what is meant by mechanical drive?

Question

espex · Answer

It varies depending on the context, but in general it is something maintained in motion by a mechanical force. Not to be confused with a magnetic drive that uses a magnetic force to propel the object.

koikkara · Answer

@elan6888 Welcome to Open Study Buddy...

Hmm, presently I'm undergoing a training at Kochin Refinery, India. Well, to my knowledge it is used mainly in the oil and gas industry, mechanical drive gas turbines provide a reliable and efficient power source to run various machines and applications, even in the most aggressive environments. 

Well, @eSpeX already had a smart answer.
Thank You