Rectifiers and Converters Which of the following mercury arc rectifier will deliver least undulating current? Six-phase Two-phase Three-phase Single-phase Six-phase Two-phase Three-phase Single-phase ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 65 to 75% 90 to 95% 85 to 90% 80 to 85% 65 to 75% 90 to 95% 85 to 90% 80 to 85% ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters On which of the following factors the number of phases for which a rectifier should be designed depends? In the output circuit there should be no harmonics The power factor of the system should be high The voltage regulation of the rectifier should be low All of the listed here In the output circuit there should be no harmonics The power factor of the system should be high The voltage regulation of the rectifier should be low All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The internal efficiency of a mercury arc rectifier depends on voltage and current r.m.s. value of current current only voltage only voltage and current r.m.s. value of current current only voltage only ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following is the loss within the mercury arc rectifier chamber? Voltage drop in arc Voltage drop at the anode Voltage drop at the cathode All of the listed here Voltage drop in arc Voltage drop at the anode Voltage drop at the cathode All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The cathdde voltage drop, in a mercury arc rectifier, is due to expenditure of energy in liberating electrons from the mercury surface resistance expenditure of energy in ionization expenditure of energy in overcoming the electrostatic field expenditure of energy in liberating electrons from the mercury surface resistance expenditure of energy in ionization expenditure of energy in overcoming the electrostatic field ANSWER DOWNLOAD EXAMIANS APP
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