An impulse stage of a steam turbine is supplied with dry and saturated steam at 15 kgf / cm2. The stage has a single row of moving blades running at 3600 rpm. The mean diameter of the blade disc is 0.9 m. The nozzle angle is 15° and the axial component of the absolute velocity leaving the nozzles is 93.42 m /sec. The height of nozzles at their exit is 100 mm. The nozzle efficiency is 0.9 and the blade velocity coefficient is 0.966. The exit angle of the moving-blade is 2° greater than that at the inlet. Determine
(i) the blade inlet and outlet angles,
(ii) the isentropic heat drop in the stage,
(iii) the stage efficiency and
(iv) the power developed by the stage.