Fuels and Combustion Coal is pulverised before burning in large capacity boiler furnaces mainly to Provide trouble free operation Ensure its complete combustion Facilitate easy ash removal Enhance its calorific value Provide trouble free operation Ensure its complete combustion Facilitate easy ash removal Enhance its calorific value 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 The maximum adiabatic flame temperature in air is __________ the maximum flame temperature in pure oxygen. Higher than Not related to Same as Lower than Higher than Not related to Same as Lower than ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion __________ has the widest inflammability limit (explosion limit) of all the gases. Carbon monoxide Acetylene Hydrogen Methane Carbon monoxide Acetylene Hydrogen Methane ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good metallurgical coke Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have low fusion point of its ash Should have high porosity Should be brittle Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have low fusion point of its ash Should have high porosity Should be brittle 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
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