The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ?
A. They are mechanically strong
B. They do not require any voltage for filament heating
C. Both (A) and (B)
D. None of the above
Answer: Option C
This Question Belongs to Electrical Engineering >> Rectifiers And Converters
In which of the following equipment direct current is needed?
A. Telephones
B. Relays
C. Time switches
D. All of the above
Mercury, in arc rectifiers, is chosen for cathode because
A. Its ionization potential is relatively low
B. Its atomic weight is quite high
C. Its boiling point and specific heat are low
D. All of the above
It is the_______of the transformer on which the magnitude of angle of overlap depends.
A. resistance
B. capacitance
C. leakage reactance
D. any of the above
A. Motor-generator set
B. Motor converter
C. Rotary converter
D. Mercury arc rectifier
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