Heat is transferred simultaneously by condition, convection and radiation
A. Inside boiler furnaces
B. During melting of ice
C. Through the surface of the insulted pipe carrying steam
D. From refrigerator coils to freezer of a refrigerator
Answer: Option A
This Question Belongs to Electrical Engineering >> Heating And Welding
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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
In induction heating __________ is abnormally high.
A. Phase angle
B. Frequency
C. Current
D. Voltage
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