A.The velocity of jet of steam entering a de-Laval turbine is 500 mis. The nozzles are inclined at 20° to the direction of blades. The blade speed is 200 mis and the exit angle of the moving blades is 25°. For mass flow rate of 5 kg/s, determine (a) exit velocity of steam (b) diagram efficiency ( c) power developed. B. Show that in an impulse turbine having a fixed nozzle angle a, equiangular blades with blade velocity coefficient 'k', the maximum blade efficiency is given by,
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