A power cycle operates between two reservoirs having temperature 700 K and 300K, respectively. QH is the heat (thermal energy) received from the hot reservoir. QL is the heatrejected to the cool reservoir. Wmech represents the mechanical work produced. Please determineif the following cycles are possible and explain why?
(A). QH=700 kJ, Wmech=400 kJ, QL=300 kJ;(B). QH=700 kJ, Wmech=500 kJ, QL=200 kJ;(C). QH=700 kJ, Wmech=300 kJ, QL=600 kJ;(D). QH=700 kJ, Wmech=600 kJ, QL=100 kJ;

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.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.