Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the Calorific value of the coal increases High rank coals have higher amount of volatile matter Ratio of fixed carbon to volatile matter increases Oxygen content progressively decreases Calorific value of the coal increases High rank coals have higher amount of volatile matter Ratio of fixed carbon to volatile matter increases Oxygen content progressively decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C. 70 145 85 105 70 145 85 105 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal? Durain Fussain Vitrain Clarain Durain Fussain Vitrain Clarain ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Oxygen required for theoretically complete combustion of 1 Nm³ methane is __________ Nm³. 1 2 6 4 1 2 6 4 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Abel apparatus is used for those oils, whose flash points are___°F. >120 >280 300-600 >120 >280 300-600 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Sulphur in metallurgical coal Neither A nor B Contributes to its heating value Both A and B Affects the quality of steel produced as cracks develop on the surface while rolling the steel Neither A nor B Contributes to its heating value Both A and B Affects the quality of steel produced as cracks develop on the surface while rolling the steel ANSWER DOWNLOAD EXAMIANS APP
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