Q. In a mercury arc rectifier the cathode voltage drop is due to

(A) surface resistance
(B) expenditure of energy in liberating electrons from the mercury
(C) expenditure of energy in ionization
(D) expenditure of energy in overcoming the electrostatic field.

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✅ Correct Answer: (B) expenditure of energy in liberating electrons from the mercury

Published by Mr. Dubey ⭐ 111.42K Points at 15-Sep-2023 12:50 am in Power Electronics

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