Electric furnaces generating heat via arcs struck between three electrodes and the charge are designated as ____________ furnaces?
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Answer: B. Arc
Explanation
An electric arc furnace generates intense heat using electrical arcs struck between electrodes. Carbon electrodes form electric arcs directly with the metallic charge inside the vessel. This high-intensity thermal radiation melts large quantities of scrap metal very rapidly. Electric arcs create localized temperatures exceeding thousands of degrees Celsius. Three-phase alternating current systems are standard for large industrial steelmaking furnaces. Refractory linings protect the steel shell of the furnace from extreme arc heat.
Electric arc furnaces play a vital role in recycling scrap steel worldwide. Steel foundries use these furnaces to produce specialized alloy and carbon steels. Electrical energy management is critical for controlling high power demand in these plants. Resistance furnaces rely on resistive heating elements rather than direct electric arcs. Low frequency induction furnaces use electromagnetic induction coils to melt metal charges. Option B accurately defines the furnace type utilizing arcs struck between three electrodes.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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