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Rectifiers and Converters - Interview Questions and Answers

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6. The voltage drop at anode, in a mercury arc rectifier is due to
A. self restoring property of mercury
B. high ionization potential
C. energy spent in overcoming the electrostatic field
D. high temperature inside the rectifier
Explanation:
7. In a mercury pool rectifier, the voltage drop across its electrodes
A. is directly proportional to load
B. is inversely proportional to load
C. varies exponentially with the load current
D. is almost independent of load current
Explanation:
8. Glass rectifiers are usually made into units capable of D.C. output (maximum continuous rating) of
A. 200 A at 200 V
B. 300 A at 300 V
C. 400 A at 400 V
D. 500 A at 500 V
Explanation:
9. Which of the following metals is generally manufactured by electrolysis process ?
A. Load
B. Aluminium
C. Copper
D. Zinc
Explanation:
10. The cathdde voltage drop, in a mercury arc rectifier, is due to
A. expenditure of energy in ionization
B. surface resistance
C. expenditure of energy in overcoming the electrostatic field
D. expenditure of energy in liberating electrons from the mercury
Explanation:
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