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- Subject
- Heating and Weldingelectrical-engineering-mcqs › heating-and-welding
- Published
- 17 Dec 2018
- Last updated
- 28 May 2026
Explanation
Temperature control in resistance furnaces can be achieved by changing the resistance, altering the voltage, or by periodically switching the power supply on and off. Therefore, all these methods are used for temperature regulation.
More Heating and Welding MCQs
Practice related questions from the same subject.
- 1.Why is it important for a heating element to have a low temperature coefficient of resistance?
- 2.What is the preferred power factor for running arc furnaces?
- 3.When should the Ajax Wyatt furnace be ignited?
- 4.The radiation emitted by a black body is proportional to which of the following?
- 5.What is the role of a choke in an arc furnace?
- 6.In which process are hysteresis and eddy current losses primarily involved?
- 7.Why is mica utilized in electric presses in terms of its thermal and electrical conductivity?
- 8.When a ferromagnetic material is heated using induction heating, what causes the generation of heat?
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