Steam Boilers, Engines, Nozzles and Turbines During polytropic process Heat transfer takes place across cylinder walls Steam may be wet, dry or superheated after expansion Work is done All of these Heat transfer takes place across cylinder walls Steam may be wet, dry or superheated after expansion Work is done All of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The Locomotive boiler has 167 fire tubes and 14 superheated tubes 137 fire tubes and 44 superheated tubes 147 fire tubes and 34 superheated tubes 157 fire tubes and 24 superheated tubes 167 fire tubes and 14 superheated tubes 137 fire tubes and 44 superheated tubes 147 fire tubes and 34 superheated tubes 157 fire tubes and 24 superheated tubes ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The friction in the nozzle __________ exit velocity of steam. Increases Decreases None of these Has no effect on Increases Decreases None of these Has no effect on ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Steam in water tube boiler as compared to fire tube boiler Is raised at same rate Is raised at slower rate Could be raised at fast/slow rate depending on design Can be raised rapidly Is raised at same rate Is raised at slower rate Could be raised at fast/slow rate depending on design Can be raised rapidly ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure compounded impulse turbine. More Same Less None of these More Same Less None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Water tube boilers are those in which Work is done during adiabatic expansion Change in enthalpy Water passes through the tubes and flue gases around it Flue gases pass through tubes and water around it Work is done during adiabatic expansion Change in enthalpy Water passes through the tubes and flue gases around it Flue gases pass through tubes and water around it ANSWER DOWNLOAD EXAMIANS APP
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