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