A. bad, good
B. bad, bad
C. good, bad
D. good, good
A. induction heating of steel
B. dielectric heating
C. induction heating of brass
D. resistance heating
A. By disconnecting some of the heating elements
B. By varying the operating voltage
C. By varying the current through heating elements
D. By any of the above method
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. as an insulator
B. as a device for power factor improvement
C. for dielectric heating
D. for induction heating
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. Coreless transformers
B. Current transformers
C. Motor-generator set
D. Multi-phase transformer