Mach number is important in a fluid flow problem, when the inertia and _____________ forces predominate?

A. 2000
B. 10
C. 100
D. 1000

A. Less than the average velocity through channels
B. More than the average velocity through channels
C. Dependent on the pressure drop across the bed
D. Same as the average velocity through channels

A. 0.5
B. 0.84
C. 1.84
D. 1.25

A. Monotonically decreases
B. Decreases and then increases
C. Remains constant
D. Increases and then decreases

A. Reduce the cost of compressor
B. Reduce the size requirement
C. Resemble closely to isothermal compression
D. Are easy to control

A. Viscosity
B. Density
C. Velocity gradient
D. None of these