Three states in a thermodynamic process are defined by p1 = 1 bar and v1 = 2 l, p2 = 20 bar and v2 = 0.2 l, and p3 = 4 bar and v3 = 1 l. the quantity β is defined for the path of integration 1-2-3 by: = − ∫ p 2 1 − ∫ p 3 2 determine β (expressed in units of joules) connecting states 1 and 2 with a linear p-v process and connecting states 2 and 3 with a polytropic process. remember that a polytropic process is one that can be described by the following relationship:= �

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

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

Wiy doeres rere okhn a pump whon working betwon the same pressure range?