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) = [2/(n + 1)] n/(n-1) (p₂/p₁) = [(n - 1)/2] n + (1/n) (p₂/p₁) = [2/(n - 1)] n/(n + 1) (p₂/p₁) = [(n + 1)/2] n - (1/n) (p₂/p₁) = [2/(n + 1)] n/(n-1) (p₂/p₁) = [(n - 1)/2] n + (1/n) ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of the plant __________ with the mechanical draught. Increases Remains constant None of these Decreases Increases Remains constant None of these Decreases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Expanding steam to a very low pressure (high vacuum) in steam engines is Uneconomical Economical Essential Desirable Uneconomical Economical Essential Desirable ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines On Mollier chart, flow through turbine is represented by Vertical straight line Horizontal straight line Curved line Straight inclined line Vertical straight line Horizontal straight line Curved line Straight inclined line ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The draught in locomotive boilers is produced by a Centrifugal fan None of these Chimney Steam jet Centrifugal fan None of these Chimney Steam jet ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Calorific value of coal is of the order of 800-1200 kcal/ kg 5000-8000 kcal/ kg 2000-4000 kcal/ kg 200-400 kcal/ kg 800-1200 kcal/ kg 5000-8000 kcal/ kg 2000-4000 kcal/ kg 200-400 kcal/ kg ANSWER DOWNLOAD EXAMIANS APP
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