Rectifiers and Converters Which of the following rectifiers are primarily used for charging of low voltage batteries from AC. supply? Selenium rectifiers Electrolytic rectifiers Mechanical rectifiers Copper oxide rectifiers Selenium rectifiers Electrolytic rectifiers Mechanical rectifiers Copper oxide rectifiers 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 In a rotary converter I2R losses as compared to a D.C. generator of the same size will be Less Remain same None of the listed here More Less Remain same None of the listed here More ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a glass bulb mercury arc rectifier the maximum current rating is restricted to 1500 A 500 A 2000 A 200 A 1500 A 500 A 2000 A 200 A ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The applications of selenium rectifiers are usually limited to potential of 100 V 20 V 30 V 10 V 100 V 20 V 30 V 10 V ANSWER DOWNLOAD EXAMIANS APP
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