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Hart mechanism has

A. Eight links

B. Six links

C. Four links

D. Twelve links

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  1. The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's…
  2. A spring controlled governor is said to be stable if the controlling force line when produced intersects…
  3. The following is the inversion of slider crank chain mechanism
  4. The maximum efficiency of spiral gears is (where θ = Shaft angle, and φ = Friction angle)
  5. In a ball bearing, ball and bearing forms a
  6. The gears are termed as medium velocity gears, if their peripheral velocity is
  7. In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted…
  8. Cylindrical cams can be classified as
  9. The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass.…
  10. The critical speed of a shaft depends upon its
  11. A rigid body possesses ________degrees of freedom
  12. The relation between the controlling force (Fc) and radius of rotation (r) for a stable spring controlled…
  13. The example of higher pair is
  14. The two elements of a pair are said to form a _________ when they permit relative motion between them.
  15. The dynamic friction is the friction experienced by a body, when the body
  16. 3.The retardation of a flat faced follower when it has contact at the apex of the nose of a circular…
  17. Maximum fluctuation of energy in a flywheel is equal to [where I = Mass moment of inertia of the flywheel,…
  18. In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line…
  19. The component of the acceleration, perpendicular to the velocity of the particle, at the given instant…
  20. In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines,
  21. In order to balance the reciprocating masses,
  22. For low and moderate speed engines, the cam follower should move with
  23. A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved…
  24. For the brake to be self locking, the force P at C shown in the below figure, should
  25. Longitudinal vibrations are said to occur when the particles of a body moves
  26. Which of the following is a higher pair?
  27. The steering of a ship means
  28. The balancing of a rigid rotor can be achieved by appropriately placing balancing masses in
  29. In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation…
  30. Module of a gear is