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In a pantograph, all the pairs are

A. Turning pairs

B. Sliding pairs

C. Spherical pairs

D. Self-closed pairs

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  1. The Whitworth quick return motion mechanism is formed in a slider crank chain when the
  2. Which of the following is an example of sliding pair?
  3. The cam and follower is an example of
  4. The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure,…
  5. The maximum fluctuation of speed is the
  6. The critical speed of a shaft depends upon its
  7. A higher pair has__________.
  8. The centre distance between two meshing involute gears is equal to
  9. The essential condition of placing the two masses, so that the system becomes dynamically equivalent,…
  10. Any point on a link connecting double slider crank chain will trace a
  11. The power from the engine to the rear axle of an automobile is transmitted by means of
  12. The example of completely constrained motion is a
  13. If the pressure angle is __________, a reciprocating follower will jam in its bearings.
  14. In a flat collar pivot bearing, the moment due to friction is proportional to
  15. A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the…
  16. The train value of a gear train is
  17. The coefficient of fluctuation of speed is __________ of maximum fluctuation of speed and the mean speed.
  18. For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given…
  19. In gears, interference takes place when
  20. Throw of a cam is the maximum distance of the follower from
  21. The number of links and instantaneous centers in a reciprocating engine mechanism are
  22. The frictional torque transmitted by a cone clutch is same as that of
  23. Pitch point on a cam is
  24. Sense of tangential acceleration of a link
  25. The tractive force is maximum or minimum when the angle of inclination of crank with the line of stroke…
  26. For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimed stroke respectively,…
  27. The frequency of oscillation of a compound pendulum is
  28. In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line…
  29. A typewriter mechanism has 7 numbers of binary joints, six links and none of higher pairs. The mechanism…
  30. A pantograph is a mechanism with