Steam Boilers, Engines, Nozzles and Turbines Water boils when its vapor pressure Equals 760 mm of mercury Equals that of the surroundings Equals the pressure of water in the container Equals to atmospheric pressure Equals 760 mm of mercury Equals that of the surroundings Equals the pressure of water in the container Equals to atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio for initially wet steam is 0.582 0.546 0.601 0.577 0.582 0.546 0.601 0.577 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the energy required to produce the artificial draught (expressed in meters head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as Efficiency of the boiler Efficiency of the chimney Efficiency of the fan Power of the boiler Efficiency of the boiler Efficiency of the chimney Efficiency of the fan Power of the boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Locomotive boiler is a Multi-tubular, horizontal, internally fired and mobile boiler Multi-tubular, horizontal, externally fired and stationary boiler Single tube, horizontal, internally fired and stationary boiler Single tube, vertical, externally fired and stationary boiler Multi-tubular, horizontal, internally fired and mobile boiler Multi-tubular, horizontal, externally fired and stationary boiler Single tube, horizontal, internally fired and stationary boiler Single tube, vertical, externally fired and stationary boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In designing air preheaters, the important design consideration is that Heat transfer area should be optimum Handling and maintenance should be easier Approach temperature should be as low as possible Stack gases should not be cooled to the dew point Heat transfer area should be optimum Handling and maintenance should be easier Approach temperature should be as low as possible Stack gases should not be cooled to the dew point ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Green coal, in order to be burnt, must be Burnt as powder Heated sufficiently Heated to its ignition point Burnt in excess air Burnt as powder Heated sufficiently Heated to its ignition point Burnt in excess air ANSWER DOWNLOAD EXAMIANS APP
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