Corona losses
in DC transmission is :
Minimum
High
Infinite
None of these
Minimum
Corona loss is due to ionization of the air column surrounding the conductor, due to distortion in the electric field pattern around the conductor.
Corona occurs in both A.C. and D.C. In D.C. the critical voltage is greater than that of A.C. and the lossess is less when compared to A.C.
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