Fuels and Combustion High excess air in combustion of fuels results in Smoky flame None of these Increased fuel consumption Incomplete combustion Smoky flame None of these Increased fuel consumption Incomplete combustion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Washing of coal Improves its coking properties Controls its ash fusibility and increases its calorific value All of these Reduces its sulphur and ash content Improves its coking properties Controls its ash fusibility and increases its calorific value All of these Reduces its sulphur and ash content ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The hottest part of the flame lies in its____zone. Luminous Yellow Unburnt gases Non-luminous Luminous Yellow Unburnt gases Non-luminous ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The difference between total carbon and fixed carbon of coal will be minimum in case of Anthracite Bituminous coal High temperature coke (V.M < 0.5%) Lignite Anthracite Bituminous coal High temperature coke (V.M < 0.5%) Lignite 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 Decreases Remains same Increases May increase or decrease ; depends on the type of fuel Decreases Remains same 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. In between 37 & 71% None of these >71% < 37% In between 37 & 71% None of these >71% < 37% ANSWER DOWNLOAD EXAMIANS APP
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