Fuels and Combustion Combustion of pulverised coal as compared to that of lump coal Develops a low temperature flame Can be done with less excess air Develops a non-luminous flame Provides a lower rate of heat release Develops a low temperature flame Can be done with less excess air Develops a non-luminous flame Provides a lower rate of heat release ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In high temperature carbonisation (as compared to low temperature carbonisation) of coal Coke oven gas yield is more Tar yield is less but free carbon in tar is more Calorific value of coke oven gas is less All of these Coke oven gas yield is more Tar yield is less but free carbon in tar is more Calorific value of coke oven gas is less All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Caking index of the coal blend used for the manufacture of metallurgical coke should be around 21 5 48 40 21 5 48 40 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in the oxygen content of the coal, its __________ decreases. Caking power Neither A nor B Calorific value Both A & B Caking power Neither A nor B Calorific value Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in Shallow and small piles Fine sizes without the presence of any lump Large heaps with small surface to volume ratio Closed space without any ventilation facility Shallow and small piles Fine sizes without the presence of any lump Large heaps with small surface to volume ratio Closed space without any ventilation facility ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following has the highest flame velocity? CH₄ CO C₂H₆ H₂ CH₄ CO C₂H₆ H₂ ANSWER DOWNLOAD EXAMIANS APP
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