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 Mechanical efficiency Nozzle efficiency Blading efficiency Gross or stage efficiency Mechanical efficiency Nozzle efficiency Blading efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The maximum discharge through a chimney occurs when the height of chimney is Around 200 meters Infinitely long Outside temperature is very low Equal to the height of the hot gas column producing draught Around 200 meters Infinitely long Outside temperature is very low Equal to the height of the hot gas column producing draught 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 /88.25H 176.5H/T1 88.25H/T1 T1 /176.5H T1 /88.25H 176.5H/T1 88.25H/T1 T1 /176.5H ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The high pressure and low pressure cylinders in a receiver type compound engine are regarded as having cranks None of these 180° to each other 0° to each other 90° to each other None of these 180° to each other 0° to each other 90° to each other ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Water tube boilers are those in which Change in enthalpy Work is done during adiabatic expansion Flue gases pass through tubes and water around it Water passes through the tubes and flue gases around it Change in enthalpy Work is done during adiabatic expansion Flue gases pass through tubes and water around it Water passes through the tubes and flue gases around it ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Green coal, in order to be burnt, must be Burnt in excess air Heated to its ignition point Heated sufficiently Burnt as powder Burnt in excess air Heated to its ignition point Heated sufficiently Burnt as powder ANSWER DOWNLOAD EXAMIANS APP
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