4. A batch settling test on a Type II suspension has yielded the data below for removal of particulate mass as a function of time and depth. Determine the expected removal in a continuous flow sedimentation tank that has ideal horizontal plug flow, if the depth of the settling zone is 1.8 m and the detention time is 45 min. Time (min) 0 10 20 30 45 60 90 Depth (m) 1.8 0.6 1.2 2.4 percentage removal of particles based on mass 0 0 18 12 24 19 34 28 51 41 58 52 82 69 0 21 31 50 60 78 85 0 13 22 30 44 54 78

In the McCabe–Thiele method, between which two lines is the staircase constructed?

Under what conditions is a cascade of mixer-settler units probably the best choice of extraction equipment?

6. Two previously undeformed cylindrical specimens of an alloy are to be strain hardened by reducing their cross-sectional areas (while maintaining their circular cross sections). For one specimen, the initial and deformed radii are 15 and 12 mm, respectively. The second specimen, with an initial radius of 11 mm, must have the same deformed hardness as the first specimen; compute the second specimen's radius after deformation.

What are centrifugal pumps?

For what types of wet solids can fluidized-bed, spoutedbed, and pneumatic-conveyor dryers be used?

3. Sketch and compare Edge and screw dislocations and give main the differences between them.

Calculate the mass in kg of an object that weighs 25 Newton.

Describe about the Electro-osmosis.

Briefly describe the following: (i) Saddle Support (ii) Skirt Support.  In detail.