In which of the following furnaces, the gases are sucked through the stock bed from below? Sintering machine Soaking pit None of these Beehive oven TRUE ANSWER : ? YOUR ANSWER : ?
The reason for excessive clinker formation in gas producers is the Use of coal/coke containing a high % of fines and ash Use of fuel having too low an ash fusion temperature All of these Development of hot spots in the fuel bed and an abnormally high rate of gasification TRUE ANSWER : ? YOUR ANSWER : ?
Combustion of fuel in a furnace with oxygen enriched air results in higher Flue gas volume Stack loss Fuel consumption Flame temperature TRUE ANSWER : ? YOUR ANSWER : ?
__________ furnace is not an electric furnace. Pot Resistance Arc Induction TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following variables does not affect the furnace capacity? None of these Ratio of wall surface to surface of stock Gas velocity in furnace Size of the furnace TRUE ANSWER : ? YOUR ANSWER : ?
Ceramic coating material for furnace refractory, which increases its emissivity and thus the radiation heat transfer rate in the furnace, comprises of Thoria Zircon powder Graphite powder Beryllium TRUE ANSWER : ? YOUR ANSWER : ?
Fuel economy in an industrial furnace operation can not be achieved by the use of Non-preheated combustion air Recupterators Stoichiometric combustion air Combustion air not enriched with oxygen TRUE ANSWER : ? YOUR ANSWER : ?
Air filtration in a furnace Increases the flue gas temperature Reduces its thermal efficiency Is indicated by flame sting out None of these TRUE ANSWER : ? YOUR ANSWER : ?
Turn down ratio of a burner Should be 1:1 for a batch type furnace. Is the ratio of maximum to minimum permissible heat input rates Should be as low as possible i.e., 1 : 2 Is normally much more for a continuous furnace as compared to a batch furnace TRUE ANSWER : ? YOUR ANSWER : ?
An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace. Tunnel Shaft Walking beam Rotary hearth TRUE ANSWER : ? YOUR ANSWER : ?