Steam Boilers, Engines, Nozzles and Turbines In order to reduce the rotor speed of an impulse turbine, the method employed is Velocity compounding Pressure compounding All of these Pressure-velocity compounding Velocity compounding Pressure compounding All of these Pressure-velocity compounding ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The length of Lancashire boiler varies from 5 to 6 m 6 to 7 m 9 to 10 m 7.25 to 9 m 5 to 6 m 6 to 7 m 9 to 10 m 7.25 to 9 m ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Cut-off governing of steam engines is a method of controlling the engine output by varying Temperature of intake steam Volume of intake steam Pressure of intake steam All of these Temperature of intake steam Volume of intake steam Pressure of intake steam All of these 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) p₁ + p₂ p₁. p₂ p₁/p₂ p₂/p₁ p₁ + p₂ p₁. p₂ p₁/p₂ p₂/p₁ ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the workdone on the blades to the energy supplied to the blades, is called Nozzle efficiency Mechanical efficiency Gross or stage efficiency Blading efficiency Nozzle efficiency Mechanical efficiency Gross or stage efficiency Blading efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Thermal efficiency of well maintained boiler will be of the order 0.4 0.5 0.75 0.9 0.4 0.5 0.75 0.9 ANSWER DOWNLOAD EXAMIANS APP
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