Oxygen percentage in the flue gas coming out of a gaseous fuel fired furnace should be ideally about __________ percent. < 8 < 2 < 10 < 5 TRUE ANSWER : ? YOUR ANSWER : ?
Pulverised fuel fired furnaces employ __________ fuel firing. Horizontal All of these Tangential Vertical TRUE ANSWER : ? YOUR ANSWER : ?
An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace. Tunnel Rotary hearth Shaft Walking beam TRUE ANSWER : ? YOUR ANSWER : ?
A refractory wall separating the stock and the source of heat is provided in a Muffle furnace Continuous furnace Updraft kiln None of these TRUE ANSWER : ? YOUR ANSWER : ?
Fuel economy in furnaces can be achieved by Reducing the heat loss through furnace openings & doors All of these Using oxygen enriched combustion air Preheating the combustion air TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not an additive for flue gases from furnace to reduce its dew-point? Alkaline powders Fine dolomite Ammonia None of these TRUE ANSWER : ? YOUR ANSWER : ?
Reheating furnace (pusher type) is used for heating Slabs Steel sheets Ingots Steel coils TRUE ANSWER : ? YOUR ANSWER : ?
Large tonnage of refractory bricks are dried in a Muffle furnace Shaft furnace Rotary hearth furnace Tunnel kiln TRUE ANSWER : ? YOUR ANSWER : ?
Which is a continuous furnace? None of these Coke ovens Glass tank furnace Annealing furnace TRUE ANSWER : ? YOUR ANSWER : ?
The heating capacity of continuous reheating furnace depends upon the Hearth area and furnace temperature Ratio of wall surface to stock surface All of these Emissivity of the stock TRUE ANSWER : ? YOUR ANSWER : ?