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 = 0.5 V cosα 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 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio for initially superheated steam is __________ as compared to initially dry saturated steam. Same Less None of these More Same Less None of these More ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Pick up the wrong statement about critical condition of steam Latent heat is zero This is the maximum pressure limit Specific volume of steam and liquid is same Liquid directly becomes steam Latent heat is zero This is the maximum pressure limit Specific volume of steam and liquid is same Liquid directly becomes steam ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the clearance volume to the swept volume is called None of these Expansion ratio Clearance ratio Cut-off ratio None of these Expansion ratio Clearance ratio Cut-off ratio ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Locomotive type' boiler is Vertical tubular fire tube type Horizontal multi-tubular water tube boiler Horizontal multi-tubular fire tube type Water wall enclosed furnace type Vertical tubular fire tube type Horizontal multi-tubular water tube boiler Horizontal multi-tubular fire tube type Water wall enclosed furnace type ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The function of injector used in small steam plants is to Dose chemicals in feed water Create vacuum in furnace Pump feed water Create vacuum at turbine exhaust Dose chemicals in feed water Create vacuum in furnace Pump feed water Create vacuum at turbine exhaust ANSWER DOWNLOAD EXAMIANS APP
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