Rectifiers and Converters In a three-phase mercury arc rectifiers each anode conducts for Two-third of a cycle One-fourth of a cycle One-third of a cycle One-half a cycle Two-third of a cycle One-fourth of a cycle One-third of a cycle One-half a cycle ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The ionization potential of mercury is approximately 5.4 V None of the listed here 16.4 V 10.4 V 5.4 V None of the listed here 16.4 V 10.4 V ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a rotary converter armature currents are partly a.c. and partly d.c. a.c. only None of the listed here d.c. only partly a.c. and partly d.c. a.c. only None of the listed here d.c. only ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In which of the following equipment direct current is needed? All of the listed here Telephones Time switches Relay All of the listed here Telephones Time switches Relay ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The potential drop in the arc, in a mercury arc rectifier, varies 0.05 V to 0.2 V per cm length of the arc none of the listed here 0.5 V to 1.5 V per cm length of the arc 2 V to 3.5 V per cm length of the arc 0.05 V to 0.2 V per cm length of the arc none of the listed here 0.5 V to 1.5 V per cm length of the arc 2 V to 3.5 V per cm length of the arc 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
EXAMIANS