Rectifiers and Converters The metal rectifiers, as compared to mercury arc rectifiers can operate on high voltages give poor regulation operate on low temperatures can operate on heavy loads can operate on high voltages give poor regulation operate on low temperatures can operate on heavy loads ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 65 to 75% 90 to 95% 80 to 85% 85 to 90% 65 to 75% 90 to 95% 80 to 85% 85 to 90% ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A rotary converter is a single machine with none of the listed here two armatures and one field one armature and two fields one armature and one field none of the listed here two armatures and one field one armature and two fields one armature and one field ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In which of the following equipment direct current is needed? Telephones Time switches Relay All of the listed here Telephones Time switches Relay All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The potential drop in the arc, in a mercury arc rectifier, varies 0.5 V to 1.5 V per cm length of the arc 2 V to 3.5 V per cm length of the arc 0.05 V to 0.2 V per cm length of the arc none of the listed here 0.5 V to 1.5 V per cm length of the arc 2 V to 3.5 V per cm length of the arc 0.05 V to 0.2 V per cm length of the arc none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In which of the following applications, direct current is absolutely essential ? Variable speed operation Electrolysis Illumination Traction Variable speed operation Electrolysis Illumination Traction ANSWER DOWNLOAD EXAMIANS APP
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