Steam Boilers, Engines, Nozzles and Turbines A condenser where circulating water flows through tubes which are surrounded by steam, in known as Surface condenser Evaporative condenser Jet condenser Barometric condenser Surface condenser Evaporative condenser Jet condenser Barometric condenser ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Efficiency of Rankine cycle can be increased by Decreasing initial steam pressure and temperature Decreasing exhausts pressure Increasing the expansion ratio Increasing exhaust pressure Decreasing initial steam pressure and temperature Decreasing exhausts pressure Increasing the expansion ratio Increasing exhaust pressure ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value (1 + moisture content) 1 – moisture content (1- moisture content) 1 + moisture content (1 + moisture content) 1 – moisture content (1- moisture content) 1 + moisture content ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is _________ the piston speed of single acting steam engine. Four times Three times Equal to Twice Four times Three times Equal to Twice ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be 900 m/s 79 m/s 188 m/s 450 m/s 900 m/s 79 m/s 188 m/s 450 m/s ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Gusset stays in a boiler are provided to Prevent leakage of hot flue gases Prevent the bulging of flat surfaces Support furnace freely from top Avoid explosion in furnace Prevent leakage of hot flue gases Prevent the bulging of flat surfaces Support furnace freely from top Avoid explosion in furnace ANSWER DOWNLOAD EXAMIANS APP
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