Power required in case of forced draught as compared to induced draught (for the same draught produced) is More Less Either more or less; depends on the flue gas density Answer: Option B Same TRUE ANSWER : ? YOUR ANSWER : ?
Very high pressure boilers are usually __________ boilers. Natural circulation Fire tube Water tube Waste heat TRUE ANSWER : ? YOUR ANSWER : ?
Scaling of furnace stock is reduced by __________ in flue gas. All of these CO H₂ High CO/CO₂ TRUE ANSWER : ? YOUR ANSWER : ?
In producer gas making furnace, steam is added along with air to mainly control the Temperature of producer gas Fusion of coal ash & clinker formation V. of producer gas Tar content in producer gas TRUE ANSWER : ? YOUR ANSWER : ?
Heat transfer rate to the charge/stock in a furnace does not depend upon the Initial temperature of the charged stock Flue gas temperature Type of fuels viz solid, liquid or gaseous Emissivity of refractory walls TRUE ANSWER : ? YOUR ANSWER : ?
Turndown ratio of a burner gives an idea of the __________ in the furnace. Volume of the combustion chamber Range of fuel firing rates Minimum heat input rate only Maximum heat input rate only TRUE ANSWER : ? YOUR ANSWER : ?
In which of the following furnaces, the gases are sucked through the stock bed from below? Soaking pit Beehive oven Sintering machine None of these TRUE ANSWER : ? YOUR ANSWER : ?
Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an Steam boiler Salt bath furnace Annealing furnace Blast furnace TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following furnaces will have maximum thermal efficiency? Boiler furnace Rotary kilns Walking beam reheating furnace Soaking pits TRUE ANSWER : ? YOUR ANSWER : ?
Ceramic recuperators compared to metallic recuperators for the same duty Occupy more space Are less costly Have higher pressure differential between flue gas & air side Are lighter TRUE ANSWER : ? YOUR ANSWER : ?