Rectifiers and Converters In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as critical grid voltage non of the listed here all of the listed here maximum grid voltage critical grid voltage non of the listed here all of the listed here maximum grid voltage ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following mercury arc rectifier will deliver least undulating current? Single-phase Three-phase Two-phase Six-phase Single-phase Three-phase Two-phase Six-phase 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
Rectifiers and Converters The applications of selenium rectifiers are usually limited to potential of 20 V 10 V 30 V 100 V 20 V 10 V 30 V 100 V ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A commutating rectifier consists of commutator driven by A D.C. series motor A D.C. shunt motor An induction motor A synchronous motor A D.C. series motor A D.C. shunt motor An induction motor A synchronous motor ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters If cathode and anode connections in a mercury arc rectifier are inter changed Internal losses will be reduced The rectifier will operate at reduced efficiency The rectifier will not operate Both ion and electron streams will move in the same direction Internal losses will be reduced The rectifier will operate at reduced efficiency The rectifier will not operate Both ion and electron streams will move in the same direction ANSWER DOWNLOAD EXAMIANS APP
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