Steam Boilers, Engines, Nozzles and Turbines The velocity of flue gases (V) through the chimney under a static draught of (H') metres is given by V = 2g H' V = 2gH' V = H'/2g V = 2g/H' V = 2g H' V = 2gH' V = H'/2g V = 2g/H' ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The cylindrical shell of a Lancashire boiler has diameter from 1.5 to 2.5 m 1.25 to 2.25 m 1 to 2 m 1.75 to 2.75 m 1.5 to 2.5 m 1.25 to 2.25 m 1 to 2 m 1.75 to 2.75 m ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which is not the correct statement about moisture in coal? In some coals moisture may be present up to 40% Some moisture in coal helps in better burning which is not possible with completely dry coal Inherent moisture and surface moisture are different things It increases thermal efficiency In some coals moisture may be present up to 40% Some moisture in coal helps in better burning which is not possible with completely dry coal Inherent moisture and surface moisture are different things It increases thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Relative percentage of heat absorbed through the heat transfer of(i) Furnace water wall(ii) Boiler tank(iii) Superheater(iv) Economizer(v) Air-heater of a typical boiler of 200 MW capacity would be of the order of 48 : 20 : 15 : 7 : 10 20 : 48 : 7 : 15 : 10 7 : 15 : 20 : 10 : 48 10 : 7 : 15 : 20 : 48 48 : 20 : 15 : 7 : 10 20 : 48 : 7 : 15 : 10 7 : 15 : 20 : 10 : 48 10 : 7 : 15 : 20 : 48 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Size of boiler tubes is specified by Outside diameter and thickness Inside diameter and thickness Outside diameter and inside diameter Mean diameter and thickness Outside diameter and thickness Inside diameter and thickness Outside diameter and inside diameter Mean diameter and thickness ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines With increase in load, radiant superheater has Linear characteristic Rising characteristic Drooping characteristic Flat characteristic Linear characteristic Rising characteristic Drooping characteristic Flat characteristic ANSWER DOWNLOAD EXAMIANS APP
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