Temperature of a furnace fired with low calorific value fuel gas (i.e. lean gas) can be increased by Preheating the fuel gas All of these Oxygen enrichment of combustion air Preheating the combustion air TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following variables affects the furnace capacity? Thermal conductivity of stock All of these Thickness of heating stock Temperature of flue gas TRUE ANSWER : ? YOUR ANSWER : ?
Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about __________ °C. 80 130 180 250 TRUE ANSWER : ? YOUR ANSWER : ?
Reheating furnace (pusher type) is used for heating Steel sheets Ingots Slabs Steel coils TRUE ANSWER : ? YOUR ANSWER : ?
In order to maintain an oxidising atmosphere in a furnace, it should have More of CO in flue gas More of excess air Less of excess air More of CO₂ in flue gas TRUE ANSWER : ? YOUR ANSWER : ?
An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace. Tunnel Walking beam Rotary hearth Shaft TRUE ANSWER : ? YOUR ANSWER : ?
Thickness of stock does not affect the fuel economy of furnaces, if the material to be heated is of Both A and B Low emissivity Neither A nor B High thermal conductivity TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following furnaces will have maximum thermal efficiency? Rotary kilns Walking beam reheating furnace Soaking pits Boiler furnace TRUE ANSWER : ? YOUR ANSWER : ?
In a heating process, a heat flow diagram in which the quantities of heat in the various items of a heat balance are represented by the width of a band is called the Sankey diagram Ostwald chart Cox chart None of these TRUE ANSWER : ? YOUR ANSWER : ?