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 function of a piston in a steam engine is 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 id) to exhaust steam from the cylinder at proper moment None of these 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 id) to exhaust steam from the cylinder at proper moment None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines At which pressure the properties of water and steam become identical 1 kg/cm² 100 kg/cm² 0.1 kg/cm² 225.6 kg/cm² 1 kg/cm² 100 kg/cm² 0.1 kg/cm² 225.6 kg/cm² ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a reaction turbine, when steam flows through the moving blades, Pressure decreases while velocity increases Pressure increases while velocity decreases Pressure and velocity both increases Pressure and velocity both decreases Pressure decreases while velocity increases Pressure increases while velocity decreases Pressure and velocity both increases Pressure and velocity both decreases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The high pressure boiler is one, which produces steam at a pressure more than 5 kg/cm² 10 kg/cm² 7580 kg/cm² Atmospheric pressure 5 kg/cm² 10 kg/cm² 7580 kg/cm² Atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For combustion of a fuel, following is essential Proper ignition temperature All the three above O₂ to support combustion Correct fuel air ratio Proper ignition temperature All the three above O₂ to support combustion Correct fuel air ratio ANSWER DOWNLOAD EXAMIANS APP
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