Steam Boilers, Engines, Nozzles and Turbines Duplex feed pumps are used in small steam boilers. These operate on the principle of Axial flow pump Gear pump Reciprocating pump Centrifugal pump Axial flow pump Gear pump Reciprocating pump Centrifugal pump ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The three "Ts" for good combustion are Total air, time, and temperature Temperature, time, and turbulence Thorough mixing, total air and temperature Total air, true fuel, and turbulence Total air, time, and temperature Temperature, time, and turbulence Thorough mixing, total air and temperature Total air, true fuel, and turbulence ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Cochran boiler is a Vertical fire tube boiler Horizontal water tube boiler Horizontal fire tube boiler Vertical water tube boiler Vertical fire tube boiler Horizontal water tube boiler Horizontal fire tube boiler Vertical water tube boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A safety valve mainly used with locomotive and marine boilers is Spring loaded safety valve Dead weight safety valve High steam and low water safety valve Lever safety valve Spring loaded safety valve Dead weight safety valve High steam and low water safety valve Lever safety valve ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The principal function of a stop valve is to Put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit Empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler Increase the temperature of saturated steam without raising its pressure Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required Put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit Empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler Increase the temperature of saturated steam without raising its pressure Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value (1- moisture content) (1 + moisture content) 1 + moisture content 1 – moisture content (1- moisture content) (1 + moisture content) 1 + moisture content 1 – moisture content ANSWER DOWNLOAD EXAMIANS APP
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