Steam Boilers, Engines, Nozzles and Turbines Hard coke is produced by carburization of coal at 700-850°C 950-1100°C Atmospheric temperature 500-600°C 700-850°C 950-1100°C Atmospheric temperature 500-600°C ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Desecration of feed water is carried out because it reduces Corrosion caused by oxygen pH value of water Cavitation of boiler feed pumps Heat transfer coefficient Corrosion caused by oxygen pH value of water Cavitation of boiler feed pumps Heat transfer coefficient ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The evaporation of 15.653 kg of water per hour from and at 100°C is called One boiler h.p. Factor of evaporation Equivalent evaporation Evaporative capacity One boiler h.p. Factor of evaporation Equivalent evaporation Evaporative capacity ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle) Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V² cosα Vb = V cosα Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V² cosα Vb = V cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Stage efficiency is also known as Nozzle efficiency Diagram efficiency None of these Gross efficiency Nozzle efficiency Diagram efficiency None of these Gross efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The average value of diagram factor lies between 0.65 to 0.9 0.8 to 1.2 0.2 to 0.5 0.5 to 0.65 0.65 to 0.9 0.8 to 1.2 0.2 to 0.5 0.5 to 0.65 ANSWER DOWNLOAD EXAMIANS APP
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