Steam Boilers, Engines, Nozzles and Turbines When the cross-section of a nozzle increases continuously from entrance to exit, it is called a None of these Convergent nozzle Divergent nozzle Convergent-divergent nozzle None of these Convergent nozzle Divergent nozzle Convergent-divergent nozzle ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines An economiser is generally placed between None of these Air preheater and chimney Last superheater or reheater and air preheater Induced draft fan and forced draft fan None of these Air preheater and chimney Last superheater or reheater and air preheater Induced draft fan and forced draft fan 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 = 0.5 V² cosα Vb = V² cos α Vb = V cos α Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V² cos α ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines An impulse turbine as compared to a reaction turbine, for a given power has _________ row of blades. None of these Less More Equal None of these Less More Equal ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines One kg of steam sample contains 0.8 kg dry steam? Its dryness fraction is 0.2 0.8 1 0.6 0.2 0.8 1 0.6 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure) p₁ + p₂ p₁/p₂ p₁. p₂ p₂/p₁ p₁ + p₂ p₁/p₂ p₁. p₂ p₂/p₁ ANSWER DOWNLOAD EXAMIANS APP
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