In the indirect resistance heating method, maximum heat-transfer takes place by____________?
Correct answer: A. radiation
- A. radiation
- B. convection
- C. conduction
- D. any of the above
Explanation
In indirect resistance heating, the element heats the charge without direct electrical contact, and radiation is usually the dominant transfer mode at furnace temperatures. Convection and conduction can also occur, but they are generally secondary.
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