Explain qhy ac preferred over direct current for transmission for long time
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Alternating current (AC) is preferred over DC (direct current) for transmission of electric voltage and power over long distances and duration.
Reason is that the losses for transmitting low voltage based electric current over the copper transmission lines are very very large. For transmission it is beneficial to use very high voltage.
High voltage DC is very dangerous. It is very difficult to step up DC voltage to very high voltage and then again step down to the required level. There are losses.
With AC it is easier to step up voltages to very high level, transmit them over long distances and then step down the voltages to usable level. Step up and step down transformers easily do the conversion.
High tension AC transmission results in less transmission losses (and also through heat dissipation).
Reason is that the losses for transmitting low voltage based electric current over the copper transmission lines are very very large. For transmission it is beneficial to use very high voltage.
High voltage DC is very dangerous. It is very difficult to step up DC voltage to very high voltage and then again step down to the required level. There are losses.
With AC it is easier to step up voltages to very high level, transmit them over long distances and then step down the voltages to usable level. Step up and step down transformers easily do the conversion.
High tension AC transmission results in less transmission losses (and also through heat dissipation).
kvnmurty:
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because ac losses it voltage rarely
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