Steam Boilers, Engines, Nozzles and Turbines Duplex feed pumps are used in small steam boilers. These operate on the principle of Gear pump Axial flow pump Centrifugal pump Reciprocating pump Gear pump Axial flow pump Centrifugal pump Reciprocating pump ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines During polytropic process All of these Heat transfer takes place across cylinder walls Work is done Steam may be wet, dry or superheated after expansion All of these Heat transfer takes place across cylinder walls Work is done Steam may be wet, dry or superheated after expansion ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the volume at cut-off to the swept volume is called Expansion ratio Clearance ratio None of these Cut-off ratio Expansion ratio Clearance ratio None of these Cut-off ratio ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The air pressure at the fuel bed is reduced below that of atmosphere by means of a fan placed at or near the bottom of the chimney to produce a draught. Such a draught is called Natural draught Induced draught Forced draught Balanced draught Natural draught Induced draught Forced draught Balanced draught ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor of evaporation is given by (h + hf1)/2257 (h × hf1)/2257 (h - hf1)/2257 None of these (h + hf1)/2257 (h × hf1)/2257 (h - hf1)/2257 None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The difference of supersaturated temperature and saturation temperature at that pressure is called Degree of under-cooling Degree of superheat None of the listed here Degree of super-saturation Degree of under-cooling Degree of superheat None of the listed here Degree of super-saturation ANSWER DOWNLOAD EXAMIANS APP
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