Steam Boilers, Engines, Nozzles and Turbines The selection of type and size of a steam boiler depends upon The fuel and water available The geographical position of the power house The power required and working pressure All of these The fuel and water available The geographical position of the power house The power required and working pressure All of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Fire tube boilers are those in which Tubes are laid vertically Forced circulation takes place Water passes through the tubes and flue gases around it Flue gases pass through tubes and water around it Tubes are laid vertically Forced circulation takes place Water passes through the tubes and flue gases around it Flue gases pass through tubes and water around it ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The function of a piston rod is To transfer motion from the piston to the cross head To convert heat energy of the steam into mechanical work To exhaust steam from the cylinder at proper moment To guide motion of the piston rod and to prevent it from bending To transfer motion from the piston to the cross head To convert heat energy of the steam into mechanical work To exhaust steam from the cylinder at proper moment To guide motion of the piston rod and to prevent it from bending 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 Blades are equiangular Blade solidity is 0.65 Blades are equiangular and frictionless Blade velocity coefficient is unity Blades are equiangular Blade solidity is 0.65 Blades are equiangular and frictionless Blade velocity coefficient is unity 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 3.3 bar 5.46 bar 8.2 bar 9.9 bar 3.3 bar 5.46 bar 8.2 bar 9.9 bar ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The clearance in the engine cylinder Decreases the efficiency of the engine Increases the workdone All of these Increases the mean effective pressure Decreases the efficiency of the engine Increases the workdone All of these Increases the mean effective pressure ANSWER DOWNLOAD EXAMIANS APP
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