Steam Boilers, Engines, Nozzles and Turbines When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as Throttle governing Cut-off governing None of these By-pass governing Throttle governing Cut-off governing None of these By-pass governing ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The aim of a compound steam engine is To reduce the length of stroke To reduce the ratio of expansion in each cylinder To reduce the temperature range in each cylinder All of these To reduce the length of stroke To reduce the ratio of expansion in each cylinder To reduce the temperature range in each cylinder All of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines With increase in load, convection superheater has Drooping characteristic Linear characteristic Flat characteristic Rising characteristic Drooping characteristic Linear characteristic Flat characteristic Rising characteristic 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 Stage efficiency Nozzle efficiency Blading efficiency Mechanical efficiency Stage efficiency Nozzle efficiency Blading efficiency Mechanical efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The rate of steam produced in Benson boiler is 250 tonnes/h 175 tonnes/h 135 tonnes/h 100 tonnes/h 250 tonnes/h 175 tonnes/h 135 tonnes/h 100 tonnes/h 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 p₂/p₁ p₁. p₂ p₁ + p₂ p₁/p₂ p₂/p₁ p₁. p₂ ANSWER DOWNLOAD EXAMIANS APP
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