Steam Boilers, Engines, Nozzles and Turbines The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle) Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V² cosα Vb = V cosα Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V² cosα Vb = V cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The rate of discharge through the nozzle ___ when the exit pressure is gradually reduced. Increases None of the listed here Decreases Remains same Increases None of the listed here Decreases Remains same ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The diameter of superheated tubes in a locomotive boiler is 13 mm 130 mm 230 mm 31 mm 13 mm 130 mm 230 mm 31 mm ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which of the following is not a boiler mounting? Economiser Fusible plug Blow off cock Feed check valve Economiser Fusible plug Blow off cock Feed check valve ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The mechanical draught _________ with the amount of smoke. Decreases Does not effect Increases None of these Decreases Does not effect Increases None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines On Millier chart, the constant pressure lines Are equally spaced throughout Diverge from right to left First rise up and then fall Diverge from left to right Are equally spaced throughout Diverge from right to left First rise up and then fall Diverge from left to right ANSWER DOWNLOAD EXAMIANS APP
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