The steam expands isentropically in a simple impulse turbine from 12 bar, 250°C with an enthalpy of 2935 k.J/kg to an enthalpy of 2584 kJ/kg at 0.1 bar. The nozzle makes 20° with blade motion and the...

The steam expands isentropically in a simple impulse turbine from 12 bar, 250°C with an enthalpy of 2035 k.J/kg to an enthalpy of 2584 ki/kg 2t 0.1 bar. The nozzle makes 20° with blade motion and the blades are symmetrical. Calculate the blade velocity that produces maximum efficiency for turbine speed of 3600 rom. Assume that the steam enters the nozzle with negiigible velocty.


Extracted text: The steam expands isentropically in a simple impulse turbine from 12 bar, 250°C with an enthalpy of 2935 k.J/kg to an enthalpy of 2584 kJ/kg at 0.1 bar. The nozzle makes 20° with blade motion and the blades are symmetrical. Calculate the blade velocity that produces maximum efficiency for a turbine speed of 3600 rpm. Assume that the steam enters the nozzle with negligible velocity.