A. arc heating
B. resistance heating
C. induction heating
D. dielectric heating
A. Heat treatment of castings
B. Heating of insulators
C. Melting aluminium
D. None of the above
A. Heat loss through furnace wall will increase
B. Temperature inside the furnace will fall
C. Temperature on the outer surface of furnace walls will drop
D. Energy consumption will increase
A. Prandtl number
B. Grashoff number
C. Pecelet number
D. Nusselt number
A. Thermal ion release principle
B. Nucleate heating principle
C. Resistance heating principle
D. Electro-magnetic induction princi¬ple
A. ablation
B. radiation
C. viscous dissipation
D. irradiation
A. nickel copper
B. nichrome
C. silicon carbide
D. silver
A. reduce the length of heating element
B. increase the life of the heating element
C. reduce the effect of oxidation
D. produce large amount of heat
A. radiation
B. convection
C. conduction
D. any of the above
A. Indirect arc furnace
B. Core less furnace
C. Either of the above
D. None of the above