Steam Boilers, Engines, Nozzles and Turbines The pressure at which latent heat of vaporisation of water is zero, is Below atmospheric pressure 225.6 kg/cm² 1 kg/cm² 100 kg/cm² Below atmospheric pressure 225.6 kg/cm² 1 kg/cm² 100 kg/cm² ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a throttling process Steam enthalpy remains constant Steam entropy remains constant Steam temperature remains constant Steam pressure remains constant Steam enthalpy remains constant Steam entropy remains constant Steam temperature remains constant Steam pressure remains constant 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 V cosα Vb = V cosα Vb = V² cosα Vb = 0.5 V² cosα Vb = 0.5 V cosα Vb = V cosα Vb = V² cosα Vb = 0.5 V² cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The basic purpose of drum in boiler is to Separate steam from water Serve as storage of steam Serve as storage of feed water for water wall Remove salts from water Separate steam from water Serve as storage of steam Serve as storage of feed water for water wall Remove salts from water ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called Woolf type compound engine Tandem type compound engine Both (A) and (B) Receiver type compound engine Woolf type compound engine Tandem type compound engine Both (A) and (B) Receiver type compound engine ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The safety valve on boiler drum compared to safety valve on superheater is set at Higher value Lower value Same value Lower/higher depending on steam flow Higher value Lower value Same value Lower/higher depending on steam flow ANSWER DOWNLOAD EXAMIANS APP
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