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 With increase in load, radiant superheater has Rising characteristic Linear characteristic Flat characteristic Drooping characteristic Rising characteristic Linear characteristic Flat characteristic Drooping characteristic ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The cylinder condensation or missing quantity may be reduced by Superheating the steam supplied to the engine cylinder The efficient steam jacketing of the cylinder walls All of these Keeping the expansion ratio small in each cylinder Superheating the steam supplied to the engine cylinder The efficient steam jacketing of the cylinder walls All of these Keeping the expansion ratio small in each cylinder ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In locomotive boiler, maximum steam pressure is limited to 10 kg/cm² 1 kg/cm² 18 kg/cm² 5 kg/cm² 10 kg/cm² 1 kg/cm² 18 kg/cm² 5 kg/cm² ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The numbers of fire tubes in a Cochran boiler are 75 225 115 165 75 225 115 165 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The change in internal energy in steam engines equals to Work done during adiabatic expansion Work done during compression Change in enthalpy Work done during the Rankine cycle Work done during adiabatic expansion Work done during compression Change in enthalpy Work done during the Rankine cycle ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS