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Mechanical Engineering :: Theory of Machine

  1. The axis of precession is __________ to the plane in which the axis of spin is going to rotate.

  2. A.
    parallel
    B.
    perpendicular

  3. Bifilar suspension method is used to find the

  4. A.
    angular acceleration of the body
    B.
    moment of inertia of the body
    C.
    periodic time of the body
    D.
    frequency of vibration of the body

  5. The equation of motion for a vibrating system with viscous damping is

    If the roots of this equation are real, then the system will be

  6. A.
    overdamped
    B.
    under damped
    C.
    critically damped
    D.
    without vibrations

  7. The motion between a pair when limited to a definite direction, irrespective of the direction of force applied, is known as

  8. A.
    completely constrained motion
    B.
    incompletely constrained motion
    C.
    successfully constrained motion
    D.
    none of these

  9. The motion of a shaft in a circular hole is an example of

  10. A.
    completely constrained motion
    B.
    incompletely constrained motion
    C.
    successfully constrained motion
    D.
    none of these

  11. A spring controlled governor is said to be unstable when the controlling force

  12. A.
    increases as the radius of rotation decreases
    B.
    increases as the radius of rotation increases
    C.
    decreases as the radius of rotation increases
    D.
    remains constant for all radii of rotation

  13. The equivalent length of a simple pendulum depends upon the distance between the point of suspension and the centre of gravity.

  14. A.
    True
    B.
    False

  15. Balancing of rotating and reciprocating parts of an engine is necessary when it runs at

  16. A.
    slow speed
    B.
    moderate speed
    C.
    highs peed
    D.
    any one of these

  17. When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

  18. A.
    screw pair
    B.
    spherical pair
    C.
    turning pair
    D.
    sliding pair

  19. In a locomotive, the resultant unbalanced force due to the two cylinders along the line of stroke, is known as

  20. A.
    tractive force
    B.
    swaying couple
    C.
    hammer blow
    D.
    none of these