Steam Boilers, Engines, Nozzles and Turbines The ratio of total useful heat drop to the total isentropic heat drop, is called Rankine efficiency None of these Internal efficiency Stage efficiency Rankine efficiency None of these Internal efficiency Stage efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Gradually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication of High calorific value coal being burnt Fouling of heat transfer surfaces Raising of steam temperature Higher effectiveness of boiler High calorific value coal being burnt Fouling of heat transfer surfaces Raising of steam temperature Higher effectiveness of boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which is not correct statement about effect of sulphur in fuel? It has heating value It helps in electrostatic precipitation of ash in flue gases It erodes furnace walls It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low It has heating value It helps in electrostatic precipitation of ash in flue gases It erodes furnace walls It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Thermal equilibrium means that the flow of steam is Hyperbolic Isentropic Isothermal Polytropic Hyperbolic Isentropic Isothermal Polytropic ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be 0.56 0.4 0.67 1.67 0.56 0.4 0.67 1.67 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines An air preheater Increases evaporative capacity of the boiler All of these Increases the efficiency of the boiler Enables low grade fuel to be burnt Increases evaporative capacity of the boiler All of these Increases the efficiency of the boiler Enables low grade fuel to be burnt ANSWER DOWNLOAD EXAMIANS APP
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