Steam Boilers, Engines, Nozzles and Turbines At very low temperature, the melting and boiling temperatures become equal. This temperature is 0°K 273.16°K 373°K 303°K 0°K 273.16°K 373°K 303°K ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For combustion of a fuel, following is essential All the three above O₂ to support combustion Proper ignition temperature Correct fuel air ratio All the three above O₂ to support combustion Proper ignition temperature Correct fuel air ratio ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The overall efficiency of thermal power plant is Regenerative cycle efficiency Boiler efficiency, turbine efficiency, generator efficiency Carnot cycle efficiency All the three above plus gas cycle efficiency Regenerative cycle efficiency Boiler efficiency, turbine efficiency, generator efficiency Carnot cycle efficiency All the three above plus gas cycle efficiency ANSWER DOWNLOAD EXAMIANS APP
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 The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity ‘V’ at inlet) Vb = V cos α Vb = 0.5 V cosα Vb = V² cos α Vb = 0.5 V² cosα Vb = V cos α Vb = 0.5 V cosα Vb = V² cos α Vb = 0.5 V² cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The numbers of fire tubes in a Cochran boiler are 165 225 115 75 165 225 115 75 ANSWER DOWNLOAD EXAMIANS APP
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