Steam Boilers, Engines, Nozzles and Turbines An air preheater Increases the efficiency of the boiler Increases evaporative capacity of the boiler All of these Enables low grade fuel to be burnt Increases the efficiency of the boiler Increases evaporative capacity of the boiler All of these Enables low grade fuel to be burnt ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The maximum discharge of steam through a convergent-divergent nozzle depends upon Area of nozzle at throat Both (A) and (B) Final pressure of steam leaving the nozzle Initial pressure and volume of steam Area of nozzle at throat Both (A) and (B) Final pressure of steam leaving the nozzle Initial pressure and volume of steam ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the actual vacuum to the ideal vacuum in a condenser is called Vacuum efficiency Condenser efficiency Nozzle efficiency Boiler efficiency Vacuum efficiency Condenser efficiency Nozzle efficiency Boiler efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle) V = 44.72 K hd V = 44.72 hd K V = 44.72 K hd V = 44.72 K hd V = 44.72 K hd V = 44.72 hd K V = 44.72 K hd V = 44.72 K hd ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In which of the following boilers, the draught in furnace is increased by utilising exhaust steam from engine Locomotive boiler Babcock and Wilcox boiler Benson boiler Lancashire boiler Locomotive boiler Babcock and Wilcox boiler Benson boiler Lancashire boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When steam after doing work in the cylinder passes into a condenser, the engine is said to be a Slow speed engine Condensing steam engine Vertical steam engine Non-condensing steam engine Slow speed engine Condensing steam engine Vertical steam engine Non-condensing steam engine ANSWER DOWNLOAD EXAMIANS APP
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