Rectifiers and Converters Which of the following rectifiers have been used extensively in supplying direct current for electroplating? Copper oxide rectifiers Mechanical rectifiers Mercury arc rectifiers Selenium rectifiers Copper oxide rectifiers Mechanical rectifiers Mercury arc rectifiers Selenium rectifiers ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Ageing of a selenium rectifier may change the output voltage by 5 to 10 per cent None of the listed here 25 to 30 per cent 15 to 20 per cent 5 to 10 per cent None of the listed here 25 to 30 per cent 15 to 20 per cent ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury arc rectifier positive ions are attracted towards shell bottom cathode mercury pool anode shell bottom cathode mercury pool anode ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The internal efficiency of a mercury arc rectifier depends on current only voltage only r.m.s. value of current voltage and current current only voltage only r.m.s. value of current voltage and current ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A rotary converter combines the function of a synchronous motor and a D.C. generator None of the listed here Both of the listed here an induction motor and a D.C. generator a synchronous motor and a D.C. generator None of the listed here Both of the listed here an induction motor and a D.C. generator ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters On which of the following factors the number of phases for which a rectifier should be designed depends? All of the listed here The power factor of the system should be high In the output circuit there should be no harmonics The voltage regulation of the rectifier should be low All of the listed here The power factor of the system should be high In the output circuit there should be no harmonics The voltage regulation of the rectifier should be low ANSWER DOWNLOAD EXAMIANS APP
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