Design a slider-crank mechanism with a time ratio of q = 1.4, stroke of δ = 3 inches and time per cycle of t = 0.5sec. (a) use the analytical method to determine the appropriate link lengths l2, l3, offset distance l1(if any), and the crank speed in rpm. (b) use a compass and sketch your design in the fully retracted and fully extended positions. (c) identify the imbalance angle on your drawing.

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?