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.
Efficiency of a propeller is defined as the ratio of available power to the engine power which is. . (3). Note, that this definition for efficiency contains the velocity v, which means, that the efficiency approaches zero as the flight speed goes to zero, because the thrust cannot become infinitely large.