Steam Boilers, Engines, Nozzles and Turbines In order to reduce the rotor speed of an impulse turbine, the method employed is All of these Velocity compounding Pressure compounding Pressure-velocity compounding All of these Velocity compounding Pressure compounding Pressure-velocity compounding ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure) p₂/p₁ p₁ + p₂ p₁. p₂ p₁/p₂ p₂/p₁ p₁ + p₂ p₁. p₂ p₁/p₂ ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The rate of steam produced in Benson boiler is 100 tonnes/h 175 tonnes/h 250 tonnes/h 135 tonnes/h 100 tonnes/h 175 tonnes/h 250 tonnes/h 135 tonnes/h ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The shell of the Cochran boiler is made hemispherical To withstand the pressure of steam inside the boiler None of these To give maximum space and strength Both (A) and (B) To withstand the pressure of steam inside the boiler None of these To give maximum space and strength Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In an impulse reaction turbine, the pressure drops gradually and continuously over Fixed blades Both fixed and moving blades None of these Moving blades Fixed blades Both fixed and moving blades None of these Moving blades ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the work-done on the blades per kg of steam to the total energy supplied per stage per kg of steam is called Mechanical efficiency Nozzle efficiency Stage efficiency Blading efficiency Mechanical efficiency Nozzle efficiency Stage efficiency Blading efficiency ANSWER DOWNLOAD EXAMIANS APP
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