Rectifiers and Converters Selenium rectifier can be operated at temperatures as high as 40°C 75°C 25°C 60°C 40°C 75°C 25°C 60°C ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A commutating rectifier consists of commutator driven by A synchronous motor A D.C. shunt motor A D.C. series motor An induction motor A synchronous motor A D.C. shunt motor A D.C. series motor An induction motor 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 0.05 V to 0.2 V per cm length of the arc none of the listed here 2 V to 3.5 V per cm length of the arc 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 none of the listed here 2 V to 3.5 V per cm length of the arc ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following mercury arc rectifier will deliver least undulating current? Single-phase Two-phase Six-phase Three-phase Single-phase Two-phase Six-phase Three-phase ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury arc rectifier characteristic blue luminosity is due to ionization high temperature electron streams colour of mercury ionization high temperature electron streams colour of mercury ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Copper oxide rectifier is usually designed not to operate above 30°C 75°C 45°C 55°C 30°C 75°C 45°C 55°C ANSWER DOWNLOAD EXAMIANS APP
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