Why AC current preferred over D.C. ?
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because dc is direct current
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The reasons for preferring AC system over DC are as
1.It is easy to maintain and change the voltage of AC electricity for transmission and distribution.
2.Plant cost for AC transmission (circuit breakers, transformers etc.) is much lower than the equivalent DC transmission
3.From power stations, AC is produced so it is better to use AC than DC instead of converting it.
4.When a large fault occurs in a network, it is easier to interrupt in an AC system, as the sine wave current will naturally tend to zero at some point making the current easier to interrupt.
5.It is easier to convert AC to DC rather than the other way around.
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1.It is easy to maintain and change the voltage of AC electricity for transmission and distribution.
2.Plant cost for AC transmission (circuit breakers, transformers etc.) is much lower than the equivalent DC transmission
3.From power stations, AC is produced so it is better to use AC than DC instead of converting it.
4.When a large fault occurs in a network, it is easier to interrupt in an AC system, as the sine wave current will naturally tend to zero at some point making the current easier to interrupt.
5.It is easier to convert AC to DC rather than the other way around.
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