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 = 0.5 V² cosα Vb = 0.5 V cosα Vb = V² cos α Vb = V cos α Vb = 0.5 V² cosα Vb = 0.5 V cosα Vb = V² cos α ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In locomotives, the draught is produced by Steam jet draught Both combined (A) and (B) Chimney Induced draft fan Steam jet draught Both combined (A) and (B) Chimney Induced draft fan ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A safety valve usually employed with stationary boilers is Dead weight safety valve Lever safety valve High steam and low water safety valve All of the listed here Dead weight safety valve Lever safety valve High steam and low water safety valve All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In a single acting steam engine The steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft The steam is admitted, in turn, on both sides of the piston and two working strokes are produced during each revolution of the crankshaft The steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft The steam is admitted, in turn, on both sides of the piston and one working stroke is produced during each revolution of the crankshaft The steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft The steam is admitted, in turn, on both sides of the piston and two working strokes are produced during each revolution of the crankshaft The steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft The steam is admitted, in turn, on both sides of the piston and one working stroke is produced during each revolution of the crankshaft ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Size of boiler tubes is specified by Inside diameter and thickness Mean diameter and thickness Outside diameter and thickness Outside diameter and inside diameter Inside diameter and thickness Mean diameter and thickness Outside diameter and thickness Outside diameter and inside diameter ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The friction in the nozzle __________ exit velocity of steam. None of these Has no effect on Increases Decreases None of these Has no effect on Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
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