Rectifiers and Converters The internal efficiency of a mercury arc rectifier depends on voltage and current current only r.m.s. value of current voltage only voltage and current current only r.m.s. value of current voltage only ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters If cathode and anode connections in a mercury arc rectifier are inter changed Both ion and electron streams will move in the same direction The rectifier will not operate The rectifier will operate at reduced efficiency Internal losses will be reduced Both ion and electron streams will move in the same direction The rectifier will not operate The rectifier will operate at reduced efficiency Internal losses will be reduced ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters To produce cathode spot in a mercury arc rectifier an auxiliary electrode is used low mercury vapour pressures are used anode is heated tube is evacuated an auxiliary electrode is used low mercury vapour pressures are used anode is heated tube is evacuated ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Selenium rectifier can be operated at temperatures as high as 25°C 75°C 40°C 60°C 25°C 75°C 40°C 60°C ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A synchronous converter can be started from A.C. side as induction motor from D.C. side as D.C. motor All of the listed here by means of a small auxiliary motor from A.C. side as induction motor from D.C. side as D.C. motor All of the listed here by means of a small auxiliary motor 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 voltage regulation of the rectifier should be low The power factor of the system should be high All of the listed here In the output circuit there should be no harmonics The voltage regulation of the rectifier should be low The power factor of the system should be high All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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