Flexible coupling is used because

A. It is easy to disassemble

B. It is easy to engage and disengage

C. It transmits shocks gradually

D. It prevents shock transmission and eliminates stress reversals

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  1. The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is
  2. A mechanism consisting of four links is called a __________ mechanism.
  3. The natural frequency of free transverse vibrations due to uniformly distributed load acting over a…
  4. Whirling speed of the shaft is the speed at which
  5. Which gear train is used for higher velocity ratios in a small space?
  6. The rotating shafts tend to vibrate violently at whirling speeds because
  7. A rotor supported at A and B carries two masses as shown in the below figure. The rotor is
  8. The centre distance between two meshing involute gears is equal to
  9. The maximum or minimum value of the swaying couple is
  10. Which of the following is used to control the speed variations of the engine caused by the fluctuations…
  11. The velocity of the rubbing surface __________ with the distance from the axis of the bearing.
  12. The contact ratio for gears is
  13. The transmissibility, for all values of damping factor, will be less than unity, if ω/ωn is
  14. The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of…
  15. In under damped vibrating system, the amplitude of vibration
  16. The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing…
  17. The sense of Coriolis component is such that it
  18. When the two elements of a pair have a surface contact when relative motion takes place and the surface…
  19. A completely constrained motion can be transmitted with.
  20. The pressure angle of a cam depends upon
  21. The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness…
  22. The example of lower pair is
  23. If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius…
  24. The maximum fluctuation of speed is the
  25. What is the number of instantaneous centres for an eight link mechanism?
  26. Throw of a cam is the maximum distance of the follower from
  27. The pair is known as a higher pair, when the relative motion between the elements of a pair is
  28. When a body moves with simple harmonic motion, the product of its periodic time and frequency is equal…
  29. The cam follower generally used in automobile engines is
  30. Elements of pairs held together mechanically is known as