Steam Boilers, Engines, Nozzles and Turbines The ratio of the workdone on the blades to the energy supplied to the blades, is called Gross or stage efficiency Blading efficiency Mechanical efficiency Nozzle efficiency Gross or stage efficiency Blading efficiency Mechanical efficiency Nozzle efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A fusible plug is fitted in small boilers in order to 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 Extinguish fire if water level in the boiler falls below alarming limit Avoid excessive build up of pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The cylinder condensation or missing quantity may be reduced by All of these Keeping the expansion ratio small in each cylinder The efficient steam jacketing of the cylinder walls Superheating the steam supplied to the engine cylinder All of these Keeping the expansion ratio small in each cylinder The efficient steam jacketing of the cylinder walls Superheating the steam supplied to the engine cylinder ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Caking coals are those which Burn completely Burn freely Show little or no fusing action Form lumps or masses of coke Burn completely Burn freely Show little or no fusing action Form lumps or masses of coke 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) 176.5H/T1 T1 /88.25H 88.25H/T1 T1 /176.5H 176.5H/T1 T1 /88.25H 88.25H/T1 T1 /176.5H ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The artificial draught is produced by Centrifugal fan Both (A) and (B) Chimney Steam jet Centrifugal fan Both (A) and (B) Chimney Steam jet ANSWER DOWNLOAD EXAMIANS APP
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