Rectifiers and Converters In a mercury arc rectifier characteristic blue luminosity is due to high temperature ionization electron streams colour of mercury high temperature ionization electron streams colour of mercury ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 90 to 95% 85 to 90% 80 to 85% 65 to 75% 90 to 95% 85 to 90% 80 to 85% 65 to 75% ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A mercury arc rectifier possesses ________ regulation characteristics curved line straight line none of the listed here exponential curved line straight line none of the listed here exponential ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following rectifiers are primarily used for charging of low voltage batteries from AC. supply? Selenium rectifiers Copper oxide rectifiers Mechanical rectifiers Electrolytic rectifiers Selenium rectifiers Copper oxide rectifiers Mechanical rectifiers Electrolytic rectifiers ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters With a motor converter it is possible to obtain D.C. voltage only upto 600-800 V 200-100 V 1700-2000 V 1000-1200 V 600-800 V 200-100 V 1700-2000 V 1000-1200 V ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following mercury arc rectifier will deliver least undulating current? Single-phase Three-phase Six-phase Two-phase Single-phase Three-phase Six-phase Two-phase ANSWER DOWNLOAD EXAMIANS APP
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