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The advantage of the piston valve over the slide valve is that in the former case

A. Wear is less

B. Power absorbed is less

C. Both wear and power absorbed are low

D. The pressure developed being high provides tight sealing

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  1. The instantaneous centre of a rigid thin disc rolling on a plane rigid surface is located at
  2. The radial distance of a tooth from the pitch circle to the bottom of the tooth is called
  3. In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation…
  4. In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative…
  5. A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface.…
  6. When two links are connected by a pin joint, their instantaneous centre lies
  7. For a kinematic chain to be considered as mechanism
  8. The contact ratio for gears is
  9. In gramophones for adjusting the speed of the turntable, the following type of governor is commonly…
  10. The centrifugal tension in belts
  11. In order to give a complete secondary balance of a multi-cylinder inline engine,
  12. The relative velocity of B with respect to A in a rigid link AB is
  13. Which of the following is an inversion of a double slider crank chain?
  14. The primary unbalanced force is maximum _________ in one revolution of the crank.
  15. Transmission of power from the engine to the rear axle of an automobile is by means of
  16. The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is
  17. If D₁ and D₂ be the diameters of driver and driven pulleys, then belt speed is proportional…
  18. The type of gears used to connect two non parallel and non intersecting shafts is
  19. Ackermann steering gear consists of
  20. The factional torque for square thread at the mean radius r while raising load W is given by
  21. The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given…
  22. The acceleration of a particle moving with simple harmonic motion, at any instant is given by
  23. A governor is said to be stable, if the
  24. The arrangement is called bevel gearing, when two __________ are connected by gears.
  25. In a steam engine, one method of obtaining the earlier cut-off with a simple slide valve is by increasing…
  26. A chain comprises of 5 links having 5 joints. Is it kinematic chain?
  27. Whitworth quick return mechanism is obtained by inversion of
  28. In a steam engine, the earlier cut-off with a simple slide valve may be obtained by increasing the steam…
  29. The velocity of the rubbing surface __________ with the distance from the axis of the bearing.
  30. The velocity of a body moving with simple harmonic motion is __________ at the mean position.