Reconsider Problem 10.39, but include in the analysis that the compressor and turbine have isentropic efficiencies of 75% and 89%, respectively. Answer the same questions as in Problem 10.39 and determine the rate of entropy production within the com- pressor and turbine, each in Btu/min ⋅ °R.

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

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.

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?