Steam Boilers, Engines, Nozzles and Turbines The function of injector used in small capacity boilers is to Pump water, similar to boiler feed pump Create vacuum Inject chemical solution in feed pump Add make up water in the system Pump water, similar to boiler feed pump Create vacuum Inject chemical solution in feed pump Add make up water in the system ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The friction in the nozzle __________ exit velocity of steam. Decreases Increases Has no effect on None of these Decreases Increases Has no effect on None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure) p₁ + p₂ p₁/p₂ p₂/p₁ p₁. p₂ p₁ + p₂ p₁/p₂ p₂/p₁ p₁. p₂ ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines There is always some steam left in the clearance space from the previous stroke. This steam left in the clearance space is called Wet steam Saturated steam Cushion steam Superheated steam Wet steam Saturated steam Cushion steam Superheated steam ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Film boiling occurs at Medium pressures Very high pressures Atmospheric pressures Very low pressure Medium pressures Very high pressures Atmospheric pressures Very low pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The diameters of fire tubes and superheater tubes in locomotive boiler are 32.5 mm, 180 mm 24.5 mm, 65 mm 47.5 mm, 130 mm 65.5 mm, 210 mm 32.5 mm, 180 mm 24.5 mm, 65 mm 47.5 mm, 130 mm 65.5 mm, 210 mm ANSWER DOWNLOAD EXAMIANS APP
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