Fuels and Combustion Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent. 55 to 75 75 15 to 25 35 to 45 55 to 75 75 15 to 25 35 to 45 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Optimum preheating temperature for pitch creosote mixture (PCM) which is also termed as C.T.F-200, before atomisation through burners is 200 °R 200 °C 200 °K 200 °F 200 °R 200 °C 200 °K 200 °F ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of __________ in a dry gaseous fuel does not contribute to its calorific value. Oxygen Hydrogen Sulphur Carbon Oxygen Hydrogen Sulphur Carbon ANSWER DOWNLOAD EXAMIANS APP
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 Provides a lower rate of heat release Develops a non-luminous flame Develops a low temperature flame Can be done with less excess air Provides a lower rate of heat release Develops a non-luminous flame ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion High excess air in combustion of fuels results in Incomplete combustion Increased fuel consumption None of these Smoky flame Incomplete combustion Increased fuel consumption None of these Smoky flame ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the 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 Calorific value of the coal increases High rank coals have higher amount of volatile matter Ratio of fixed carbon to volatile matter increases ANSWER DOWNLOAD EXAMIANS APP
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