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 Equal to Three times Twice Four times Equal to Three times Twice ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The action of steam in a steam turbine is Dynamic Neither static nor dynamic Static and dynamic Static Dynamic Neither static nor dynamic Static and dynamic Static ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes over the blades. 20 to 30% 10 to 15% 15 to 20% 30 to 40% 20 to 30% 10 to 15% 15 to 20% 30 to 40% ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K) T1 /176.5H T1 /88.25H 176.5H/T1 88.25H/T1 T1 /176.5H T1 /88.25H 176.5H/T1 88.25H/T1 ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is _________ the relative velocity of steam at inlet tip of the blade. Equal to Greater than Less than None of these Equal to Greater than Less than None of these ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of the plant __________ with the mechanical draught. Increases Remains constant None of these Decreases Increases Remains constant None of these Decreases ANSWER DOWNLOAD EXAMIANS APP
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