14.

B4C122 Pages: 2

expansion (ie, after the constant pressure heat addition) is 5. Calculate the heat supplied

and Efficiency. Also find Mean Effective Pressure by considering air as ideal gas.

The velocity of steam entering simple impulse turbine is 1000 m/s, and the nozzle angle

is 20. The mean velocity of blades is 400 m/s and the blades are symmetrical. If the

steam is to enter the blades without shock, what will be the blade angles?

Neglecting friction effects on the blades calculate the tangential force on the blades and
the diagram power for amass flow of 0.75kg/s, estimate the axial thrust and diagram
efficiency. If the relative velocity at exit is reduced by friction to 80% of that at inlet

estimate the axial thrust, diagram power and diagram efficiency.