Steam Boilers, Engines, Nozzles and Turbines The behavior of coal in a furnace is determined by The content of sulphur The proximate analysis The content of ash and heating value The exact analysis The content of sulphur The proximate analysis The content of ash and heating value The exact analysis ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The feed check valve is used in order to Regulate flow of boiler water Check level of water in boiler drum Allow high pressure feed water to flow to drum and not allow reverse flow to take place Recirculate unwanted feed water Regulate flow of boiler water Check level of water in boiler drum Allow high pressure feed water to flow to drum and not allow reverse flow to take place Recirculate unwanted feed water ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The aim of a compound steam engine is To reduce the length of stroke All of these To reduce the temperature range in each cylinder To reduce the ratio of expansion in each cylinder To reduce the length of stroke All of these To reduce the temperature range in each cylinder To reduce the ratio of expansion in each cylinder ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts. and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is 0.8 0.25 0.5 0.4 0.8 0.25 0.5 0.4 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The temperature of flue gases at air heater outlet should be Below dew point temperature of flue gases 100°C Above dew point temperature of flue gases Less than wet bulb temperature of flue gases Below dew point temperature of flue gases 100°C Above dew point temperature of flue gases Less than wet bulb temperature of flue gases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Relative percentage of heat absorbed through the heat transfer of(i) Furnace water wall(ii) Boiler tank(iii) Superheater(iv) Economizer(v) Air-heater of a typical boiler of 200 MW capacity would be of the order of 48 : 20 : 15 : 7 : 10 7 : 15 : 20 : 10 : 48 10 : 7 : 15 : 20 : 48 20 : 48 : 7 : 15 : 10 48 : 20 : 15 : 7 : 10 7 : 15 : 20 : 10 : 48 10 : 7 : 15 : 20 : 48 20 : 48 : 7 : 15 : 10 ANSWER DOWNLOAD EXAMIANS APP
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