Steam Boilers, Engines, Nozzles and Turbines The function of a piston rod is To convert heat energy of the steam into mechanical work To transfer motion from the piston to the cross head To guide motion of the piston rod and to prevent it from bending To exhaust steam from the cylinder at proper moment To convert heat energy of the steam into mechanical work To transfer motion from the piston to the cross head To guide motion of the piston rod and to prevent it from bending To exhaust steam from the cylinder at proper moment ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines By compounding the expansion of steam in two or more cylinders, the length of stroke Does not change Decreases None of these Increases Does not change Decreases None of these Increases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value (1- moisture content) (1 + moisture content) 1 – moisture content 1 + moisture content (1- moisture content) (1 + moisture content) 1 – moisture content 1 + moisture content ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The cylindrical shell of a Lancashire boiler has diameter from 1.25 to 2.25 m 1.5 to 2.5 m 1 to 2 m 1.75 to 2.75 m 1.25 to 2.25 m 1.5 to 2.5 m 1 to 2 m 1.75 to 2.75 m ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of heat equivalent to brake power to the energy supplied in steam is known as Overall efficiency Indicated thermal efficiency Brake thermal efficiency Mechanical efficiency Overall efficiency Indicated thermal efficiency Brake thermal efficiency Mechanical efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The evaporation of 15.653 kg of water per hour from and at 100°C is called One boiler h.p. Evaporative capacity Equivalent evaporation Factor of evaporation One boiler h.p. Evaporative capacity Equivalent evaporation Factor of evaporation ANSWER DOWNLOAD EXAMIANS APP
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