Fuels and Combustion Presence of free moisture in coal during its high temperature carbonisation None of these Reduces the coking time Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls Increases the loss of fine coal dust from the ovens when charging None of these Reduces the coking time Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls Increases the loss of fine coal dust from the ovens when charging ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal containing large quantity of __________ are difficult to wash. Volatile matter Ash Free impurities Inherent mineral matter Volatile matter Ash Free impurities Inherent mineral matter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following will be unsuitable for dust cleaning from flue gas at 400°C from a pulverised coal fired boiler ? Hydrocyclones Wet scrubber Bag filter Multicyclones Hydrocyclones Wet scrubber Bag filter Multicyclones ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which is the most matured coal? Bituminous Anthracite Lignite Semi-anthracite Bituminous Anthracite Lignite Semi-anthracite ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Overfire burning in a furnace is a phenomenon characterised by the Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air Supply of excess air None of these Supply of excess fuel Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air Supply of excess air None of these Supply of excess fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Water gas constitutes mainly of CO₂ & H₂ CO & N₂ CO & H₂ CH₄ & H₂ CO₂ & H₂ CO & N₂ CO & H₂ CH₄ & H₂ ANSWER DOWNLOAD EXAMIANS APP
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