To produce cathode spot in a mercury arc rectifier Options: A . &nbspanode is heated B . &nbsptube is evacuated C . &nbspan auxiliary electrode is used D . &nbsplow mercury vapour pressures are used

To produce cathode spot in a mercury arc rectifier

Question - To produce cathode spot in a mercury arc rectifier

Options:

A . anode is heated

B . tube is evacuated

C . an auxiliary electrode is used

D . low mercury vapour pressures are used

Answer: Option C

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