Steam Boilers, Engines, Nozzles and Turbines The natural draught is produced by Centrifugal fan Steam jet Both (A) and (B) Chimney Centrifugal fan Steam jet Both (A) and (B) Chimney ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The feed check valve is used in order to Recirculate unwanted feed water Allow high pressure feed water to flow to drum and not allow reverse flow to take place Check level of water in boiler drum Regulate flow of boiler water Recirculate unwanted feed water Allow high pressure feed water to flow to drum and not allow reverse flow to take place Check level of water in boiler drum Regulate flow of boiler water ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of heat equivalent to brake power to the energy supplied in steam is known as Brake thermal efficiency Indicated thermal efficiency Mechanical efficiency Overall efficiency Brake thermal efficiency Indicated thermal efficiency Mechanical efficiency Overall efficiency ANSWER DOWNLOAD EXAMIANS APP
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 V² cosα Vb = 0.5 V cosα Vb = V² cosα Vb = V cosα Vb = 0.5 V² cosα Vb = 0.5 V cosα Vb = V² cosα Vb = V cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines During storage, the heating value of coal Remain constant Increases Decreases May increase or decrease depending upon the method of storage Remain constant Increases Decreases May increase or decrease depending upon the method of storage ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines All steam engines work on Second law of thermodynamics First law of thermodynamics Zeroth law of thermodynamics None of the listed here Second law of thermodynamics First law of thermodynamics Zeroth law of thermodynamics None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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