Rectifiers and Converters Ageing of a selenium rectifier may change the output voltage by 15 to 20 per cent 5 to 10 per cent None of the listed here 25 to 30 per cent 15 to 20 per cent 5 to 10 per cent None of the listed here 25 to 30 per cent ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters A rotary converter operates at a high power factor zero power factor None of the listed here low power factor high power factor zero power factor None of the listed here low power factor 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 Both of the listed here They do not require any voltage for filament heating None of the listed here They are mechanically strong Both of the listed here They do not require any voltage for filament heating None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters In a glass bulb mercury arc rectifier the maximum current rating is restricted to 200 A 1500 A 500 A 2000 A 200 A 1500 A 500 A 2000 A 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 ionization potential is relatively low All of the listed here Its atomic weight is quite high Its boiling point and specific heat are low Its ionization potential is relatively low All of the listed here Its atomic weight is quite high ANSWER DOWNLOAD EXAMIANS APP
Rectifiers and Converters It is the_______of the transformer on which the magnitude of angle of overlap depends. leakage reactance resistance capacitance all of the listed here leakage reactance resistance capacitance all of the listed here ANSWER DOWNLOAD EXAMIANS APP
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