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英语加物理题第十四题Question14(1mark)Apowerstationdeliversitspowerat33kVdownatransmissionlineconsistingofapairofcables10kmlongwitharesistanceof1.5Ohmseach.Howcouldthetransmissionlossesbeminimized?AIncre
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英语加物理题第十四题
Question 14 (1 mark)
A power station delivers its power at 33 kV down a transmission line consisting of a pair of cables 10km long with a resistance of 1.5 Ohms each.How could the transmission losses be minimized?
A Increase the transmission voltage and the Resistance of the Cables
B Reduce the transmission voltage and the Resistance of the Cables
C Increase the transmission voltage and Reduce the Resistance of the Cables
D None of the other answers
E Reduce the transmission voltage and Increase the Resistance of the Cables
Question 14 (1 mark)
A power station delivers its power at 33 kV down a transmission line consisting of a pair of cables 10km long with a resistance of 1.5 Ohms each.How could the transmission losses be minimized?
A Increase the transmission voltage and the Resistance of the Cables
B Reduce the transmission voltage and the Resistance of the Cables
C Increase the transmission voltage and Reduce the Resistance of the Cables
D None of the other answers
E Reduce the transmission voltage and Increase the Resistance of the Cables
▼优质解答
答案和解析
说的是供电所给10km远的地方供电 如何减少损失功率
损失功率=I*R^2
减小R 加大传送电压 能减少损失功率
答案为:C
损失功率=I*R^2
减小R 加大传送电压 能减少损失功率
答案为:C
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