Rectifiers and Converters In a mercury arc rectifier characteristic blue luminosity is due to ionization colour of mercury electron streams high temperature ionization colour of mercury electron streams high temperature ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable 40, 50 75, 85 30, 60 20, 30 40, 50 75, 85 30, 60 20, 30 ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters With a motor converter it is possible to obtain D.C. voltage only upto 1000-1200 V 200-100 V 600-800 V 1700-2000 V 1000-1200 V 200-100 V 600-800 V 1700-2000 V ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The cathdde voltage drop, in a mercury arc rectifier, is due to surface resistance expenditure of energy in ionization expenditure of energy in overcoming the electrostatic field expenditure of energy in liberating electrons from the mercury surface resistance expenditure of energy in ionization expenditure of energy in overcoming the electrostatic field expenditure of energy in liberating electrons from the mercury ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The ignited or auxiliary anode in mercury arc rectifier is made of Boron carbide Graphite Copper Aluminium Boron carbide Graphite Copper Aluminium ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters If cathode and anode connections in a mercury arc rectifier are inter changed The rectifier will not operate The rectifier will operate at reduced efficiency Internal losses will be reduced Both ion and electron streams will move in the same direction The rectifier will not operate The rectifier will operate at reduced efficiency Internal losses will be reduced Both ion and electron streams will move in the same direction ANSWER DOWNLOAD EXAMIANS APP
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