Steam Boilers, Engines, Nozzles and Turbines Feed water conditioning in thermal power plants in done to Increase heat transfer rate Increase steam parameters Increase efficiency of thermal power plant Reduce hardness and for removal of solids Increase heat transfer rate Increase steam parameters Increase efficiency of thermal power plant Reduce hardness and for removal of solids ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a throttling process Steam pressure remains constant Steam entropy remains constant Steam enthalpy remains constant Steam temperature remains constant Steam pressure remains constant Steam entropy remains constant Steam enthalpy remains constant Steam temperature remains constant ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The theoretical indicator diagram of a simple steam engine is based upon the assumption that Steam is admitted at boiler pressure and exhausted at condenser pressure The expansion (or compression) of the steam is hyperbolic All of these There is no pressure drop due to condensation Steam is admitted at boiler pressure and exhausted at condenser pressure The expansion (or compression) of the steam is hyperbolic All of these There is no pressure drop due to condensation ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle) V = 44.72 hd K V = 44.72 K hd V = 44.72 K hd V = 44.72 K hd V = 44.72 hd K V = 44.72 K hd V = 44.72 K hd V = 44.72 K hd ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Green coal, in order to be burnt, must be Heated sufficiently Burnt as powder Heated to its ignition point Burnt in excess air Heated sufficiently Burnt as powder Heated to its ignition point Burnt in excess air ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Boiler stays are used to Provide support for boiler Take care of failure in compression Prevent flat surfaces under pressure from tearing apart Take care of failure in shear Provide support for boiler Take care of failure in compression Prevent flat surfaces under pressure from tearing apart Take care of failure in shear ANSWER DOWNLOAD EXAMIANS APP
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