McqMate
Q. |
In a mercury arc rectifier the cathode voltage drop is due to |
A. | surface resistance |
B. | expenditure of energy in liberating electrons from the mercury |
C. | expenditure of energy in ionization |
D. | expenditure of energy in overcoming the electrostatic field. |
Answer» B. expenditure of energy in liberating electrons from the mercury |
View all MCQs in
Power ElectronicsNo comments yet