Rectifiers and Converters In a mercury arc rectifier characteristic blue luminosity is due to electron streams high temperature ionization colour of mercury electron streams high temperature ionization colour of mercury ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury arc rectifier______ flow from anode to cathode ions and electrons All of the listed here electrons ions ions and electrons All of the listed here electrons ions ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable 75, 85 20, 30 40, 50 30, 60 75, 85 20, 30 40, 50 30, 60 ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters If cathode and anode connections in a mercury arc rectifier are inter changed Both ion and electron streams will move in the same direction The rectifier will operate at reduced efficiency Internal losses will be reduced The rectifier will not operate Both ion and electron streams will move in the same direction The rectifier will operate at reduced efficiency Internal losses will be reduced The rectifier will not operate ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a rotary converter armature currents are a.c. only partly a.c. and partly d.c. None of the listed here d.c. only a.c. only partly a.c. and partly d.c. None of the listed here d.c. only ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters When a rectifier is loaded which of the following voltage drops take place ? Arc voltage drop All of the listed here Voltage drop in transformer reactance Voltage drop in resistance of transformer and smoothing chokes Arc voltage drop All of the listed here Voltage drop in transformer reactance Voltage drop in resistance of transformer and smoothing chokes ANSWER DOWNLOAD EXAMIANS APP
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