Steam Boilers, Engines, Nozzles and Turbines In a nozzle, the effect of super-saturation is to Increase the entropy Increase the heat drop Decrease dryness fraction of steam Decrease specific volume of steam Increase the entropy Increase the heat drop Decrease dryness fraction of steam Decrease specific volume of steam ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a velocity compounded impulse turbine, when steam flows through the second row of moving blades, Velocity decreases Velocity increases Velocity remains constant Pressure remains constant Velocity decreases Velocity increases Velocity remains constant Pressure remains constant ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The actual vacuum in a condenser is equal to Gauge pressure - atmospheric pressure Barometric pressure - actual pressure Gauge pressure + atmospheric pressure Barometric pressure + actual pressure Gauge pressure - atmospheric pressure Barometric pressure - actual pressure Gauge pressure + atmospheric pressure Barometric pressure + actual pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A regenerative steam cycle renders Increased thermal efficiency Decreased work output per unit mass of steam Increased work output per unit mass of steam Decreased work output per unit mass of steam as well as increased thermal efficiency Increased thermal efficiency Decreased work output per unit mass of steam Increased work output per unit mass of steam Decreased work output per unit mass of steam as well as increased thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor of evaporation is given by (h - hf1)/2257 (h × hf1)/2257 None of these (h + hf1)/2257 (h - hf1)/2257 (h × hf1)/2257 None of these (h + hf1)/2257 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The steam leaves the nozzle at a Low pressure and a low velocity High pressure and a high velocity High pressure and a low velocity Low pressure and a high velocity Low pressure and a low velocity High pressure and a high velocity High pressure and a low velocity Low pressure and a high velocity ANSWER DOWNLOAD EXAMIANS APP
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