Fuels and Combustion Weathering of coal during storage causes Increase in its friability All of these Decrease in its caking capacity Reduction in coal size Increase in its friability All of these Decrease in its caking capacity Reduction in coal size ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following fuels is generally not used in thermal power plant boiler firing? Coal middling from washeries F. gas, coke oven gas and L.D. converter gas Furnace oil, light diesel oil and tar/PCM Pulverised coking coal Coal middling from washeries F. gas, coke oven gas and L.D. converter gas Furnace oil, light diesel oil and tar/PCM Pulverised coking coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Mineral matter content (M) and ash content (A) in coal are approximately related as M = 2A M = A M = 1.1A M = 1.5A M = 2A M = A M = 1.1A M = 1.5A ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F. >120 90-110 >120 90-110 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following would require least amount of secondary air for combustion? Bituminous coal containing 20% ash and 25% volatile matter Coke breeze containing 25% ash and 2% volatile matter Semi-bituminous coal containing 25% ash and 20% volatile matter Anthracite containing 10% volatile matter and 8% ash Bituminous coal containing 20% ash and 25% volatile matter Coke breeze containing 25% ash and 2% volatile matter Semi-bituminous coal containing 25% ash and 20% volatile matter Anthracite containing 10% volatile matter and 8% ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of gobar gas (containing CH₄ = 60% , H₂ = 10% ; CO₂ = 30%) may be about __________ Kcal/Nm³. 1800 10200 5400 3200 1800 10200 5400 3200 ANSWER DOWNLOAD EXAMIANS APP
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