Fuels and Combustion Hardgrove grindability index of four coal samples are given below. Which of them is the easiest to grind? 50 70 85 100 50 70 85 100 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of __________ in a dry gaseous fuel does not contribute to its calorific value. Oxygen Sulphur Hydrogen Carbon Oxygen Sulphur Hydrogen Carbon ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Nitrogen in coal Is recovered as ammonia during its carbonisation Comes from protein in parent vegetable matter Is present upto 1-2% All of these Is recovered as ammonia during its carbonisation Comes from protein in parent vegetable matter Is present upto 1-2% All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The main function of primary air in pulverised coal fired burner is to Burn CO to CO₂ Preheat the tertiary air used for complete combustion of CO to CO₂ Have proper combustion by supplying it around the burner Dry and transport the coal Burn CO to CO₂ Preheat the tertiary air used for complete combustion of CO to CO₂ Have proper combustion by supplying it around the burner Dry and transport the coal ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Stack heat losses can be minimised by Using low c.v. fuels Controlling the excess air Maintaining proper draft in the furnace Oxygen enrichment of combustion air Using low c.v. fuels Controlling the excess air Maintaining proper draft in the furnace Oxygen enrichment of combustion air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Washing of coal decreases its Both B and C Ash content Caking index Mineral matter content Both B and C Ash content Caking index Mineral matter content ANSWER DOWNLOAD EXAMIANS APP
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