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 = 0.5 V² cosα Vb = V² cos α Vb = 0.5 V cosα Vb = V cos α Vb = 0.5 V² cosα Vb = V² cos α Vb = 0.5 V cosα Vb = V cos α ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The length of Lancashire boiler varies from 7.25 to 9 m 6 to 7 m 5 to 6 m 9 to 10 m 7.25 to 9 m 6 to 7 m 5 to 6 m 9 to 10 m ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The impulse reaction turbine has its driving force Partly as an impulsive force and partly as a reaction force None of the listed here As a reaction force As an impulsive force Partly as an impulsive force and partly as a reaction force None of the listed here As a reaction force As an impulsive force ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The indicated thermal efficiency is defined as the Ratio of brake power to the indicated power Product of thermal efficiency and Rankine efficiency Ratio of heat equivalent to indicated power to the energy supplied in steam Ratio of thermal efficiency to the Rankine efficiency Ratio of brake power to the indicated power Product of thermal efficiency and Rankine efficiency Ratio of heat equivalent to indicated power to the energy supplied in steam Ratio of thermal efficiency to the Rankine efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit. Safety valve Fusible plug Stop valve Blow off cock Safety valve Fusible plug Stop valve Blow off cock ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The cylinder dimensions of a compound engine may be designed on the basis of Equal initial piston loads on all pistons for obtaining same size of piston rod, connecting rod etc. for all cylinders Equal temperature drop in each cylinder for economy of steam Equal power developed in each cylinder for uniform turning moment All of these Equal initial piston loads on all pistons for obtaining same size of piston rod, connecting rod etc. for all cylinders Equal temperature drop in each cylinder for economy of steam Equal power developed in each cylinder for uniform turning moment All of these ANSWER DOWNLOAD EXAMIANS APP
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