Steam Boilers, Engines, Nozzles and Turbines The ratio of the workdone on the blades to the energy supplied to the blades, is called Nozzle efficiency Mechanical efficiency Blading efficiency Gross or stage efficiency Nozzle efficiency Mechanical efficiency Blading efficiency Gross or stage efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy rise per kg of water is 145 kJ. If the calorific valve of the coal is 2050 kJ/kg, then the boiler efficiency will be 0.63 0.78 0.74 0.56 0.63 0.78 0.74 0.56 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The steam enters 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
Steam Boilers, Engines, Nozzles and Turbines The chimney draught varies with Height of chimney Climatic conditions Temperature of furnace gases All of these Height of chimney Climatic conditions Temperature of furnace gases All of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines While steam expands in turbines, theoretically the entropy Decreases Remains constant Behaves unpredictably Increases Decreases Remains constant Behaves unpredictably Increases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure at which latent heat of vaporisation is zero is 225.65 kgf/ cm² 100 kgf/ cm² 273 kgf/ cm² 1 kgf/ cm² 225.65 kgf/ cm² 100 kgf/ cm² 273 kgf/ cm² 1 kgf/ cm² ANSWER DOWNLOAD EXAMIANS APP
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