Steam Boilers, Engines, Nozzles and Turbines The condition of steam in boiler drum is always Wet Dry Saturated Supersaturated Wet Dry Saturated Supersaturated 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
Steam Boilers, Engines, Nozzles and Turbines The draught produced by a steam jet issuing from a nozzle placed in the ash-pit under the fire grate of the furnace is called Induced steam jet draught Chimney draught Forced steam jet draught None of these Induced steam jet draught Chimney draught Forced steam jet draught None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as Forced circulation boiler Externally fired boiler Natural circulation boiler Internally fired boiler Forced circulation boiler Externally fired boiler Natural circulation boiler Internally fired boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Reheating of steam in a turbine Increases the efficiency of the turbine Increases the work-done through the turbine All of these Reduces wear on the blades Increases the efficiency of the turbine Increases the work-done through the turbine All of these Reduces wear on the blades ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The diameter of superheated tubes in a locomotive boiler is 130 mm 13 mm 31 mm 230 mm 130 mm 13 mm 31 mm 230 mm ANSWER DOWNLOAD EXAMIANS APP
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