Steam Boilers, Engines, Nozzles and Turbines The equivalent evaporation is defined as 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 evaporation of 15.653 kg of water per hour from and at 100°C The ratio of heat actually used in producing the steam to the heat liberated in the furnace 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 evaporation of 15.653 kg of water per hour from and at 100°C The ratio of heat actually used in producing the steam to the heat liberated in the furnace ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio (p₂/p₁) is given by (p₂/p₁) = [(n + 1)/2] n - (1/n) (p₂/p₁) = [2/(n + 1)] n/(n-1) (p₂/p₁) = [(n - 1)/2] n + (1/n) (p₂/p₁) = [2/(n - 1)] n/(n + 1) (p₂/p₁) = [(n + 1)/2] n - (1/n) (p₂/p₁) = [2/(n + 1)] n/(n-1) (p₂/p₁) = [(n - 1)/2] n + (1/n) (p₂/p₁) = [2/(n - 1)] n/(n + 1) ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a reaction turbine, when steam flows through the fixed blades, Pressure and velocity both increases Pressure and velocity both decreases Pressure increases while velocity decreases Pressure decreases while velocity increases Pressure and velocity both increases Pressure and velocity both decreases Pressure increases while velocity decreases Pressure decreases while velocity increases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Size of boiler tubes is specified by Inside diameter and thickness Outside diameter and inside diameter Mean diameter and thickness Outside diameter and thickness Inside diameter and thickness Outside diameter and inside diameter Mean diameter and thickness Outside diameter and thickness ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The high pressure and low pressure cylinders in a receiver type compound engine are regarded as having cranks 180° to each other 90° to each other 0° to each other None of these 180° to each other 90° to each other 0° to each other None of these 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 = V² cos α Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V cos α Vb = V² cos α Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V cos α ANSWER DOWNLOAD EXAMIANS APP