Rectifiers and Converters The voltage drop between the anode and cathode, of a mercury arc rectifier comprises of the following anode drop, cathode drop and arc drop anode drop and cathode drop cathode drop and arc drop anode drop and arc drop anode drop, cathode drop and arc drop anode drop and cathode drop cathode drop and arc drop anode drop and arc drop 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 Electrolytic rectifiers Mechanical rectifiers Selenium rectifiers Copper oxide rectifiers Electrolytic rectifiers Mechanical rectifiers Selenium rectifiers ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 85 to 90% 90 to 95% 65 to 75% 80 to 85% 85 to 90% 90 to 95% 65 to 75% 80 to 85% 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 More Less Remain same None of the listed here More Less Remain same None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Ageing of a selenium rectifier may change the output voltage by 15 to 20 per cent 25 to 30 per cent 5 to 10 per cent None of the listed here 15 to 20 per cent 25 to 30 per cent 5 to 10 per cent None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Mercury, in arc rectifiers, is chosen for cathode because Its boiling point and specific heat are low Its ionization potential is relatively low All of the listed here Its atomic weight is quite high Its boiling point and specific heat are low Its ionization potential is relatively low All of the listed here Its atomic weight is quite high ANSWER DOWNLOAD EXAMIANS APP
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