Rectifiers and Converters In a three-phase mercury arc rectifiers each anode conducts for One-third of a cycle One-fourth of a cycle One-half a cycle Two-third of a cycle One-third of a cycle One-fourth of a cycle One-half a cycle Two-third of a cycle ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a mercury arc rectifier characteristic blue luminosity is due to ionization colour of mercury electron streams high temperature ionization colour of mercury electron streams high temperature ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The efficiency of the copper oxide rectifier seldom exceeds 90 to 95% 80 to 85% 65 to 75% 85 to 90% 90 to 95% 80 to 85% 65 to 75% 85 to 90% ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The voltage drop at anode, in a mercury arc rectifier is due to energy spent in overcoming the electrostatic field high ionization potential high temperature inside the rectifier self restoring property of mercury energy spent in overcoming the electrostatic field high ionization potential high temperature inside the rectifier self restoring property of mercury 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 A commutating rectifier consists of commutator driven by A synchronous motor An induction motor A D.C. series motor A D.C. shunt motor A synchronous motor An induction motor A D.C. series motor A D.C. shunt motor ANSWER DOWNLOAD EXAMIANS APP
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