A body is said to be under forced vibrations, when

A. There is a reduction in amplitude after every cycle of vibration

B. No external force acts on a body, after giving it an initial displacement

C. A body vibrates under the influence of external force

D. None of the above

Related Questions

  1. When two links are connected by a pin joint, their instantaneous centre lies
  2. What is the number of instantaneous centres for an eight link mechanism?
  3. A foot step bearing and rotor of a vertical turbine form examples of
  4. In a circular arc cam with roller follower, the acceleration in any position of the lift will depend…
  5. Module of a gear is
  6. The relative velocity of B with respect to A in a rigid link AB is
  7. The pair is known as a higher pair, when the relative motion between the elements of a pair is
  8. Under logarithmic decrement, the amplitude of successive vibrations are
  9. The direction of Coriolis component of acceleration is the direction
  10. The ratio of the number of teeth to the pitch circle diameter in millimetres, is called
  11. The velocity of sliding __________ the distance of the point of contact from the pitch point.
  12. Hart mechanism has
  13. Which of the following is an open pair?
  14. A higher pair has__________.
  15. The direction of linear velocity of any point on a link with respect to another point on the same link…
  16. Two systems shall be dynamically equivalent when
  17. One end of a helical spring is fixed while the other end carries the load W which moves with simple…
  18. Longitudinal vibrations are said to occur when the particles of a body moves
  19. If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for…
  20. A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of…
  21. In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines,
  22. The velocity of a flat-faced follower when it has contact with the flank of a circular arc cam, is given…
  23. In automobiles the power is transmitted from gear box to differential through
  24. Length of arc of contact is given by
  25. Which type of gearing is used in steering system of an automobile?
  26. Transmission of power from the engine to the rear axle of an automobile is by means of
  27. Lower pairs are those which have
  28. Which of the following is an example of a higher pair?
  29. The pressure angle of a cam depends upon
  30. A cam with a roller follower would constitute following type of pair

Please do not use chat terms. Example: avoid using "grt" instead of "great".