Fuels and Combustion Mineral matter, 'M' and ash percentage 'A' in coal are roughly related as M = A M = 0.5 A M = 1.8 A M = 1.1 A M = A M = 0.5 A M = 1.8 A M = 1.1 A ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Main constituent of natural gas is C₃H₈ H₂ C₂H₆ CH₄ (upto 90%) C₃H₈ H₂ C₂H₆ CH₄ (upto 90%) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Compound coke ovens are those which can be heated by Rich gas (e.g., coke oven gas) Both B and C Lean gas (e.g., B.F. gas) Both steam and electrical power Rich gas (e.g., coke oven gas) Both B and C Lean gas (e.g., B.F. gas) Both steam and electrical power ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Temperature of coke oven gas just before entering into saturator (for recovery of NH₃) is about __________ °C. 30 180 65 120 30 180 65 120 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following accounts for maximum energy loss in a boiler? Ash content in the fuel Flue gases Incomplete combustion Unburnt carbon in flue gases Ash content in the fuel Flue gases Incomplete combustion Unburnt carbon in flue gases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not applicable to fluidised bed combustion of coal? None of these It can not burn low grade coal Less heat transfer surface area is required in boilers It achieves higher fuel combustion efficiency None of these It can not burn low grade coal Less heat transfer surface area is required in boilers It achieves higher fuel combustion efficiency ANSWER DOWNLOAD EXAMIANS APP
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