Steam Boilers, Engines, Nozzles and Turbines Calorific value of coal is of the order of 200-400 kcal/ kg 5000-8000 kcal/ kg 2000-4000 kcal/ kg 800-1200 kcal/ kg 200-400 kcal/ kg 5000-8000 kcal/ kg 2000-4000 kcal/ kg 800-1200 kcal/ kg ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The fire tubes in a Scotch marine boiler are Horizontal None of the listed here Inclined Vertical Horizontal None of the listed here Inclined Vertical ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Reheating of steam under ideal conditions takes place at constant Pressure Entropy Temperature Enthalpy Pressure Entropy Temperature Enthalpy ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle is said to be Choked Under-damping Over-damping None of these Choked Under-damping Over-damping None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The draught in locomotive boilers is produced by a Chimney Centrifugal fan None of these Steam jet Chimney Centrifugal fan None of these Steam jet 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
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