Here is what you need to do to allow USB debugging in your phone: 1  If you haven't already, enable developer options on Android (click to view the tutorial how to do it). 2  Go to Settings > Developer options > and check USB debugging. 3  When you see the warning, click OK.
Full Definition of EFFICIENCY. 1. : the quality or degree of being efficient. 2. a: efficient operation b (1) : effective operation as measured by a comparison of production with cost (as in energy, time, and money) (2) : the ratio of the useful energy delivered by a dynamic system to the energy supplied to it. 3.
Mechanical efficiency. Mechanical efficiency, measure of the effectiveness with which a mechanical system performs. It is usually the ratio of the power delivered by a mechanical system to the power supplied to it, and, because of friction, this efficiency is always less than one. For simple machines, such as the lever and the jackscrew, the efficiency is the actual load lifted divided by the theoretical force delivered.