Fuels and Combustion Which of the following gaseous fuels has the lowest calorific value? Gobar gas Blast furnace gas Refinery gas Converter gas Gobar gas Blast furnace gas Refinery gas Converter gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is unsuitable fuel for producer gas manufacture? Coal having low fusion point of its ash Anthracite Coke Coal having high fusion point of its ash Coal having low fusion point of its ash Anthracite Coke Coal having high fusion point of its ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Highly caking coals Both B and C Produce weak coke Produce strong coke May damage the coke oven walls during carbonisation Both B and C Produce weak coke Produce strong coke May damage the coke oven walls during carbonisation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In low temperature carbonisation of coal as compared to high temperature carbonisation __________ produced is less. Yield percentage of coke Difference in gross & net calorific value of the coke oven gas Free carbon content in tar Yield of ammonia present in coke oven gas Yield percentage of coke Difference in gross & net calorific value of the coke oven gas Free carbon content in tar Yield of ammonia present in coke oven gas 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 Propane and LPG Sewage gas and gobar gas F. gas and coke oven gas Propane and acetylene Propane and LPG Sewage gas and gobar gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following would require least amount of secondary air for combustion? Bituminous coal containing 20% ash and 25% volatile matter Anthracite containing 10% volatile matter and 8% ash Semi-bituminous coal containing 25% ash and 20% volatile matter Coke breeze containing 25% ash and 2% volatile matter Bituminous coal containing 20% ash and 25% volatile matter Anthracite containing 10% volatile matter and 8% ash Semi-bituminous coal containing 25% ash and 20% volatile matter Coke breeze containing 25% ash and 2% volatile matter ANSWER DOWNLOAD EXAMIANS APP
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