An example of indirectly heated furnace is the_________________?
Correct answer: B. Muffle furnace
- A. Soaking pit
- B. Muffle furnace
- C. Reheating furnace
- D. None of these
Explanation
A muffle furnace heats the charge indirectly through a separate refractory chamber, so combustion gases or the heating elements do not contact the material. Soaking and reheating furnaces normally heat the stock directly by furnace gases and radiation.
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