Aprocess fluid having a specific heat of 3500 j/kg · k and flowing at 2 kg/s is to be cooled from 80°c to 50°c with chilled water, which is supplied at a temperature of 15°c and a flow rate of 2.5 kg/s. assuming an overall heat transfer coefficient of 2000 w/m2 · k, calculate the required heat transfer areas using the ntu method for the following exchanger configurations: (a) parallel flow, (b) counterflow, and (c) shell-and-tube, one shell pass and two tube passes.

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

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

Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives