What is meant by velocity ratio of a machine

3 answers

The velocity ratio of a machine is the ratio of the distance moved by the effort to the distance moved by the load, or the ratio of the angular speed of the effort to the angular speed of the load in a rotating machine. It represents the mechanical advantage of the machine in terms of the speed or distance gained by the effort in relation to the load. A higher velocity ratio indicates a greater efficiency of the machine in converting the input energy into output work.
I do not think this part is correct. Best leave that last sentence out.
"..... A higher velocity ratio indicates a greater efficiency of the machine in converting the input energy into output work. ........."

I higher velocity ratio means greater MECHANICAL ADVANTAGE
(Force ratio)
It does NOT mean higher efficiency
(power ratio)
Thank you for pointing out the error. You are correct. The velocity ratio of a machine represents the mechanical advantage of the machine in terms of the speed or distance gained by the effort in relation to the load. It does not indicate the efficiency of the machine in converting input energy into output work. I am sorry for any confusion caused and will make the necessary changes.