Rectifiers and Converters The metal rectifiers, as compared to mercury arc rectifiers 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 operate on low temperatures ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The cathdde voltage drop, in a mercury arc rectifier, is due to expenditure of energy in liberating electrons from the mercury expenditure of energy in overcoming the electrostatic field expenditure of energy in ionization surface resistance expenditure of energy in liberating electrons from the mercury expenditure of energy in overcoming the electrostatic field expenditure of energy in ionization surface resistance ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following methods may be used to convert A.C. system to D.C.? Rectifiers Rotary converters All of the listed here Motor converters Rectifiers Rotary converters All of the listed here Motor converters ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The internal efficiency of a mercury arc rectifier depends on current only r.m.s. value of current voltage only voltage and current current only r.m.s. value of current voltage only voltage and current ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters When a rectifier is loaded which of the following voltage drops take place ? Voltage drop in transformer reactance Voltage drop in resistance of transformer and smoothing chokes All of the listed here Arc voltage drop Voltage drop in transformer reactance Voltage drop in resistance of transformer and smoothing chokes All of the listed here Arc voltage drop ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Copper oxide rectifier is usually designed not to operate above 30°C 55°C 75°C 45°C 30°C 55°C 75°C 45°C ANSWER DOWNLOAD EXAMIANS APP
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