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 The overall efficiency of thermal power plant is Carnot cycle efficiency Boiler efficiency, turbine efficiency, generator efficiency Regenerative cycle efficiency All the three above plus gas cycle efficiency Carnot cycle efficiency Boiler efficiency, turbine efficiency, generator efficiency Regenerative cycle efficiency All the three above plus gas cycle efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the Blade solidity is 0.65 Blades are equiangular Blade velocity coefficient is unity Blades are equiangular and frictionless Blade solidity is 0.65 Blades are equiangular Blade velocity coefficient is unity Blades are equiangular and frictionless ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A wet vapor can be completely specified by Pressure and dryness fraction Pressure only Dryness fraction only Temperature only Pressure and dryness fraction Pressure only Dryness fraction only Temperature only ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines De-Laval turbine is a Impulse-reaction turbine Simple impulse turbine Simple reaction turbine None of these Impulse-reaction turbine Simple impulse turbine Simple reaction turbine None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Boiler stays are used to Prevent flat surfaces under pressure from tearing apart Provide support for boiler Take care of failure in compression Take care of failure in shear Prevent flat surfaces under pressure from tearing apart Provide support for boiler Take care of failure in compression Take care of failure in shear ANSWER DOWNLOAD EXAMIANS APP
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