Rectifiers and Converters Ageing of a selenium rectifier may change the output voltage by 25 to 30 per cent None of the listed here 5 to 10 per cent 15 to 20 per cent 25 to 30 per cent None of the listed here 5 to 10 per cent 15 to 20 per cent ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The voltage drop at anode, in a mercury arc rectifier is due to self restoring property of mercury energy spent in overcoming the electrostatic field high ionization potential high temperature inside the rectifier self restoring property of mercury energy spent in overcoming the electrostatic field high ionization potential high temperature inside the rectifier ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a glass bulb mercury arc rectifier the maximum current rating is restricted to 1500 A 2000 A 500 A 200 A 1500 A 2000 A 500 A 200 A ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters To produce cathode spot in a mercury arc rectifier an auxiliary electrode is used tube is evacuated anode is heated low mercury vapour pressures are used an auxiliary electrode is used tube is evacuated anode is heated low mercury vapour pressures are used ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury arc rectifier characteristic blue luminosity is due to ionization electron streams colour of mercury high temperature ionization electron streams colour of mercury high temperature ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury arc rectifier, the anode is usually made of aluminium silver graphite copper aluminium silver graphite copper ANSWER DOWNLOAD EXAMIANS APP
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