Which method of machine actuation provides the highest degre

Which method of machine actuation provides the highest degree of safety reliability and why?

Solution

>> Mechanical Actutation, provides the highest degree of safety reliability

It is so because, in every other method, there is some danger of leaking like, oil on hydraulic, pressure loss in pneumatic, electric shocks in electrical, etc.

While, Mechanical Actuation is just based on the combination of linkages, thus providing more safety.