A simple impulse turbine expands steam frictionlessly from $$12$$ bar, $${250^0}C$$ with an enthalpy of $$2935$$ $$kJ/kg$$ to an enthalpy of $$2584$$ $$kJ/kg$$ at $$0.1$$ bar. Assuming that the nozzle makes an angle of $${20^0}$$ with the blade motion, and that the blades are symmetrical, find the blade velocity that produces maximum efficiency for a turbine speed of $$3600$$ rev/min. assume that the steam enters the nozzle with negligible velocity.

GATE 2000 Mechanical Engineering PYQ — Thermodynamics

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Thermodynamics · Power Cycles

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Drill mode: steam turbine · 10/19

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Recurring concept

Power Cycles has appeared in GATE Mechanical Engineering 52 times across 28 years (2016, 2017, 2022, 2024, 2025, ...).