Direct arc furnaces have which of the following power factors?
A. Unity
B. Low, lagging
C. Low, leading
D. Any of the above
Answer: Option B
This Question Belongs to Electrical Engineering >> Heating And Welding
Related Questions on Heating and Welding
A. To avoid initial rush of current
B. To avoid change in kW rating with temperature
C. Both (A) and (B)
D. Either (A) or (B)
The material of the heating element for a furnace should have
A. Lower melting point
B. Higher temperature coefficient
C. High specific resistance
D. All of the above
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