Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 90 to 95% 65 to 75% 80 to 85% 85 to 90% 90 to 95% 65 to 75% 80 to 85% 85 to 90% ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following metals is generally manufactured by electrolysis process? Zinc Copper Aluminium Load Zinc Copper Aluminium Load ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters If cathode and anode connections in a mercury arc rectifier are inter changed The rectifier will operate at reduced efficiency Both ion and electron streams will move in the same direction The rectifier will not operate Internal losses will be reduced The rectifier will operate at reduced efficiency Both ion and electron streams will move in the same direction The rectifier will not operate Internal losses will be reduced ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ? They do not require any voltage for filament heating Both of the listed here They are mechanically strong None of the listed here They do not require any voltage for filament heating Both of the listed here They are mechanically strong None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters To produce cathode spot in a mercury arc rectifier anode is heated low mercury vapour pressures are used tube is evacuated an auxiliary electrode is used anode is heated low mercury vapour pressures are used tube is evacuated an auxiliary electrode is used ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a phase-shift control method, the phase shift between anode and grid voltages can be achieved by means of Synchronous generator Synchronous motor Induction regulator Shunt motor Synchronous generator Synchronous motor Induction regulator Shunt motor ANSWER DOWNLOAD EXAMIANS APP
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