3.Consider a process in which a wind turbine moves an electrical generator is used to produce...
3.Consider a process in which a wind turbine moves an electrical generator is used to produce electrical power, which is then transmitted to your home for use in your electric lawn mower. If mower blade uses 0.16 kWh of mechanical energy to cut your grass, how much wind energy is necessary? DEVICE EFFICIENCY Electric motor 75% Wind turbine 40% Electric generator 88% Electric transmission lines 90% Solar cell 18% Gas auto engine 25%
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3.Consider a process in which a wind turbine moves an electrical
generator is used to produce...
Question 30 6 points Save Answer (LO4) A wind turbine with a 40-m-diameter rotor is rotating...
Question 30 6 points Save Answer (LO4) A wind turbine with a 40-m-diameter rotor is rotating at 21 rpm under steady winds at an average velocity of 14.7 m/s. The electrical power output from the generator is 350 kW. The efficiency of the gearbox is 93% and generator efficiency is 86%. Take the density of air to be 1.013 kg/m. Answer the following questions; use the white paper to work-out your calculations and then choose the correct answer from the...
2. For the ideal Rankine cycle case where the feed pump and turbine are isentropic, and...
2. For the ideal Rankine cycle case where the feed pump and
turbine are isentropic, and the electric motor on the feed pump and
the electric generator are 100% efficient:
a. Determine the specific enthalpy of the refrigerant at the
entry and exit of the feed pump, and the entry and exit of the
turbine; (8 Marks – 2 marks each)
b. Sketch and label the ideal process paths of the cycle on a
T-s diagram, an h-s diagram and...
24. The energy rewed during the splining or 10. Which of the ding material transform fusing...
24. The energy rewed during the splining or 10. Which of the ding material transform fusing of atomic aclelis cecelery to hestene a) Chemical egy by Electrical energy het bell e) Noclear en electrice Heather d) Electric guitar 25. Which of the following appliances changes 31. Which of the following appliances asform electrical energy to und energy! (s) clectrical energy to sound energy Refrigerator motor It Electric guitar a) Cooker b) Guia Il Radio Microwave a) I only d) Electricire...
Industry Code (NAICS) Industry Description 2007 Sales of U.S. Plants ($Million) 2007 Imports from All Countries...
Industry Code (NAICS) Industry Description 2007 Sales of U.S. Plants ($Million) 2007 Imports from All Countries ($million) 2007 Imports from China ($million) 2007 China Share of U.S. Market 1997 Average Hourly Wage of Production Workers ($) 311223 Other oilseed processing 1506.4 3235.4 15.7 10.18 311320 Chocolate & confectionery mfg from cacao beans 4383.5 2001.6 41.2 17.29 311340 Nonchocolate confectionery mfg 5590.7 1455.7 124.6 12.07 311411 Frozen fruit, juice, & vegetable mfg 10618.8 2268.1 99.4 10.22 311711 Seafood canning 978.0 1929.4...
Question 30 6 points Save Answer (LO4) A wind turbine with a 40-m-diameter rotor is rotating at 21 rpm under steady winds at an average velocity of 14.7 m/s. The electrical power output from the generator is 350 kW. The efficiency of the gearbox is 93% and generator efficiency is 86%. Take the density of air to be 1.013 kg/m. Answer the following questions; use the white paper to work-out your calculations and then choose the correct answer from the...
2. For the ideal Rankine cycle case where the feed pump and
turbine are isentropic, and the electric motor on the feed pump and
the electric generator are 100% efficient:
a. Determine the specific enthalpy of the refrigerant at the
entry and exit of the feed pump, and the entry and exit of the
turbine; (8 Marks – 2 marks each)
b. Sketch and label the ideal process paths of the cycle on a
T-s diagram, an h-s diagram and...
24. The energy rewed during the splining or 10. Which of the ding material transform fusing of atomic aclelis cecelery to hestene a) Chemical egy by Electrical energy het bell e) Noclear en electrice Heather d) Electric guitar 25. Which of the following appliances changes 31. Which of the following appliances asform electrical energy to und energy! (s) clectrical energy to sound energy Refrigerator motor It Electric guitar a) Cooker b) Guia Il Radio Microwave a) I only d) Electricire...
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