Steam Boilers, Engines, Nozzles and Turbines The critical pressure gives the velocity of steam at the throat Less than the velocity of sound None of these Equal to the velocity of sound More than the velocity of sound Less than the velocity of sound None of these Equal to the velocity of sound More than the velocity of sound ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Efficiency of Rankine cycle can be increased by Decreasing exhausts pressure Increasing exhaust pressure Decreasing initial steam pressure and temperature Increasing the expansion ratio Decreasing exhausts pressure Increasing exhaust pressure Decreasing initial steam pressure and temperature Increasing the expansion ratio ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The mechanical draught _________ with the amount of smoke. None of these Decreases Does not effect Increases None of these Decreases Does not effect Increases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In an impulse reaction turbine, the pressure drops gradually and continuously over Fixed blades None of these Moving blades Both fixed and moving blades Fixed blades None of these Moving blades Both fixed and moving blades ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value 1 + moisture content 1 – moisture content (1 + moisture content) (1- moisture content) 1 + moisture content 1 – moisture content (1 + moisture content) (1- moisture content) ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines With increase in load, convection superheater has Flat characteristic Rising characteristic Linear characteristic Drooping characteristic Flat characteristic Rising characteristic Linear characteristic Drooping characteristic ANSWER DOWNLOAD EXAMIANS APP
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