Due to which of the following reasons it is desirable to have short arc length ?
Correct answer: E. All of the above
- A. To achieve better heating
- B. To increase the life of roof refractory
- C. To have better stirring action
- D. To reduce problem of oxidation
- E. All of the above
Explanation
A short arc concentrates heat near the charge, reduces radiation toward the roof, limits refractory damage and oxidation, and supports effective furnace operation. These combined benefits make all the listed reasons applicable.
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