Answer / sparta

it is difficult to convert high voltage dc to ac system.
it is expensive to convert dc into ac.

Answer / anand mishra

first thing is that it is very epensive.absorb reactive power.produces harmonics which may interfer audio frecuency(communication system).and the filters which are used to reduce harmonics are also expensive

Answer / mahesh v p

very difficult to convert high voltage dc to ac,and is also
expensive.

Answer / bcd

1.insulation required is more
2.terminal apparatus(CB etc.) used for hvdc is costly

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