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) = [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) ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has Heating surface depends on other parameters More heating surface Equal heating surface Less heating surface Heating surface depends on other parameters More heating surface Equal heating surface Less heating surface ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which type of boiler can meet rapid changes of load? Horizontal water tube type Vertical fire tube type Horizontal fire tube type Forced circulation type Horizontal water tube type Vertical fire tube type Horizontal fire tube type Forced circulation type ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is 4/3 kg 1 kg 2 kg 8/3 kg 4/3 kg 1 kg 2 kg 8/3 kg ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines An economiser _________ the steam raising capacity of a boiler. None of these Has no effect on Increases Decreases None of these Has no effect on Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The change in internal energy in steam engines equals to Change in enthalpy Work done during the Rankine cycle Work done during adiabatic expansion Work done during compression Change in enthalpy Work done during the Rankine cycle Work done during adiabatic expansion Work done during compression ANSWER DOWNLOAD EXAMIANS APP
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