Steam Boilers, Engines, Nozzles and Turbines Tertiary air is the air used to Transport and dry the coal Cool the scanners Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Provide air around burners for obtaining optimum combustion Transport and dry the coal Cool the scanners Convert CO (formed in lower zone of furnace) into CO₂ at higher zone Provide air around burners for obtaining optimum combustion ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K) T1 /176.5H 88.25H/T1 T1 /88.25H 176.5H/T1 T1 /176.5H 88.25H/T1 T1 /88.25H 176.5H/T1 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A fusible plug is fitted in small boilers in order to Extinguish fire if water level in the boiler falls below alarming limit Avoid excessive build up of pressure Control steam dome Avoid explosion Extinguish fire if water level in the boiler falls below alarming limit Avoid excessive build up of pressure Control steam dome Avoid explosion ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The flow through a nozzle is regarded as Constant volume flow Constant pressure flow Isothermal flow Isentropic flow Constant volume flow Constant pressure flow Isothermal flow Isentropic flow ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio for initially wet steam is 0.577 0.582 0.601 0.546 0.577 0.582 0.601 0.546 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The draught may be produced by a All of these Mechanical fan Chimney A steam jet All of these Mechanical fan Chimney A steam jet ANSWER DOWNLOAD EXAMIANS APP
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