level: power and efficiency
Questions and Answers List
level questions: power and efficiency
| Question | Answer |
|---|---|
| what is the definition of power | the rate at which energy is transferred or the rate at which work is done |
| what are the two equations for power | power = energy transferred (or work done) /time |
| calc | 8000 W |
| calc power of both motors | 12.5 W, 8.3 W |
| what are the equations for efficiency | useful output energy transfer/total input energy transfer useful power output/ total power input |
| calc | 0.05/ 5% |