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 = V cosα Vb = 0.5 V cosα Vb = V² cosα Vb = 0.5 V² cosα Vb = V cosα Vb = 0.5 V cosα Vb = V² cosα Vb = 0.5 V² cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Duplex feed pumps are used in small steam boilers. These operate on the principle of Gear pump Axial flow pump Reciprocating pump Centrifugal pump Gear pump Axial flow pump Reciprocating pump Centrifugal pump 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 p₂/p₁ p₁. p₂ p₁ + p₂ p₁/p₂ p₂/p₁ p₁. p₂ ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Cochran boiler is a Horizontal fire tube boiler Vertical water tube boiler Vertical fire tube boiler Horizontal water tube boiler Horizontal fire tube boiler Vertical water tube boiler Vertical fire tube boiler Horizontal water tube boiler ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A safety valve in a locomotive starts leaking. The leaking medium will be Water Dry steam Super heated steam Wet steam Water Dry steam Super heated steam Wet steam ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages. Less Same More None of these Less Same More None of these ANSWER DOWNLOAD EXAMIANS APP
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