__________ is an indirectly heated furnace. Muffle furnace Soaking pit Open hearth furnace Reheating furnace TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following accentuates clinker-ing troubles on furnace grate burning coal? Thick firebed and preheated primary air Low forced draft & fuel bed temperature Low reactivity of carbonised residue containing high proportion of iron & sulphur All of these TRUE ANSWER : ? YOUR ANSWER : ?
Which is a continuous furnace? None of these Annealing furnace Glass tank furnace Coke ovens TRUE ANSWER : ? YOUR ANSWER : ?
Scaling of furnace stock is reduced by __________ in flue gas. H₂ High CO/CO₂ CO All of these TRUE ANSWER : ? YOUR ANSWER : ?
In which of the following furnaces, the gases are sucked through the stock bed from below? Beehive oven Sintering machine Soaking pit None of these TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not a directly fired furnace? By-product coke oven Sintering furnace Open hearth furnace Calcination kiln TRUE ANSWER : ? YOUR ANSWER : ?
The main function of a muffle in the muffle furnace is to Protect the charge from the effects of the products of combustion Both A & B Neither A nor B Smooth out temperature inequalities on the combustion side of the muffle wall TRUE ANSWER : ? YOUR ANSWER : ?
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent. 60 40 20 80 TRUE ANSWER : ? YOUR ANSWER : ?
Reverberatory furnace is used for Roasting/reduction of ores Steel melting Annealing steel coil Heating air TRUE ANSWER : ? YOUR ANSWER : ?
Recuperator is Not used for fuel gas preheating A continuous waste heat recovery equipment An intermittant waste heat recovery equipment Heavier than regenerator meant for the same duty TRUE ANSWER : ? YOUR ANSWER : ?