Steam Boilers, Engines, Nozzles and Turbines Adiabatic process is Reversible process Essentially an isentropic process Constant temperature process Non-heat transfer process Reversible process Essentially an isentropic process Constant temperature process Non-heat transfer process ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The ratio of the clearance volume to the swept volume is called None of these Cut-off ratio Clearance ratio Expansion ratio None of these Cut-off ratio Clearance ratio Expansion ratio ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which of the following statement is correct for a compound steam engine? The ratio of expansion is reduced, thus reducing the length of stroke The forces in the working parts are increased as the forces are distributed over more parts The cost of the engine, for the same power and economy, is more than that of a simple steam engine The temperature range per cylinder is increased, with corresponding increase in condensation The ratio of expansion is reduced, thus reducing the length of stroke The forces in the working parts are increased as the forces are distributed over more parts The cost of the engine, for the same power and economy, is more than that of a simple steam engine The temperature range per cylinder is increased, with corresponding increase in condensation ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity ‘V’ at inlet) Vb = V cos α Vb = V² cos α Vb = 0.5 V² cosα Vb = 0.5 V cosα Vb = V cos α Vb = V² cos α Vb = 0.5 V² cosα Vb = 0.5 V cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Boiler parameters are expressed by Pressure of steam in kg/cm² All of these Tonnes/hr. of steam Temperature of steam in °C Pressure of steam in kg/cm² All of these Tonnes/hr. of steam Temperature of steam in °C ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A supercritical boiler is one that operates above the pressure and temperature of following values 100 kg/cm² and 540°C 1 kg/cm² and 100°C 218 kg/cm² abs and 540°C 218 kg/cm² abs and 373°C 100 kg/cm² and 540°C 1 kg/cm² and 100°C 218 kg/cm² abs and 540°C 218 kg/cm² abs and 373°C ANSWER DOWNLOAD EXAMIANS APP
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