## 26. Value of Peclet number = ∞, is the representative of

## 27. For identical operating conditions, the pressure drop over __________ tray is the highest out of the following.

## 28. The normal range of velocity of steam in pipes is __________ m/sec.

## 29. For turbulent flow (NRe > 2100) of low viscosity fluid (μ > 20cp) in steel pipes, the optimum inside pipe diameter is given by (where, Q = fluid flow rate, ft^{3}/sec.ρ = fluid density, lb/ft^{3}.μ = fluid viscosity, centipoise D_{i} = optimum inside pipe diameter, inches)

^{3}/sec.ρ = fluid density, lb/ft

^{3}.μ = fluid viscosity, centipoise D

_{i}= optimum inside pipe diameter, inches)

## 30. Rate of filtrate delivery is inversely proportional to the

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