An inward flow reaction turbine has external and internal diameters of 0.9 m and 0.45mrespectively. The turbine is running at 200r.p.m. and the width of the turbine at the inlet is 0.2 m. The velocity of flow through the runner is constant and is equal to 1.8 m/s. The guide blades make an angle of 10° to the tangent of the wheel and discharge at the outlet of the turbine is radial.
Draw the inlet and outlet velocity triangles and determine: 

(i) Relative velocity at the inlet,

 (ii) The runner blade angles,

(iii) Width of the runner outlet, 

(iv) Head at the inlet of the turbine, 

(v)Power developed; and 

(vi) Hydraulic efficiency of the turbine