Home

In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines,

A. The algebraic sum of the primary forces must be equal to zero

B. The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero

C. Both (A) and (B)

D. None of these

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

You can do it
  1. In under damped vibrating system, the amplitude of vibration
  2. Cylindrical cams can be classified as
  3. If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency…
  4. In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation…
  5. The relation between the controlling force (Fc) and radius of rotation (r) for a stable spring controlled…
  6. Which of the following is used to control the speed variations of the engine caused by the fluctuations…
  7. The instantaneous centres which vary with the configuration of mechanism are called
  8. The acceleration of the particle moving with simple harmonic motion is _________ at the mean position.
  9. Which one of the following is an exact straight line mechanism using lower pairs?
  10. When the addenda on pinion and wheel is such that the path of approach and path of recess are half of…
  11. It is required to connect two parallel shafts, the distance between whose axes is small and variable.…
  12. When a ship travels in a sea, which of the effect is more dangerous
  13. The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m).(dx/dt)…
  14. The velocity of sliding of meshing gear teeth is (Where ω₁ and ω₂ are angular…
  15. A rotor supported at A and B carries two masses as shown in the below figure. The rotor is
  16. A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied…
  17. The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust…
  18. In order to give a complete secondary balance of a multi-cylinder inline engine,
  19. In a screw jack, the effort required to lower the load W is given by
  20. When two pulleys of different diameters are connected by means of an open belt, the angle of contact…
  21. If the controlling force line for a spring controlled governor when produced intersects the Y-axis at…
  22. In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set…
  23. The cam follower generally used in automobile engines is
  24. What is the number of instantaneous centres for an eight link mechanism?
  25. When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be
  26. In a turning moment diagram, the variations of energy above and below the mean resisting torque line…
  27. The advantage of the piston valve over the slide valve is that in the former case
  28. The dynamic friction is the friction experienced by a body, when the body
  29. The cam follower generally used in aircraft engines is
  30. The maximum efficiency of a screw jack is