Rectifiers and Converters In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable 75, 85 40, 50 30, 60 20, 30 75, 85 40, 50 30, 60 20, 30 ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The advantage of mercury arc rectifier is that it is light in weight and occupies small floor space it is comparatively noiseless it has high efficiency All of the listed here it is light in weight and occupies small floor space it is comparatively noiseless it has high efficiency All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The metal rectifiers, as compared to mercury arc rectifiers give poor regulation can operate on heavy loads operate on low temperatures can operate on high voltages give poor regulation can operate on heavy loads operate on low temperatures can operate on high voltages 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 Which of the following rectifiers have been used extensively in supplying direct current for electroplating? Mechanical rectifiers Copper oxide rectifiers Mercury arc rectifiers Selenium rectifiers Mechanical rectifiers Copper oxide rectifiers Mercury arc rectifiers Selenium rectifiers ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 90 to 95% 80 to 85% 85 to 90% 65 to 75% 90 to 95% 80 to 85% 85 to 90% 65 to 75% ANSWER DOWNLOAD EXAMIANS APP
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