Rectifiers and Converters The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ? They do not require any voltage for filament heating None of the listed here Both of the listed here They are mechanically strong They do not require any voltage for filament heating None of the listed here Both of the listed here They are mechanically strong ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as maximum grid voltage critical grid voltage all of the listed here non of the listed here maximum grid voltage critical grid voltage all of the listed here non of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The internal efficiency of a mercury arc rectifier depends on voltage only voltage and current r.m.s. value of current current only voltage only voltage and current r.m.s. value of current current only ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury pool rectifier, the voltage drop across its electrodes varies exponentially with the load current is almost independent of load current is inversely proportional to load is directly proportional to load varies exponentially with the load current is almost independent of load current is inversely proportional to load is directly proportional to load ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The metal rectifiers, as compared to mercury arc rectifiers operate on low temperatures can operate on heavy loads give poor regulation can operate on high voltages operate on low temperatures can operate on heavy loads give poor regulation can operate on high voltages ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following rectifiers have been used extensively in supplying direct current for electroplating? Mechanical rectifiers Copper oxide rectifiers Mercury arc rectifiers Selenium rectifiers Mechanical rectifiers Copper oxide rectifiers Mercury arc rectifiers Selenium rectifiers ANSWER DOWNLOAD EXAMIANS APP
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