Fuels and Combustion Combustion of pulverised coal as compared to that of lump coal Develops a non-luminous flame Develops a low temperature flame Provides a lower rate of heat release Can be done with less excess air Develops a non-luminous flame Develops a low temperature flame Provides a lower rate of heat release Can be done with less excess air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around __________ percent. 25 and 97 40 and 70 80 and 97 95 and 100 25 and 97 40 and 70 80 and 97 95 and 100 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bright coal Contains mainly vitrain & clarain and is generally coking Contains more than 90% fussain Contains more than 90% durain Is non-coking Contains mainly vitrain & clarain and is generally coking Contains more than 90% fussain Contains more than 90% durain Is non-coking ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High rate of heating of coke ovens Produces larger size coke May damage its walls due to abrupt excessive swelling of coal Increases the time of carbonisation None of these Produces larger size coke May damage its walls due to abrupt excessive swelling of coal Increases the time of carbonisation None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen. 22.4 Nm³ 32 kg All of these 1kg mole 22.4 Nm³ 32 kg All of these 1kg mole ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coal is heated in absence of air for 7 minutes at a temperature of about __________ °C, during its volatile matter determination for proximate analysis. 1150 750 550 950 1150 750 550 950 ANSWER DOWNLOAD EXAMIANS APP
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