Fuels and Combustion Short/intense flame is produced during combustion of gaseous fuel by using Preheated secondary air High amount/current of combustion air Low amount/current of combustion air Very little excess air Preheated secondary air High amount/current of combustion air Low amount/current of combustion air Very little excess air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Stack (chimney) height in a big thermal power plant is dictated by the Pollution control aspect Limitation of constructional facilities Draught to be created None of these Pollution control aspect Limitation of constructional facilities Draught to be created None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Improper storage condition results in the weathering of coal and spontaneous combustion, which increases its Caking index Friability & oxygen content Yield of carbonised products Calorific value Caking index Friability & oxygen content Yield of carbonised products Calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively __________ percent. 15 & 8 10 & 3 10 & 20 3 & 10 15 & 8 10 & 3 10 & 20 3 & 10 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gross heating value of coal is __________ the net heating value. Higher than Same as Lower than None of these Higher than Same as Lower than None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Advantages of fluidised bed combustion are Lower furnace operating temperature All of these High heat transfer rate Reduced NOx formation in flue gas Lower furnace operating temperature All of these High heat transfer rate Reduced NOx formation in flue gas ANSWER DOWNLOAD EXAMIANS APP
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