Rectifiers and Converters Copper oxide rectifier is usually designed not to operate above 75°C 45°C 55°C 30°C 75°C 45°C 55°C 30°C ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The voltage drop between the anode and cathode, of a mercury arc rectifier comprises of the following cathode drop and arc drop anode drop, cathode drop and arc drop anode drop and cathode drop anode drop and arc drop cathode drop and arc drop anode drop, cathode drop and arc drop anode drop and cathode drop anode drop and arc drop ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In which of the following applications, direct current is absolutely essential ? Electrolysis Variable speed operation Traction Illumination Electrolysis Variable speed operation Traction Illumination ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters With a motor converter it is possible to obtain D.C. voltage only upto 1000-1200 V 600-800 V 200-100 V 1700-2000 V 1000-1200 V 600-800 V 200-100 V 1700-2000 V ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following rectifiers are primarily used for charging of low voltage batteries from AC. supply? Copper oxide rectifiers Mechanical rectifiers Selenium rectifiers Electrolytic rectifiers Copper oxide rectifiers Mechanical rectifiers Selenium rectifiers Electrolytic rectifiers ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Ageing of a selenium rectifier may change the output voltage by 25 to 30 per cent None of the listed here 5 to 10 per cent 15 to 20 per cent 25 to 30 per cent None of the listed here 5 to 10 per cent 15 to 20 per cent ANSWER DOWNLOAD EXAMIANS APP
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