(a)describe the two methods of governing of steam turbines briefly. (b) write a short note on a wind mill. (c)-steam enters a simple impulse turbine at 1000 m/s and the nozzle angle is 20°. the mean speripheral velocity of blade is 400 m/s blade are symmetrical. neglecting frictional effects and on blade calculate the tangential & axial thrust, diagram power and efficiency

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