Steam Boilers, Engines, Nozzles and Turbines For combustion of a fuel, following is essential All the three above Correct fuel air ratio O₂ to support combustion Proper ignition temperature All the three above Correct fuel air ratio O₂ to support combustion Proper ignition temperature ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A fusible plug is fitted in small boilers in order to Extinguish fire if water level in the boiler falls below alarming limit Control steam dome Avoid explosion Avoid excessive build up of pressure Extinguish fire if water level in the boiler falls below alarming limit Control steam dome Avoid explosion Avoid excessive build up of pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The power of a boiler may be defined as The evaporation of 15.653 kg of water per hour from and at 100° C The ratio of heat actually used in producing the steam to the heat liberated in the furnace The amount of water evaporated or steam produced in kg per kg of fuel burnt The amount of water evaporated from and at 100° C into dry and saturated steam The evaporation of 15.653 kg of water per hour from and at 100° C The ratio of heat actually used in producing the steam to the heat liberated in the furnace The amount of water evaporated or steam produced in kg per kg of fuel burnt The amount of water evaporated from and at 100° C into dry and saturated steam ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A steam turbine, in which a part of the steam after partial expansion, is used for process heating and the remaining steam is further expanded for power generation, is known as Pass out turbine Back pressure turbine Impulse turbine Low pressure turbine Pass out turbine Back pressure turbine Impulse turbine Low pressure turbine ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Efficiency of Rankine cycle can be increased by Decreasing initial steam pressure and temperature Decreasing exhausts pressure Increasing the expansion ratio Increasing exhaust pressure Decreasing initial steam pressure and temperature Decreasing exhausts pressure Increasing the expansion ratio Increasing exhaust pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Water tube boilers are those in which 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 Work is done during adiabatic expansion ANSWER DOWNLOAD EXAMIANS APP
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