Steam Boilers, Engines, Nozzles and Turbines A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be 188 m/s 900 m/s 79 m/s 450 m/s 188 m/s 900 m/s 79 m/s 450 m/s ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Gradually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication of High calorific value coal being burnt Higher effectiveness of boiler Raising of steam temperature Fouling of heat transfer surfaces High calorific value coal being burnt Higher effectiveness of boiler Raising of steam temperature Fouling of heat transfer surfaces 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 None of these (h × hf1)/2257 (h + hf1)/2257 (h - hf1)/2257 None of these (h × hf1)/2257 (h + hf1)/2257 (h - hf1)/2257 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The function of an eccentric rod is To convert rotary motion of the crankshaft into to and fro motion of the valve rod To provide reciprocating motion to the slide valve To provide simple harmonic motion to the D-slide valve To convert reciprocating motion of the piston into rotary motion of the crank To convert rotary motion of the crankshaft into to and fro motion of the valve rod To provide reciprocating motion to the slide valve To provide simple harmonic motion to the D-slide valve To convert reciprocating motion of the piston into rotary motion of the crank ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio for initially wet steam is 0.546 0.601 0.577 0.582 0.546 0.601 0.577 0.582 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Presence of moisture in fuel oil would Because sputtering, possibly extinguishing flame Aid in proper combustion Clean the nozzles Keep the burner tips cool Because sputtering, possibly extinguishing flame Aid in proper combustion Clean the nozzles Keep the burner tips cool ANSWER DOWNLOAD EXAMIANS APP
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