Steam Boilers, Engines, Nozzles and Turbines Sulphur content of fuels is very important to the plant operators because it Promotes complete combustion Retards electric precipitation Has highly corrosive effect Has high heating value Promotes complete combustion Retards electric precipitation Has highly corrosive effect Has high heating value ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The function of injector used in small capacity boilers is to Inject chemical solution in feed pump Pump water, similar to boiler feed pump Create vacuum Add make up water in the system Inject chemical solution in feed pump Pump water, similar to boiler feed pump Create vacuum Add make up water in the system ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The steam temperature with increase in load in case of a boiler fitted with radiation superheater Increases Decreases Remain unaffected First increases and then decreases Increases Decreases Remain unaffected First increases and then decreases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The maximum efficiency of a De-Laval turbine is (where α = Nozzle angle) sin²α cos²α cot²α tan²α sin²α cos²α cot²α tan²α 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 For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is _________ the piston speed of single acting steam engine. Three times Equal to Four times Twice Three times Equal to Four times Twice ANSWER DOWNLOAD EXAMIANS APP
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