Apower cycle operating at steady state receives energy by heat transfer at a rate at 1800 k and rejects energy by heat transfer to a cold reservoir at a rate at 600 k. for each of the following cases, determine whether the cycle operates reversibly, operates irreversibly, or is impossible. a. q._h = 500 kw, q._c = 100 kw b. q._h = 500 kw, w._cycle = 250 kw, q._c = 200 kwc. w_cycle = 350 kw, q._c = 150 kw d. q._h = 500 kw, q._c = 200 kw.

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

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.