Rectifiers and Converters When a rectifier is loaded which of the following voltage drops take place ? Voltage drop in transformer reactance Arc voltage drop All of the listed here Voltage drop in resistance of transformer and smoothing chokes Voltage drop in transformer reactance Arc voltage drop All of the listed here Voltage drop in resistance of transformer and smoothing chokes ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In which of the following applications, direct current is absolutely essential ? Illumination Variable speed operation Traction Electrolysis Illumination Variable speed operation Traction Electrolysis ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The ignited or auxiliary anode in mercury arc rectifier is made of Boron carbide Aluminium Graphite Copper Boron carbide Aluminium Graphite Copper ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters To produce cathode spot in a mercury arc rectifier tube is evacuated low mercury vapour pressures are used an auxiliary electrode is used anode is heated tube is evacuated low mercury vapour pressures are used an auxiliary electrode is used anode is heated ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Mercury, in arc rectifiers, is chosen for cathode because All of the listed here Its atomic weight is quite high Its ionization potential is relatively low Its boiling point and specific heat are low All of the listed here Its atomic weight is quite high Its ionization potential is relatively low Its boiling point and specific heat are low ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A rotary converter operates at a low power factor zero power factor high power factor None of the listed here low power factor zero power factor high power factor None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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