Steam Boilers, Engines, Nozzles and Turbines The crown of the fire box is made hemispherical in order to Withstand pressure inside boiler Give maximum strength Resist intense heat in fire box Give maximum space Withstand pressure inside boiler Give maximum strength Resist intense heat in fire box Give maximum space ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A steam nozzle converts Kinetic energy into heat energy of steam Heat energy of steam into potential energy Heat energy of steam into kinetic energy Potential energy into heat energy of steam Kinetic energy into heat energy of steam Heat energy of steam into potential energy Heat energy of steam into kinetic energy Potential energy into heat energy of steam 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 = V cosα Vb = 0.5 V² cosα Vb = V² cosα Vb = 0.5 V cosα Vb = V cosα Vb = 0.5 V² cosα Vb = V² cosα Vb = 0.5 V cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The discharge is __________ at critical pressure. None of these Minimum Maximum Zero None of these Minimum Maximum Zero ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the isentropic heat drop to the heat supplied, is called Stage efficiency Rankine efficiency Reheat factor Internal efficiency Stage efficiency Rankine efficiency Reheat factor Internal efficiency ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The theoretical indicator diagram of a simple steam engine is based upon the assumption that Steam is admitted at boiler pressure and exhausted at condenser pressure The expansion (or compression) of the steam is hyperbolic All of these There is no pressure drop due to condensation Steam is admitted at boiler pressure and exhausted at condenser pressure The expansion (or compression) of the steam is hyperbolic All of these There is no pressure drop due to condensation ANSWER DOWNLOAD EXAMIANS APP
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