Rectifiers and Converters Mercury, in arc rectifiers, is chosen for cathode because All of the listed here Its atomic weight is quite high Its ionization potential is relatively low Its boiling point and specific heat are low All of the listed here Its atomic weight is quite high Its ionization potential is relatively low Its boiling point and specific heat are low ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In selenium rectifiers efficiencies ranging from ______ to ______ percent are attainable 20, 30 75, 85 30, 60 40, 50 20, 30 75, 85 30, 60 40, 50 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 Synchronous generator Shunt motor Synchronous motor Induction regulator Synchronous generator Shunt motor Synchronous motor Induction regulator ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ? They are mechanically strong They do not require any voltage for filament heating None of the listed here Both of the listed here They are mechanically strong They do not require any voltage for filament heating None of the listed here Both of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A rotary converter is a single machine with one armature and one field two armatures and one field none of the listed here one armature and two fields one armature and one field two armatures and one field none of the listed here one armature and two fields ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters The ionization potential of mercury is approximately None of the listed here 5.4 V 10.4 V 16.4 V None of the listed here 5.4 V 10.4 V 16.4 V ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS