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I CLASS DISCUSSION ITEM 2.5 International AC In European countries, the household AC signal is 220 V at 50 Hz. What effect does this have on electrical devices such as an electric razor purchased in the United States but used in these countries?

I CLASS DISCUSSION ITEM 2.5 International AC In European countries, the household AC signal is 220 V at 50 Hz. What effect does this have on electrical devices such as an electric razor purchased in the United States but used in these countries?

Power System Analysis and Design (MindTap Course List)
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.39P
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I CLASS DISCUSSION ITEM 2.5 International AC In European countries, the household AC signal is 220 Vmg at 50 Hz. What effect does this have on electrical devices such as an electric razor purchased in the United States but used in these countries?
Transcribed Image Text:I CLASS DISCUSSION ITEM 2.5 International AC In European countries, the household AC signal is 220 Vmg at 50 Hz. What effect does this have on electrical devices such as an electric razor purchased in the United States but used in these countries?
I CLASS DISCUSSION ITEM 2.4 Transmission Line Losses When power is transmitted from power plants over large distances, high- voltage lines are used. Transformers (see Section 2.8) are used to change volt- age levels both before and after transmission. Because current is lower at the higher voltage, less power is lost during the transmission, based on the middle expression for power in Equation 2.65. But doesn't the last expression imply that more power is lost at a higher voltage? How do you explain this apparent discrepancy?
Transcribed Image Text:I CLASS DISCUSSION ITEM 2.4 Transmission Line Losses When power is transmitted from power plants over large distances, high- voltage lines are used. Transformers (see Section 2.8) are used to change volt- age levels both before and after transmission. Because current is lower at the higher voltage, less power is lost during the transmission, based on the middle expression for power in Equation 2.65. But doesn't the last expression imply that more power is lost at a higher voltage? How do you explain this apparent discrepancy?
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