Steam Boilers, Engines, Nozzles and Turbines Fire tube boilers are Internally as well as externally fired Internally fired Externally fired None of these Internally as well as externally fired Internally fired Externally fired None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The pressure at which latent heat of vaporisation of water is zero, is 100 kg/cm² 225.6 kg/cm² Below atmospheric pressure 1 kg/cm² 100 kg/cm² 225.6 kg/cm² Below atmospheric pressure 1 kg/cm² ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is known as Air-preheater Injector Superheater Economizer Air-preheater Injector Superheater Economizer ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a boiler, the heat is lost All of these In moisture present in the fuel To steam formed by combustion of hydrogen per kg of fuel To dry flue gases All of these In moisture present in the fuel To steam formed by combustion of hydrogen per kg of fuel To dry flue gases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle) Vb = V² cosα Vb = 0.5 V² cosα Vb = V cosα Vb = 0.5 V cosα Vb = V² cosα Vb = 0.5 V² cosα Vb = V cosα Vb = 0.5 V cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle. Remain same Increases None of these Decreases Remain same Increases None of these Decreases ANSWER DOWNLOAD EXAMIANS APP
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