Steam Boilers, Engines, Nozzles and Turbines Duplex feed pumps are used in small steam boilers. These operate on the principle of Axial flow pump Reciprocating pump Gear pump Centrifugal pump Axial flow pump Reciprocating pump Gear pump Centrifugal pump ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The density of supersaturated steam is about __________ that of the ordinary saturated vapor at the corresponding pressure. 2 times 4 times Same as 8 times 2 times 4 times Same as 8 times ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as Cut-off governing None of these By-pass governing Throttle governing Cut-off governing None of these By-pass governing Throttle governing ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the useful heat drop to the isentropic heat drop is called Vacuum efficiency Nozzle efficiency Boiler efficiency Condenser efficiency Vacuum efficiency Nozzle efficiency Boiler efficiency Condenser efficiency 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, p₂) will be 9.9 bar 5.46 bar 8.2 bar 3.3 bar 9.9 bar 5.46 bar 8.2 bar 3.3 bar ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Secondary air is the air used to Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Provide air around burners for obtaining optimum combustion Air delivered by induced draft fan Transport and dry the coal Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Provide air around burners for obtaining optimum combustion Air delivered by induced draft fan Transport and dry the coal ANSWER DOWNLOAD EXAMIANS APP
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