Steam Boilers, Engines, Nozzles and Turbines An air preheater Enables low grade fuel to be burnt All of these Increases the efficiency of the boiler Increases evaporative capacity of the boiler Enables low grade fuel to be burnt All of these Increases the efficiency of the boiler Increases evaporative capacity of the boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The pressure at which latent heat of vaporisation of water is zero, is 1 kg/cm² 100 kg/cm² 225.6 kg/cm² Below atmospheric pressure 1 kg/cm² 100 kg/cm² 225.6 kg/cm² Below atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The actual power supplied by the engine crankshaft is called Brake power Indicated power None of these Frictional power Brake power Indicated power None of these Frictional power ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The numbers of fire tubes in a Cochran boiler are 115 225 165 75 115 225 165 75 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the isentropic heat drop to the heat supplied, is called Internal efficiency Stage efficiency Reheat factor Rankine efficiency Internal efficiency Stage efficiency Reheat factor Rankine efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines During polytropic process Steam may be wet, dry or superheated after expansion Work is done All of these Heat transfer takes place across cylinder walls Steam may be wet, dry or superheated after expansion Work is done All of these Heat transfer takes place across cylinder walls ANSWER DOWNLOAD EXAMIANS APP
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