Rectifiers and Converters Mercury, in arc rectifiers, is chosen for cathode because Its boiling point and specific heat are low Its atomic weight is quite high All of the listed here Its ionization potential is relatively low Its boiling point and specific heat are low Its atomic weight is quite high All of the listed here Its ionization potential is relatively low ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The cathdde voltage drop, in a mercury arc rectifier, is due to expenditure of energy in liberating electrons from the mercury surface resistance expenditure of energy in overcoming the electrostatic field expenditure of energy in ionization expenditure of energy in liberating electrons from the mercury surface resistance expenditure of energy in overcoming the electrostatic field expenditure of energy in ionization ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The applications of selenium rectifiers are usually limited to potential of 30 V 20 V 100 V 10 V 30 V 20 V 100 V 10 V ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury arc rectifier______ flow from anode to cathode All of the listed here ions and electrons ions electrons All of the listed here ions and electrons ions electrons ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters With a motor converter it is possible to obtain D.C. voltage only upto 1700-2000 V 200-100 V 600-800 V 1000-1200 V 1700-2000 V 200-100 V 600-800 V 1000-1200 V ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 65 to 75% 80 to 85% 90 to 95% 85 to 90% 65 to 75% 80 to 85% 90 to 95% 85 to 90% ANSWER DOWNLOAD EXAMIANS APP
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