Steam Boilers, Engines, Nozzles and Turbines A wet vapor can be completely specified by Pressure only Dryness fraction only Pressure and dryness fraction Temperature only Pressure only Dryness fraction only Pressure and dryness fraction Temperature only ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a boiler, the heat is lost All of these In moisture present in the fuel To steam formed by combustion of hydrogen per kg of fuel To dry flue gases All of these In moisture present in the fuel To steam formed by combustion of hydrogen per kg of fuel To dry flue gases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure) p₂/p₁ p₁/p₂ p₁. p₂ p₁ + p₂ p₂/p₁ p₁/p₂ p₁. p₂ p₁ + p₂ ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the circulation of water, in a boiler, is by convection currents which are set up during the heating of water, then the boiler is known as Internally fired boiler Natural circulation boiler Forced circulation boiler Externally fired boiler Internally fired boiler Natural circulation boiler Forced circulation boiler Externally fired boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Efficiency of a thermal cycle increases by Reheating of steam Regeneration Both (A) and (B) Cooling of steam Reheating of steam Regeneration Both (A) and (B) Cooling of steam ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30°. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be 320/3 m/s 160/3 m/s 640 m/s 640/3 m/s 320/3 m/s 160/3 m/s 640 m/s 640/3 m/s ANSWER DOWNLOAD EXAMIANS APP
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