Steam enters a turbine superheated at 6 MPa and 680 K and exits the turbine at 0.1 MPa with a quality of 0.89. The steam flow rate is 12 kg/s. Determine the power delivered by the turbine.

Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.