Fuels and Combustion Ignition temperature of a fuel in air is __________ that in pure oxygen. Either more or less; depends on the type of fuel Equal to More than Less than Either more or less; depends on the type of fuel Equal to More than Less than ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion When the coal is heated in absence of air, it is called its Carbonisation Coalification Gasification Deoxidation Carbonisation Coalification Gasification Deoxidation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking coals are invariably Anthracites Semi-anthracites Lignites Bituminous coals Anthracites Semi-anthracites Lignites Bituminous coals ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal. Gasification Carbonisation Coalification Oxidation Gasification Carbonisation Coalification Oxidation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the Incomplete combustion of coal Chances of clinker formation Requirement of large volume combustion chamber Risk of explosion Incomplete combustion of coal Chances of clinker formation Requirement of large volume combustion chamber Risk of explosion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gross and net calorific value of a fuel will be the same Ifits carbon content is very low If its ash content is zero If its hydrogen/hydrogen compound content is zero Under no circumstances Ifits carbon content is very low If its ash content is zero If its hydrogen/hydrogen compound content is zero Under no circumstances ANSWER DOWNLOAD EXAMIANS APP
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