Steam Boilers, Engines, Nozzles and Turbines The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised by a device known as Injector Feed check valve Feed pump Pressure gauge Injector Feed check valve Feed pump Pressure gauge ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which of the following is correct? (Where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor) pa = pm + K pa = K/pm pa = pm/K pa = pm × K pa = pm + K pa = K/pm pa = pm/K pa = pm × K ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Calorific value of coal is of the order of 2000-4000 kcal/ kg 200-400 kcal/ kg 5000-8000 kcal/ kg 800-1200 kcal/ kg 2000-4000 kcal/ kg 200-400 kcal/ kg 5000-8000 kcal/ kg 800-1200 kcal/ kg ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will Worsen May improve/worsen depending on size Improve Remain unaffected Worsen May improve/worsen depending on size Improve Remain unaffected ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In an impulse turbine The steam is expanded in moving blades only The pressure and temperature of steam remains constant The steam is expanded both in fixed and moving blades continuously The steam is expanded in nozzles only and there is a pressure drop and heat drop The steam is expanded in moving blades only The pressure and temperature of steam remains constant The steam is expanded both in fixed and moving blades continuously The steam is expanded in nozzles only and there is a pressure drop and heat drop ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The diameters of fire tubes and superheater tubes in locomotive boiler are 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 32.5 mm, 180 mm 24.5 mm, 65 mm 47.5 mm, 130 mm ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS