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AC reverses direction and can be converted to lower or higher voltage.
AC reverses direction and can be converted to lower or higher voltage.

AC has distinct advantages over DC, so AC won the War of the Currents.
AC has distinct advantages over DC, so AC won the War of the Currents.

Thomas Edison and Nikola Tesla were competitors.
Thomas Edison and Nikola Tesla were competitors.

By the late 1800s DC was used in the United States.

Answer 1

It seems like you are listing statements regarding alternating current (AC) and direct current (DC) technologies, as well as historical context about Thomas Edison and Nikola Tesla.

Here’s a brief overview and clarification of those points:

1. AC reverses direction and can be converted to lower or higher voltage. - True. Alternating current periodically reverses direction, and it is easily transformed to different voltages using transformers.

2. AC has distinct advantages over DC, so AC won the War of the Currents. - This is also true. AC is generally preferred for long-distance electrical transmission due to its ability to be transformed to higher voltages, which reduces energy loss.

3. Thomas Edison and Nikola Tesla were competitors. - True. Edison favored DC, while Tesla advocated for AC, and they were indeed competitors during the War of the Currents in the late 19th century.

4. By the late 1800s DC was used in the United States. - True. Direct current was the primary form of electric power in the United States before the widespread adoption of AC systems.

If you have any specific questions about these statements or need further information, feel free to ask!

Answer 2

which question is right

Answer 3

Based on the statements provided, all of them are correct:

1. AC reverses direction and can be converted to lower or higher voltage. - True. This statement accurately describes alternating current (AC).

2. AC has distinct advantages over DC, so AC won the War of the Currents. - True. AC does have advantages for long-distance transmission, which is why it became the dominant form of electrical power distribution.

3. Thomas Edison and Nikola Tesla were competitors. - True. Edison and Tesla were indeed rivals in the development of electrical systems, specifically during the War of the Currents.

4. By the late 1800s DC was used in the United States. - True. Direct current (DC) was widely used before AC systems became predominant.

Since all the statements are accurate, if your task is to determine which statements are correct, all of them qualify as "right". If you have a specific question or need further clarification, please let me know!