Rectifiers and Converters In which of the following equipment direct current is needed? Relay Time switches Telephones All of the listed here Relay Time switches Telephones All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable 20, 30 30, 60 75, 85 40, 50 20, 30 30, 60 75, 85 40, 50 ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The potential drop in the arc, in a mercury arc rectifier, varies 0.05 V to 0.2 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 2 V to 3.5 V per cm length of the arc 0.05 V to 0.2 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 2 V to 3.5 V per cm length of the arc ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters With a motor converter it is possible to obtain D.C. voltage only upto 200-100 V 1700-2000 V 1000-1200 V 600-800 V 200-100 V 1700-2000 V 1000-1200 V 600-800 V ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Glass rectifiers are usually made into units capable of D.C. output (maximum continuous rating) of 300 A at 300 V 100 A at 100 V 500 A at 500 V 400 A at 400 V 300 A at 300 V 100 A at 100 V 500 A at 500 V 400 A at 400 V ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters If cathode and anode connections in a mercury arc rectifier are inter changed 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 Both ion and electron streams will move in the same direction The rectifier will operate at reduced efficiency ANSWER DOWNLOAD EXAMIANS APP
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