A. as an insulator
B. as a device for power factor improvement
C. for dielectric heating
D. for induction heating
A. The amount of heat generated can be controlled accurately
B. Heat at very high rate can be gene-rated
C. The area of the surface over which heat is produced can be accurately controlled
D. All of the above
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)
A. copper alloy
B. carbon
C. tungsten alloy
D. stainless steel alloy
A. Optical pyrometer
B. Mercury thermometer
C. Alcohol thermometer
D. Any of the above
A. Arc heating
B. Dielectric heating
C. Induction heating
D. Resistance heating
A. Thermostat
B. Thermocouple
C. Auto-transformer
D. Heating elements of variable resis-tance material