Asked in a 2000 paperModerate
In a glass bulb mercury arc rectifier the maximum current rating is restricted to___________?
Correct answer: D. 500 A
- A. 2000 A
- B. 1500 A
- C. 1000 A
- D. 500 A
Explanation
Glass-bulb mercury arc rectifiers are limited by the mechanical and thermal capability of the glass enclosure and are commonly rated up to about 500 A. Higher-current units generally require more robust tank construction.
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