Steam Boilers, Engines, Nozzles and Turbines In an impulse turbine 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 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 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The specific volume of steam with increase in pressure decreases Slowly first and then rapidly Inversely Rapidly first and then slowly Linearly Slowly first and then rapidly Inversely Rapidly first and then slowly Linearly ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity ‘V’ at inlet) Vb = 0.5 V² cosα Vb = V² cos α Vb = V cos α Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V² cos α Vb = V cos α Vb = 0.5 V cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Gradually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication of Fouling of heat transfer surfaces High calorific value coal being burnt Raising of steam temperature Higher effectiveness of boiler Fouling of heat transfer surfaces High calorific value coal being burnt Raising of steam temperature Higher effectiveness of boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Parson's turbine is a Simple impulse turbine None of these Impulse-reaction turbine Simple reaction turbine Simple impulse turbine None of these Impulse-reaction turbine Simple reaction turbine ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines At very low temperature, the melting and boiling temperatures become equal. This temperature is 273.16°K 0°K 373°K 303°K 273.16°K 0°K 373°K 303°K ANSWER DOWNLOAD EXAMIANS APP
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