Consider a 150 kW, 30 m diameter horizontal axis, fixed speed wind turbine operating in a wind speed of 9 m/s. Two blades mounted on a cast iron hub drive a generator through a gearbox with a shaft speed ratio of 1: 50. If the speed of the shaft rotates at a rate of 45 rpm, calculate the power coefficient, the rotor tip speed and the torque on the generator shaft after c

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.

Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives