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UNIT 7: Inducing Current BCLN PHYSICS 12 - Rev. Apr, 2019 Part 3: Mastery 1. The hydro-electric energy produced by a dam has been engineered to be very efficient. What, in terms of physics, is meant when we say that a hydroelectric dam is 90% efficient? What quantities must be measured and compared? The hydroelectric dom is 90/ efficent which means that 90 % of the total energy is converted to electricity and the Remaining lof is wasted as beat energy In order to quantities to be measured and composed, the efficency is calculated from measure of input and output energy. . Examine your "story" of energy production from the Expert section above. Outline three key transitions where energy would be lost significantly. Rank these three choices from greatest loss of energy to least loss in the table below. Then outline the equations involved at each point, and how you would improve the efficiency. Be sure to reference your equations and how they would be affected by your improvements. Transition Rank: Equations Involved: Design Changes to Improve Efficiency: (from largest loss in energy to smallest loss) 1. 2 . 3. In order to improve efficiency, the temperature difference would need to be increased, Page 10 of 10