Rectifiers and Converters In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as maximum grid voltage non of the listed here all of the listed here critical grid voltage maximum grid voltage non of the listed here all of the listed here critical grid voltage ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury arc rectifier______ flow from anode to cathode electrons All of the listed here ions ions and electrons electrons All of the listed here ions ions and 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 600-800 V 1000-1200 V 200-100 V 1700-2000 V 600-800 V 1000-1200 V 200-100 V ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The potential drop in the arc, in a mercury arc rectifier, varies none of the listed here 0.5 V to 1.5 V per cm length of the arc 0.05 V to 0.2 V per cm length of the arc 2 V to 3.5 V per cm length of the arc none of the listed here 0.5 V to 1.5 V per cm length of the arc 0.05 V to 0.2 V per cm length of the arc 2 V to 3.5 V per cm length of the arc ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Copper oxide rectifier is usually designed not to operate above 55°C 45°C 75°C 30°C 55°C 45°C 75°C 30°C ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 80 to 85% 65 to 75% 85 to 90% 90 to 95% 80 to 85% 65 to 75% 85 to 90% 90 to 95% ANSWER DOWNLOAD EXAMIANS APP
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