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. Twice Four times Three times Equal to Twice Four times Three times Equal to ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines An air preheater is installed Before the superheater None of these Between the economiser and chimney Before the economiser Before the superheater None of these Between the economiser and chimney Before the economiser ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The critical pressure gives the velocity of steam at the throat Less than the velocity of sound More than the velocity of sound Equal to the velocity of sound None of these Less than the velocity of sound More than the velocity of sound Equal to the velocity of sound None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a velocity compounded impulse turbine, when steam flows through the second row of moving blades, Velocity remains constant Pressure remains constant Velocity decreases Velocity increases Velocity remains constant Pressure remains constant Velocity decreases Velocity increases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The diameter of fire tubes in Cochran boiler is of the order of 8 cm 6 cm 2 cm 12 cm 8 cm 6 cm 2 cm 12 cm ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In reaction turbines, the axial thrust is due to Pressure drop across the rotor None of these Both (A) and (B) Change in axial velocity Pressure drop across the rotor None of these Both (A) and (B) Change in axial velocity ANSWER DOWNLOAD EXAMIANS APP
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