Steam Boilers, Engines, Nozzles and Turbines In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from engine Locomotive boiler Lancashire boiler Babcock and Wilcox boiler Benson boiler Locomotive boiler Lancashire boiler Babcock and Wilcox boiler Benson boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The air pressure at the fuel bed is reduced below that of atmosphere by means of a fan placed at or near the bottom of the chimney to produce a draught. Such a draught is called Induced draught Balanced draught Natural draught Forced draught Induced draught Balanced draught Natural draught Forced draught ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines An ideal regenerative cycle is Could be anything More than Carnot cycle Equal to Carnot cycle Less than Carnot cycle Could be anything More than Carnot cycle Equal to Carnot cycle Less than Carnot cycle ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a reaction turbine, when steam flows through the moving blades, Pressure decreases while velocity increases Pressure and velocity both increases Pressure increases while velocity decreases Pressure and velocity both decreases Pressure decreases while velocity increases Pressure and velocity both increases Pressure increases while velocity decreases Pressure and velocity both decreases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity ‘V’ at inlet) Vb = V cos α Vb = 0.5 V cosα Vb = V² cos α Vb = 0.5 V² cosα Vb = V cos α Vb = 0.5 V cosα Vb = V² cos α Vb = 0.5 V² cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For combustion of a fuel, following is essential Correct fuel air ratio Proper ignition temperature All the three above O₂ to support combustion Correct fuel air ratio Proper ignition temperature All the three above O₂ to support combustion ANSWER DOWNLOAD EXAMIANS APP
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