Steam Boilers, Engines, Nozzles and Turbines A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be 79 m/s 188 m/s 900 m/s 450 m/s 79 m/s 188 m/s 900 m/s 450 m/s ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The water tubes in a Babcock and Wilcox boiler are Horizontal Vertical Inclined Horizontal and inclined Horizontal Vertical Inclined Horizontal and inclined ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a nozzle, the effect of super-saturation is to Decrease dryness fraction of steam Increase the entropy Increase the heat drop Decrease specific volume of steam Decrease dryness fraction of steam Increase the entropy Increase the heat drop Decrease specific volume of steam ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Water at pressure of 4 kg/cm² and 160°C temperature when exposed to atmosphere will Cool down Boil Remain as it was Flash i.e. get converted into steam Cool down Boil Remain as it was Flash i.e. get converted into steam ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The purpose of governing in steam turbines is to Reheat the steam and improve its quality Maintain the speed of the turbine Completely balance against end thrust Reduce the effective heat drop Reheat the steam and improve its quality Maintain the speed of the turbine Completely balance against end thrust Reduce the effective heat drop ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Secondary air is the air used to Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Transport and dry the coal Air delivered by induced draft fan Provide air around burners for obtaining optimum combustion Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Transport and dry the coal Air delivered by induced draft fan Provide air around burners for obtaining optimum combustion ANSWER DOWNLOAD EXAMIANS APP
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