Fuels and Combustion Dust content in raw blast furnace gas is about __________ gm/Nm³ , hence it is cleaned to the dust level of about < 10 mg /Nm³ before use. 43832 150-200 70-100 15-30 43832 150-200 70-100 15-30 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During coking of coal, the ash content (percentage) Remains constant Decreases None of these Increases Remains constant Decreases None of these Increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent. None of these >71% < 37% In between 37 & 71% None of these >71% < 37% In between 37 & 71% ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around __________ cm/hr. 20 0.5 10 2.5 20 0.5 10 2.5 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The heat of combustion of a fuel Can't be known without calculating it Is always positive Is always negative Is equal to the heat of formation Can't be known without calculating it Is always positive Is always negative Is equal to the heat of formation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in C/H ratio of a fuel, the dew point of flue gases May increase or decrease ; depends on the type of fuel Increases Decreases Remains same May increase or decrease ; depends on the type of fuel Increases Decreases Remains same ANSWER DOWNLOAD EXAMIANS APP
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