Rectifiers and Converters In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable 40, 50 30, 60 75, 85 20, 30 40, 50 30, 60 75, 85 20, 30 ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In phase-shift control method the control is carried out by varying the of grid voltage. polarity All of the listed here magnitude phase polarity All of the listed here magnitude phase ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The ignited or auxiliary anode in mercury arc rectifier is made of Graphite Copper Boron carbide Aluminium Graphite Copper Boron carbide Aluminium ANSWER DOWNLOAD EXAMIANS APP
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 maximum grid voltage 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 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 which of the following equipment direct current is needed? Relay All of the listed here Telephones Time switches Relay All of the listed here Telephones Time switches ANSWER DOWNLOAD EXAMIANS APP
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