Steam Boilers, Engines, Nozzles and Turbines The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the Blade velocity coefficient is unity Blades are equiangular and frictionless Blades are equiangular Blade solidity is 0.65 Blade velocity coefficient is unity Blades are equiangular and frictionless Blades are equiangular Blade solidity is 0.65 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will Improve Remain unaffected May improve/worsen depending on size Worsen Improve Remain unaffected May improve/worsen depending on size Worsen ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The high steam and low water safety valve is used to blow off steam when the Steam pressure exceeds the working pressure None of these Water level in the boiler becomes too low Both (A) and (B) Steam pressure exceeds the working pressure None of these Water level in the boiler becomes too low Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of total useful heat drop to the total isentropic heat drop, is called Stage efficiency None of these Rankine efficiency Internal efficiency Stage efficiency None of these Rankine efficiency Internal efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle) Increases Decreases Remains constant None of these Increases Decreases Remains constant None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Pick up the wrong statement about critical condition of steam Liquid directly becomes steam Latent heat is zero Specific volume of steam and liquid is same This is the maximum pressure limit Liquid directly becomes steam Latent heat is zero Specific volume of steam and liquid is same This is the maximum pressure limit ANSWER DOWNLOAD EXAMIANS APP
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