Why Is Alternating Current Preferred for Long-Distance Power Transmission?

In summary, A.C power transmission refers to the use of alternating current to transmit power over long distances. It works by converting electrical energy into a high voltage, which is then transmitted through power lines. A.C power transmission has advantages such as low power loss and the ability to easily change voltage levels, but it also has disadvantages like the need for costly infrastructure and the potential for interference. It differs from D.C power transmission in terms of its strengths and weaknesses, with A.C being better suited for long distance transmission and having lower power loss.
  • #1
Jadaav
175
1
Why is an alternating current used for long distance transmission of electrical power ?

What about direct current ?
 
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  • #2
It is because transformers can be used to transform AC voltage to high voltage to reduce power loss in connecting cables. High voltage means less current for the same power and therefore with highg voltage I^2r losses are reduced.
Transformers can then be used to step down the high voltage to safer values for domestic use.
 

What is A.C for power transmission?

A.C (alternating current) for power transmission refers to the use of alternating electrical current to transmit power over long distances.

How does A.C power transmission work?

A.C power transmission works by converting electrical energy into a high voltage, which is then transmitted through power lines. This high voltage is then converted back to a low voltage for use in homes and businesses.

What are the advantages of A.C power transmission?

A.C power transmission has several advantages, including the ability to transmit power over long distances without significant power loss, the ability to easily change the voltage level for different applications, and the ability to use transformers to increase or decrease voltage.

What are the disadvantages of A.C power transmission?

Some of the disadvantages of A.C power transmission include the need for costly infrastructure such as power lines and transformers, the potential for power loss due to resistance in the power lines, and the possibility of electrical interference with other electronic devices.

How does A.C power transmission compare to D.C power transmission?

A.C and D.C (direct current) power transmission have different strengths and weaknesses. A.C is better suited for long distance transmission due to its ability to easily change voltage levels, while D.C is better for shorter distances and for use in electronic devices. A.C also has lower power loss in transmission compared to D.C.

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