Steam Boilers, Engines, Nozzles and Turbines Blow off cock in a boiler is used to Put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit Increase the temperature of saturated steam without raising its pressure Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required Empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler Put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit Increase the temperature of saturated steam without raising its pressure Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required Empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts. and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is 0.8 0.25 0.5 0.4 0.8 0.25 0.5 0.4 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The major axis of elliptical manholes on the shell should be provided On dished end Longitudinally Anywhere Circumferentially On dished end Longitudinally Anywhere Circumferentially ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio for gases is 0.546 0.577 0.582 0.528 0.546 0.577 0.582 0.528 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The flow of steam is supersonic In the divergent portion of the nozzle At the throat of the nozzle In the convergent portion of the nozzle At the entrance to the nozzle In the divergent portion of the nozzle At the throat of the nozzle In the convergent portion of the nozzle At the entrance to the nozzle 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. Evaporative capacity Equivalent evaporation Factor of evaporation One boiler h.p. Evaporative capacity Equivalent evaporation Factor of evaporation ANSWER DOWNLOAD EXAMIANS APP
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