Steam Boilers, Engines, Nozzles and Turbines A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is known as Superheater Injector Economizer Air-preheater Superheater Injector Economizer Air-preheater ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The value of the reheat factor varies from 1.6 to 2 1.02 to 1.06 1.08 to 1.10 1.2 to 1.6 1.6 to 2 1.02 to 1.06 1.08 to 1.10 1.2 to 1.6 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 9.9 bar 8.2 bar 3.3 bar 5.46 bar 9.9 bar 8.2 bar 3.3 bar 5.46 bar ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The compounding of turbines is done in order to All of these Improve efficiency Reduce speed of rotor Reduce exit losses All of these Improve efficiency Reduce speed of rotor Reduce exit losses ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure compounded impulse turbine. None of these Less More Same None of these Less More Same ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Duplex feed pumps are used in small steam boilers. These operate on the principle of Reciprocating pump Gear pump Axial flow pump Centrifugal pump Reciprocating pump Gear pump Axial flow pump Centrifugal pump ANSWER DOWNLOAD EXAMIANS APP
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