Steam Boilers, Engines, Nozzles and Turbines The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called Fusible plug Water level indicator Safety valve Pressure gauge Fusible plug Water level indicator Safety valve Pressure gauge ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The height of chimney in a power plant is governed by Limitation of construction facilities The draft to be created Control of pollution Quantity of flue gases to be handled Limitation of construction facilities The draft to be created Control of pollution Quantity of flue gases to be handled ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a De-Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, pā) will be 8.2 bar 9.9 bar 3.3 bar 5.46 bar 8.2 bar 9.9 bar 3.3 bar 5.46 bar ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Water boils when its vapor pressure Equals that of the surroundings Equals 760 mm of mercury Equals to atmospheric pressure Equals the pressure of water in the container Equals that of the surroundings Equals 760 mm of mercury Equals to atmospheric pressure Equals the pressure of water in the container ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The friction present between the steam and the nozzle surfaces reduces the heat drop by 15 to 25% 25 to 40% 10 to 15% 40 to 60% 15 to 25% 25 to 40% 10 to 15% 40 to 60% ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A condenser in a steam power plant Increases expansion ratio of steam All of these Reduces temperature of exhaust steam Reduces back pressure of steam Increases expansion ratio of steam All of these Reduces temperature of exhaust steam Reduces back pressure of steam ANSWER DOWNLOAD EXAMIANS APP
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