A. Pulverised coal
B. Furnace oil
C. Blast furnace gas/mixed gas
D. Coke oven gas
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
A. Thermal efficiency of the process
B. Sources of heat losses
C. Scope of reduction of heat losses
D. All A., B. and C.
A. Waste heat recovery from flue gas
B. Minimising heat losses from furnace walls
C. Maintaining proper draught
D. All A., B. and C.
A. Type of fuels viz. solid, liquid or gaseous
B. Flue gas temperature
C. Emissivity of refractory walls
D. Initial temperature of the charged stock
A. Physical nature, ash content and fineness of the coal
B. Amount of excess air supplied and load on the boiler
C. Type of burner and combustion chamber
D. All A., B. and C.
A. Arc
B. Resistance
C. Low frequency induction
D. High frequency induction