Steam Boilers, Engines, Nozzles and Turbines The maximum discharge of steam through a convergent-divergent nozzle depends upon Area of nozzle at throat Both (A) and (B) Initial pressure and volume of steam Final pressure of steam leaving the nozzle Area of nozzle at throat Both (A) and (B) Initial pressure and volume of steam Final pressure of steam leaving the nozzle ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the circulation of water, in a boiler, is by convection currents which are set up during the heating of water, then the boiler is known as Forced circulation boiler Externally fired boiler Natural circulation boiler Internally fired boiler Forced circulation boiler Externally fired boiler Natural circulation boiler Internally fired boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Water tube boilers are those in which Water passes through the tubes and flue gases around it Change in enthalpy Flue gases pass through tubes and water around it Work is done during adiabatic expansion Water passes through the tubes and flue gases around it Change in enthalpy Flue gases pass through tubes and water around it Work is done during adiabatic expansion ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The flow of steam is supersonic At the throat of the nozzle In the divergent portion of the nozzle At the entrance to the nozzle In the convergent portion of the nozzle At the throat of the nozzle In the divergent portion of the nozzle At the entrance to the nozzle In the convergent portion of the nozzle ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the volume at cut-off to the swept volume is called Clearance ratio None of these Cut-off ratio Expansion ratio Clearance ratio None of these Cut-off ratio Expansion ratio ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Calorific value of coal is of the order of 200-400 kcal/ kg 2000-4000 kcal/ kg 800-1200 kcal/ kg 5000-8000 kcal/ kg 200-400 kcal/ kg 2000-4000 kcal/ kg 800-1200 kcal/ kg 5000-8000 kcal/ kg ANSWER DOWNLOAD EXAMIANS APP
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