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 The metal rectifiers, as compared to mercury arc rectifiers can operate on high voltages operate on low temperatures give poor regulation can operate on heavy loads can operate on high voltages operate on low temperatures give poor regulation can operate on heavy loads 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 Selenium rectifiers Mercury arc rectifiers Mechanical rectifiers Copper oxide rectifiers Selenium rectifiers Mercury arc rectifiers Mechanical rectifiers ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a three-phase mercury arc rectifiers each anode conducts for One-fourth of a cycle One-half a cycle One-third of a cycle Two-third of a cycle One-fourth of a cycle One-half a cycle One-third of a cycle Two-third of a cycle 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 arc drop anode drop and cathode drop cathode drop and arc drop anode drop, cathode drop and arc drop anode drop and arc drop anode drop and cathode drop ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The internal efficiency of a mercury arc rectifier depends on current only voltage and current voltage only r.m.s. value of current current only voltage and current voltage only r.m.s. value of current ANSWER DOWNLOAD EXAMIANS APP
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