Fuels and Combustion Improper storage condition results in the weathering of coal and spontaneous combustion, which increases its Friability & oxygen content Calorific value Yield of carbonised products Caking index Friability & oxygen content Calorific value Yield of carbonised products Caking index ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following accounts for maximum energy loss in a boiler? Incomplete combustion Ash content in the fuel Flue gases Unburnt carbon in flue gases Incomplete combustion Ash content in the fuel Flue gases Unburnt carbon in flue gases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Stack heat losses can be minimised by Oxygen enrichment of combustion air Using low c.v. fuels Maintaining proper draft in the furnace Controlling the excess air Oxygen enrichment of combustion air Using low c.v. fuels Maintaining proper draft in the furnace Controlling the excess air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is a primary fuel? Wood charcoal Natural gas Blast furnace coke Gasoline Wood charcoal Natural gas Blast furnace coke Gasoline ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Overfire burning in a furnace is a phenomenon characterised by the Supply of excess fuel Supply of excess air Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air None of these Supply of excess fuel Supply of excess air Burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³ ), while the C.V. is same on weight basis (i.e., kcal/kg) ? F. gas and coke oven gas Propane and acetylene Sewage gas and gobar gas Propane and LPG F. gas and coke oven gas Propane and acetylene Sewage gas and gobar gas Propane and LPG ANSWER DOWNLOAD EXAMIANS APP
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