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Unformatted text preview: (a) 0 (b) A (c) - A (d) - B (e) none of these P V 1 2 3 4 A B Name__________________________________________ 2 3. Consider two portable electricity generators with output electric power of 10 kW. Each portable generator consists of a diesel engine and electric generator. The first generator has a diesel engine efficiency of 0.4 and an electric generator efficiency of 0.8. The second generator has a diesel engine efficiency of 0.3 and electric generator efficiency of 0.95. Compare the overall electricity generation efficiencies of the systems and the rates of heat dissipation to the environment. (a) 2 1 < (b) 2 1 > (c) 2 1 = (15 points) (b) 2 1 Q Q & & < (b) 2 1 Q Q & & > (c) 2 1 Q Q & & = (15 points) 4. (20 points). An ideal nozzle is designed to produce output velocity of 100 m/s. What will be the approximate output velocity for 80% efficient nozzle? (a) 89 m/s (b) 64 m/s (c) 80 m/s (d) none of these...
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- Spring '08