Rectifiers and Converters Which of the following rectifiers are primarily used for charging of low voltage batteries from AC. supply? Copper oxide rectifiers Mechanical rectifiers Electrolytic rectifiers Selenium rectifiers Copper oxide rectifiers Mechanical rectifiers Electrolytic rectifiers Selenium rectifiers ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The internal efficiency of a mercury arc rectifier depends on voltage only r.m.s. value of current current only voltage and current voltage only r.m.s. value of current current only voltage and current ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The metal rectifiers, as compared to mercury arc rectifiers can operate on high voltages can operate on heavy loads give poor regulation operate on low temperatures can operate on high voltages can operate on heavy loads give poor regulation operate on low temperatures 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 phase magnitude polarity All of the listed here phase magnitude ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The voltage drop at anode, in a mercury arc rectifier is due to high ionization potential high temperature inside the rectifier energy spent in overcoming the electrostatic field self restoring property of mercury high ionization potential high temperature inside the rectifier energy spent in overcoming the electrostatic field self restoring property of mercury ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Which of the following mercury arc rectifier will deliver least undulating current? Two-phase Single-phase Three-phase Six-phase Two-phase Single-phase Three-phase Six-phase ANSWER DOWNLOAD EXAMIANS APP
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