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Which of the following is an open pair?

A. Ball and socket joint

B. Journal bearing

C. Lead screw and nut

D. Cam and follower

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  1. The size of cam depends upon
  2. Cylindrical cams can be classified as
  3. The fundamental equation for correct steering is (where φ and α = Angle through which the…
  4. A spring controlled governor is found unstable. It can be made stable by
  5. The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left…
  6. For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given…
  7. The relation l = (2/3).(j + 2) apply only to kinematic chains in which lower pairs are used. This may…
  8. The ratio of the number of teeth to the pitch circle diameter in millimetres, is called
  9. The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness…
  10. Peaucelliers mechanism has
  11. In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation…
  12. For high speed engines, the cam follower should move with
  13. A body in motion will be subjected to coriolis acceleration when that body is
  14. A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of…
  15. Which of the following disciplines provides study of relative motion between the parts of a machine?
  16. In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative…
  17. The equation of motion for a single degree of freedom system with viscous damping is 4(dx²/dt²)…
  18. Typewriter constitutes
  19. A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration…
  20. The transmissibility, for all values of damping factor, will be less than unity, if ω/ωn is
  21. The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because
  22. The primary unbalanced force is maximum _________ in one revolution of the crank.
  23. The frictional torque transmitted in a conical pivot bearing with assumption of uniform pressure is…
  24. The sense of coriolis component 2 ωv is same as that of the relative velocity vector v rotated…
  25. The periodic time of one oscillation for a simple pendulum is
  26. The frictional torque transmitted by a disc or plate clutch is same as that of
  27. The maximum fluctuation of speed is the
  28. The D-slide valve is also known as
  29. When the body is suspended at the point of suspension, its periodic time and frequency will be ________…
  30. Which of the following disciplines provides study of the relative motion between the parts of a machine…