Rectifiers and Converters The potential drop in the arc, in a mercury arc rectifier, varies 2 V to 3.5 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 0.05 V to 0.2 V per cm length of the arc 2 V to 3.5 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 0.05 V to 0.2 V per cm length of the arc ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters Mercury, in arc rectifiers, is chosen for cathode because Its boiling point and specific heat are low Its atomic weight is quite high All of the listed here Its ionization potential is relatively low Its boiling point and specific heat are low Its atomic weight is quite high All of the listed here Its ionization potential is relatively low ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A synchronous converter can be started by means of a small auxiliary motor All of the listed here from A.C. side as induction motor from D.C. side as D.C. motor by means of a small auxiliary motor All of the listed here from A.C. side as induction motor from D.C. side as D.C. motor ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters When a rectifier is loaded which of the following voltage drops take place ? Arc voltage drop Voltage drop in resistance of transformer and smoothing chokes Voltage drop in transformer reactance All of the listed here Arc voltage drop Voltage drop in resistance of transformer and smoothing chokes Voltage drop in transformer reactance All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable 20, 30 40, 50 30, 60 75, 85 20, 30 40, 50 30, 60 75, 85 ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a phase-shift control method, the phase shift between anode and grid voltages can be achieved by means of Induction regulator Shunt motor Synchronous generator Synchronous motor Induction regulator Shunt motor Synchronous generator Synchronous motor ANSWER DOWNLOAD EXAMIANS APP
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