Fuels and Combustion Presence of phosphorous in metallurgical coal Increases its caking power Is not undersirable Reduces its calorific value Badly affects the quality of steel Increases its caking power Is not undersirable Reduces its calorific value Badly affects the quality of steel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Mineral matter content (M) and ash content (A) in coal are approximately related as M = A M = 2A M = 1.5A M = 1.1A M = A M = 2A M = 1.5A M = 1.1A ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Washing of coal Improves its coking properties Reduces its sulphur and ash content All of these Controls its ash fusibility and increases its calorific value Improves its coking properties Reduces its sulphur and ash content All of these Controls its ash fusibility and increases its calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Advantages of fluidised bed combustion are Reduced NOx formation in flue gas Lower furnace operating temperature High heat transfer rate All of these Reduced NOx formation in flue gas Lower furnace operating temperature High heat transfer rate All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bulk density of pulverised coal may be about __________ kg/m³. 1500 500 100 1000 1500 500 100 1000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Combustion of pulverised coal compared to the lumpy coal Facilitates combustion with lower excess air Provides higher thermal efficiency & flame temperature Provides better control of furnace temperature All of these Facilitates combustion with lower excess air Provides higher thermal efficiency & flame temperature Provides better control of furnace temperature All of these ANSWER DOWNLOAD EXAMIANS APP
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