Fuels and Combustion Calorific value of gobar gas (containing CH₄ = 60% , H₂ = 10% ; CO₂ = 30%) may be about __________ Kcal/Nm³. 5400 1800 10200 3200 5400 1800 10200 3200 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High amount of sulphur and phosphorous in coke causes Brittleness of steel made by using it Increase in its strength Decrease in its calorific value None of these Brittleness of steel made by using it Increase in its strength Decrease in its calorific value None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of nitrogen in combustion air does not reduce the Flame temperature Any of the above Amount of heat liberated Flue gas temperature Flame temperature Any of the above Amount of heat liberated Flue gas temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature carbonisation Produces higher quantity of gas than high temperature carbonisation Is mainly for producing the smokeless domestic coke Produces less quantity of tar than high temperature carbonisation Is meant for the production of 'metallurgical coke' Produces higher quantity of gas than high temperature carbonisation Is mainly for producing the smokeless domestic coke Produces less quantity of tar than high temperature carbonisation Is meant for the production of 'metallurgical coke' 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. < 37% >71% None of these In between 37 & 71% < 37% >71% None of these In between 37 & 71% ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always < 1 Unpredictable > 1 1 < 1 Unpredictable > 1 1 ANSWER DOWNLOAD EXAMIANS APP
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