A steam turbine receives steam at a pressure of 1 MPa and a temperature of 300 degC. The steam leaves the turbine at a pressure of 15 kPa. The work output of the turbine is measured to be 600 kJ per kg of steam flowing through the turbine. a) Determine the isentropic efficiency of the turbine, and list any necessary assumptions.

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k

Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.

Brief discuss how the presence of dislocations in crystal structures can be an advantage and a disadvantage to engineer and designers.