Home

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

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

You can do it
  1. Throw of a cam is the maximum distance of the follower from
  2. Torsional vibrations are said to occur when the particles of a body moves
  3. The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain,…
  4. In a hydrodynamic journal bearing, there is
  5. The component of the acceleration, parallel to the velocity of the particle, at the given instant is…
  6. In a Hartnell governor, the lift of the sleeve is given by (where r₁ and r₂ = Max. and…
  7. A typewriter mechanism has 7 numbers of binary joints, six links and none of higher pairs. The mechanism…
  8. Which of the following is an example of a higher pair?
  9. Which of the following is false statement in respect of differences between machine and structure?
  10. The velocity of a flat-faced follower when it has contact with the flank of a circular arc cam, is given…
  11. When the speed of the engine fluctuates continuously above and below the mean speed, the governor is…
  12. TJIE horse power transmitted by a belt is dependent upon
  13. The maximum efficiency of spiral gears is (where θ = Shaft angle, and φ = Friction angle)
  14. Which of the following is a lower pair?
  15. Angle of action of cam is defined as the angle
  16. Crowning on pulleys helps
  17. In a reciprocating engine, usually __________ of the reciprocating masses are balanced.
  18. In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set…
  19. Which one of the following can completely balance several masses revolving in different planes on a…
  20. A pantograph is a mechanism with
  21. The unbalanced force due to reciprocating masses
  22. If D₁ and D₂ be the diameters of driver and driven pulleys, then belt speed is proportional…
  23. For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given…
  24. Which of the following is an inversion of Single slider crank chain?
  25. The pressure angle of a cam depends upon
  26. In a simple train of wheels, the velocity ratio __________ the intermediate wheels.
  27. The sense of Coriolis component is such that it
  28. The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity…
  29. The relative velocity of B with respect to A in a rigid link AB is
  30. For high speed engines, the cam follower should move with