Rectifiers and Converters In a mercury arc rectifier, the anode is usually made of copper silver graphite aluminium copper silver graphite aluminium ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 90 to 95% 65 to 75% 85 to 90% 80 to 85% 90 to 95% 65 to 75% 85 to 90% 80 to 85% ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following rectifiers have been used extensively in supplying direct current for electroplating? Copper oxide rectifiers Mechanical rectifiers Selenium rectifiers Mercury arc rectifiers Copper oxide rectifiers Mechanical rectifiers Selenium rectifiers Mercury arc rectifiers 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? In the output circuit there should be no harmonics The power factor of the system should be high The voltage regulation of the rectifier should be low All of the listed here In the output circuit there should be no harmonics The power factor of the system should be high The voltage regulation of the rectifier should be low All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters To produce cathode spot in a mercury arc rectifier an auxiliary electrode is used anode is heated low mercury vapour pressures are used tube is evacuated an auxiliary electrode is used anode is heated low mercury vapour pressures are used tube is evacuated ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following are the applications of D.C. system? Arc welding Battery charging work All of the listed here Electrolytic and electro-chemical processes Arc welding Battery charging work All of the listed here Electrolytic and electro-chemical processes ANSWER DOWNLOAD EXAMIANS APP
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