Mechanical Operations

A. Jet mills
B. Fluid energy mill
C. Micronizer
D. All A., B. and C.

A. Blending miscible liquids
B. Non-flowing powder and thin pastes
C. Bath mixing
D. Continuous mixing

A. Nc = (1/4π). √(g/R1 – R2)
B. Nc = (1/2π). √(g/R1 – R2)
C. Nc = (1/π). √(g/R1 – R2)
D. Nc = (1/2π). √(R1 – R2/g)

A. 3 to 4
B. 8 to 10
C. 10 to 15
D. 15 to 20

A. Disc bowl centrifuge
B. Sharpies super-centrifuge
C. Batch basket centrifuge
D. Sparkler filter

A. 3
B. 30
C. 85
D. 25

A. Primary
B. Secondary
C. Fine
D. Ultrafine

A. Cutting action
B. Compression
C. Compression and tearing
D. Impact and attrition

A. tons/hr
B. tons/ft2
C. Both A. & B.
D. tons/hr-ft2

A. Surface energy created by crushing to the energy absorbed by the solid
B. Energy absorbed by the solid to that fed to the machine
C. Energy fed to the machine to the surface energy created by crushing
D. Energy absorbed by the solid to the surface energy created by crushing