By the use of which of the following, high frequency power supply for induction furnaces can be obtained ?
		A. Coreless transformers
B. Current transformers
C. Motor-generator set
D. Multi-phase transformer
		A. Coreless transformers
B. Current transformers
C. Motor-generator set
D. Multi-phase transformer
		A. arc heating
B. resistance heating
C. induction heating
D. dielectric heating
		A. it is filled below core level
B. it is filled above core level
C. it is fully empty
D. none of the above
		A. Current
B. Voltage
C. Power factor
D. All of the above
		A. induced current flow through the charge
B. hysteresis loss taking place below curie temperature
C. due to hysteresis loss as well as eddy current loss takingplace in the charge
D. none of the above factors
		A. transmits all incident radiations
B. absorbs all incident radiations
C. reflects all incident radiations
D. absorbs, reflects and transmits all incident radiations
		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