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 Internally fired boiler Externally fired boiler Forced circulation boiler Natural circulation boiler Internally fired boiler Externally fired boiler Forced circulation boiler Natural circulation boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Willian’s line follows the law (where b = A constant representing the shape of the Willian’s line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour) I.P. = b × m + a m = a + b × I.P. m = (b/I.P.) - a I.P. = a × m + b I.P. = b × m + a m = a + b × I.P. m = (b/I.P.) - a I.P. = a × m + b ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The evaporation of 15.653 kg of water per hour from and at 100°C is called One boiler h.p. Factor of evaporation Evaporative capacity Equivalent evaporation One boiler h.p. Factor of evaporation Evaporative capacity Equivalent evaporation 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 Work is done during adiabatic expansion Flue gases pass through tubes and water around it Water passes through the tubes and flue gases around it Change in enthalpy Work is done during adiabatic expansion Flue gases pass through tubes and water around it ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio for gases is 0.582 0.577 0.546 0.528 0.582 0.577 0.546 0.528 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The function of a piston in a steam engine is To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment To transfer motion from the piston to the cross-head None of these To guide motion of the piston rod and to prevent it from bending To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment To transfer motion from the piston to the cross-head None of these To guide motion of the piston rod and to prevent it from bending ANSWER DOWNLOAD EXAMIANS APP
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