Rectifiers and Converters The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ? None of the listed here They are mechanically strong Both of the listed here They do not require any voltage for filament heating None of the listed here They are mechanically strong Both of the listed here They do not require any voltage for filament heating ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following AC. motors is usually used in large motor-generator sets? Slip ring induction motor Synchronous motor Squirrel cage induction motor Any of the listed here Slip ring induction motor Synchronous motor Squirrel cage induction motor Any of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Selenium rectifier can be operated at temperatures as high as 40°C 60°C 75°C 25°C 40°C 60°C 75°C 25°C ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following rectifiers are primarily used for charging of low voltage batteries from AC. supply? Mechanical rectifiers Copper oxide rectifiers Electrolytic rectifiers Selenium rectifiers Mechanical rectifiers Copper oxide rectifiers Electrolytic rectifiers Selenium rectifiers ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters If cathode and anode connections in a mercury arc rectifier are inter changed The rectifier will not operate Both ion and electron streams will move in the same direction Internal losses will be reduced The rectifier will operate at reduced efficiency The rectifier will not operate Both ion and electron streams will move in the same direction Internal losses will be reduced The rectifier will operate at reduced efficiency 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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