C.
    conical pivot bearing
    D.
    truncated conical pivot bearing

  10. The frictional torque transmitted by a cone clutch is same as that of

  11. A.
    flat pivot bearing
    B.
    flat collar bearing
    C.
    conical pivot bearing
    D.
    truncated conical pivot bearing

  12. When two non-intersecting and non-coplaner shafts are connected by gears, the arrangement is known as helical gearing.

  13. A.
    Right
    B.
    Wrong

  14. When the elements of a pair are kept in contact by the action of external forces, the pair is said to be a

  15. A.
    lower pair
    B.
    higher pair
    C.
    self-closed pair
    D.
    force-closed pair

  16. The centrifugal tension in belts

  17. A.
    increases power transmitted
    B.
    decreases power transmitted
    C.
    have no effect on power transmitted
    D.
    increases power transmitted upto a certain speed and then decreases

  18. In a Hartnell governor, the compression of the spring is __________ the lift of the sleeve.

  19. A.
    equal to
    B.
    less than
    C.
    greater than