Rectifiers and Converters In a mercury arc rectifier characteristic blue luminosity is due to high temperature electron streams colour of mercury ionization high temperature electron streams colour of mercury ionization ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a grid control of mercury arc rectifiers when the grid is made positive relative to cathode, then it the electrons on their may to anode. none of the listed here any of the listed here decelerates accelerates none of the listed here any of the listed here decelerates accelerates ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In which of the following applications, direct current is absolutely essential ? Variable speed operation Illumination Electrolysis Traction Variable speed operation Illumination Electrolysis Traction ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The voltage drop between the anode and cathode, of a mercury arc rectifier comprises of the following anode drop and arc drop anode drop and cathode drop anode drop, cathode drop and arc drop cathode drop and arc drop anode drop and arc drop anode drop and cathode drop anode drop, cathode drop and arc drop cathode drop and arc drop ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 85 to 90% 65 to 75% 90 to 95% 80 to 85% 85 to 90% 65 to 75% 90 to 95% 80 to 85% ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Ageing of a selenium rectifier may change the output voltage by None of the listed here 15 to 20 per cent 5 to 10 per cent 25 to 30 per cent None of the listed here 15 to 20 per cent 5 to 10 per cent 25 to 30 per cent ANSWER DOWNLOAD EXAMIANS APP
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