Steam Boilers, Engines, Nozzles and Turbines The cylinder dimensions of a compound engine may be designed on the basis of Equal power developed in each cylinder for uniform turning moment Equal temperature drop in each cylinder for economy of steam All of these Equal initial piston loads on all pistons for obtaining same size of piston rod, connecting rod etc. for all cylinders Equal power developed in each cylinder for uniform turning moment Equal temperature drop in each cylinder for economy of steam All of these Equal initial piston loads on all pistons for obtaining same size of piston rod, connecting rod etc. for all cylinders 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 It increases thermal efficiency Inherent moisture and surface moisture are different things 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 It increases thermal efficiency Inherent moisture and surface moisture are different things ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle) V = 44.72 K hd V = 44.72 K hd V = 44.72 hd K V = 44.72 K hd V = 44.72 K hd V = 44.72 K hd V = 44.72 hd K V = 44.72 K hd ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The diameter of a cylindrical shell of a Scotch marine boiler varies from 2.5 to 3.5 m 3.5 to 4.5 m None of these 1.5 to 2 m 2.5 to 3.5 m 3.5 to 4.5 m None of these 1.5 to 2 m ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a De-Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, p₂) will be 5.46 bar 3.3 bar 8.2 bar 9.9 bar 5.46 bar 3.3 bar 8.2 bar 9.9 bar ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The stage efficiency (ηS) is given by (where ηB = Blading efficiency, and ηN = Nozzle efficiency) ηS = ηN / ηB ηS = ηB × ηN None of the listed here ηS = ηB / ηN ηS = ηN / ηB ηS = ηB × ηN None of the listed here ηS = ηB / ηN ANSWER DOWNLOAD EXAMIANS APP
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