Rectifiers and Converters Normally, which of the following is used, when a large-scale conversion from AC. to D.C. power is required? Motor-generator set Mercury arc rectifier Rotary converter Motor converter Motor-generator set Mercury arc rectifier Rotary converter Motor converter ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The ignited or auxiliary anode in mercury arc rectifier is made of Aluminium Copper Boron carbide Graphite Aluminium Copper Boron carbide Graphite ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ? None of the listed here They are mechanically strong They do not require any voltage for filament heating Both of the listed here None of the listed here They are mechanically strong They do not require any voltage for filament heating Both of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The potential drop in the arc, in a mercury arc rectifier, varies 0.05 V to 0.2 V per cm length of the arc 2 V to 3.5 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 0.05 V to 0.2 V per cm length of the arc 2 V to 3.5 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 ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters To produce cathode spot in a mercury arc rectifier an auxiliary electrode is used tube is evacuated anode is heated low mercury vapour pressures are used an auxiliary electrode is used tube is evacuated anode is heated low mercury vapour pressures are used ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a glass bulb mercury arc rectifier the maximum current rating is restricted to 1500 A 200 A 2000 A 500 A 1500 A 200 A 2000 A 500 A ANSWER DOWNLOAD EXAMIANS APP
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