Steam Boilers, Engines, Nozzles and Turbines The power of a boiler may be defined as The ratio of heat actually used in producing the steam to the heat liberated in the furnace The evaporation of 15.653 kg of water per hour from and at 100° C 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 ratio of heat actually used in producing the steam to the heat liberated in the furnace The evaporation of 15.653 kg of water per hour from and at 100° C 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 In designing air preheaters, the important design consideration is that Handling and maintenance should be easier Stack gases should not be cooled to the dew point Heat transfer area should be optimum Approach temperature should be as low as possible Handling and maintenance should be easier Stack gases should not be cooled to the dew point Heat transfer area should be optimum Approach temperature should be as low as possible ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The safety valve on boiler drum compared to safety valve on superheater is set at Same value Lower value Higher value Lower/higher depending on steam flow Same value Lower value Higher value Lower/higher depending on steam flow 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 Externally fired boiler Natural circulation boiler Forced circulation boiler Internally fired boiler Externally fired boiler Natural circulation boiler Forced circulation boiler Internally fired boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder. None of the listed here Equal to More than Less than None of the listed here Equal to More than Less than ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of the plant __________ with the mechanical draught. None of these Increases Decreases Remains constant None of these Increases Decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
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