Steam Boilers, Engines, Nozzles and Turbines The economiser is used in boilers to Extract heat from the exhaust flue gases Increase flue gas temperature Economize on fuel Increase thermal efficiency of boiler Extract heat from the exhaust flue gases Increase flue gas temperature Economize on fuel Increase thermal efficiency of boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The cylindrical shell of a Lancashire boiler has diameter from 1.75 to 2.75 m 1.5 to 2.5 m 1 to 2 m 1.25 to 2.25 m 1.75 to 2.75 m 1.5 to 2.5 m 1 to 2 m 1.25 to 2.25 m ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Expanding steam to a very low pressure (high vacuum) in steam engines is Uneconomical Desirable Essential Economical Uneconomical Desirable Essential Economical ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Reheating of steam in a turbine All of these Reduces wear on the blades Increases the work-done through the turbine Increases the efficiency of the turbine All of these Reduces wear on the blades Increases the work-done through the turbine Increases the efficiency of the turbine ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Locomotive boiler is a Single tube, horizontal, internally fired and stationary boiler Multi-tubular, horizontal, internally fired and mobile boiler Single tube, vertical, externally fired and stationary boiler Multi-tubular, horizontal, externally fired and stationary boiler Single tube, horizontal, internally fired and stationary boiler Multi-tubular, horizontal, internally fired and mobile boiler Single tube, vertical, externally fired and stationary boiler Multi-tubular, horizontal, externally fired and stationary boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Ultimate analysis of fuel is determination of percentage of Lower calorific value Fixed carbon, ash, volatile matter, moisture Higher calorific value Carbon, hydrogen, nitrogen, sulphur, moisture Lower calorific value Fixed carbon, ash, volatile matter, moisture Higher calorific value Carbon, hydrogen, nitrogen, sulphur, moisture ANSWER DOWNLOAD EXAMIANS APP
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