Steam Boilers, Engines, Nozzles and Turbines By compounding the expansion of steam in two or more cylinders, the length of stroke Increases None of these Decreases Does not change Increases None of these Decreases Does not change ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines During polytropic process Steam may be wet, dry or superheated after expansion All of these Heat transfer takes place across cylinder walls Work is done Steam may be wet, dry or superheated after expansion All of these Heat transfer takes place across cylinder walls Work is done ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the cross-section of a nozzle increases continuously from entrance to exit, it is called a Divergent nozzle Convergent-divergent nozzle None of these Convergent nozzle Divergent nozzle Convergent-divergent nozzle None of these Convergent nozzle ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio (p₂/p₁) is given by (p₂/p₁) = [2/(n - 1)] n/(n + 1) (p₂/p₁) = [(n - 1)/2] n + (1/n) (p₂/p₁) = [(n + 1)/2] n - (1/n) (p₂/p₁) = [2/(n + 1)] n/(n-1) (p₂/p₁) = [2/(n - 1)] n/(n + 1) (p₂/p₁) = [(n - 1)/2] n + (1/n) (p₂/p₁) = [(n + 1)/2] n - (1/n) (p₂/p₁) = [2/(n + 1)] n/(n-1) ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised by a device known as Injector Pressure gauge Feed pump Feed check valve Injector Pressure gauge Feed pump Feed check valve ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Pulverized fuel is used for Medium sized units More calorific value Less radiation loss Better burning Medium sized units More calorific value Less radiation loss Better burning ANSWER DOWNLOAD EXAMIANS APP
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