The ratio of pressure forces to inertial forces is called the _______________ number?

A. Fluid-particle interaction
B. Fluid flow through helical pipes
C. Power consumption in agitated vessels
D. Psychrometry

A. Vavg
B. 1.2 Vavg
C. 1.5 Vavg
D. 1.8 Vavg

A. Decreasing the size of the inlet pipe
B. Increasing the size of the inlet pipe
C. Lowering the pump position
D. Both B. and C.

A. At the centre
B. At d/4 from the wall
C. At the wall
D. At d/8 from the wall

A. 4πg/3
B. 0.01 πgH/4
C. 0.01 πgH/8
D. 0.04 πgH/3

A. Q1/Q2
B. Q2/Q1
C. (Q2 – Q1)/Q1
D. (Q2 – Q1)/Q2