Steam Boilers, Engines, Nozzles and Turbines An economiser in a boiler Decreases fuel consumption Increases steam pressure Decreases steam pressure Increases steam flow Decreases fuel consumption Increases steam pressure Decreases steam pressure Increases steam flow ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Presence of moisture in fuel oil would Clean the nozzles Because sputtering, possibly extinguishing flame Keep the burner tips cool Aid in proper combustion Clean the nozzles Because sputtering, possibly extinguishing flame Keep the burner tips cool Aid in proper combustion ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity ‘V’ at inlet) Vb = V cos α Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V² cos α Vb = V cos α Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V² cos α ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The velocity of flue gases (V) through the chimney under a static draught of (H') metres is given by V = 2g H' V = 2g/H' V = 2gH' V = H'/2g V = 2g H' V = 2g/H' V = 2gH' V = H'/2g ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Equivalent evaporation of water is the evaporation for a feed water supply at 100°C And its corresponding conversion into dry saturated steam at 100°C and 1.033 kg/cm² And its corresponding conversion into dry steam at desired boiler pressure Conversion into steam at the same pressure at which feed water is supplied Conversion into steam at atmospheric condition And its corresponding conversion into dry saturated steam at 100°C and 1.033 kg/cm² And its corresponding conversion into dry steam at desired boiler pressure Conversion into steam at the same pressure at which feed water is supplied Conversion into steam at atmospheric condition ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Carbonization of coal is the process of Binding the pulverized coal into briquettes Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel Heating wood in a limited supply of air at temperatures below 300°C Pulverizing coal in inert atmosphere Binding the pulverized coal into briquettes Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel Heating wood in a limited supply of air at temperatures below 300°C Pulverizing coal in inert atmosphere ANSWER DOWNLOAD EXAMIANS APP
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