Rectifiers and Converters In a three-phase mercury arc rectifiers each anode conducts for One-fourth of a cycle Two-third of a cycle One-third of a cycle One-half a cycle One-fourth of a cycle Two-third of a cycle One-third of a cycle One-half a cycle ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 90 to 95% 85 to 90% 65 to 75% 80 to 85% 90 to 95% 85 to 90% 65 to 75% 80 to 85% ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Copper oxide rectifier is usually designed not to operate above 45°C 55°C 75°C 30°C 45°C 55°C 75°C 30°C ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a grid control of mercury arc rectifiers when the grid is made positive relative to cathode, then it the electrons on their may to anode. decelerates accelerates none of the listed here any of the listed here decelerates accelerates none of the listed here any of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following methods may be used to convert A.C. system to D.C.? All of the listed here Rotary converters Motor converters Rectifiers All of the listed here Rotary converters Motor converters Rectifiers ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following mercury arc rectifier will deliver least undulating current? Three-phase Single-phase Two-phase Six-phase Three-phase Single-phase Two-phase Six-phase ANSWER DOWNLOAD EXAMIANS APP
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