A non-dimensional number generally associated with natural convection heat transfer is
A. Prandtl number
B. Grashoff number
C. Peclet number
D. Nusselt number
Answer: Option B
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
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