A. Annealing of metals
B. Melting of ferrous metals
C. Heating of liquids in electric kettle
D. Drying of paints and varnishes
A. series
B. parallel
C. series-parallel connections
D. star-delta connections
E. all of the above ways
A. To achieve better heating
B. To increase the life of roof refractory
C. To have better stirring action
D. To reduce problem of oxidation
E. 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. it is filled below core level
B. it is filled above core level
C. it is fully empty
D. none of the above
A. Optical pyrometer
B. Mercury thermometer
C. Alcohol thermometer
D. Any of the above
A. arc heating
B. resistance heating
C. induction heating
D. dielectric heating