(a) Water is flowing through a channel having a length of 5cm and breadth of 4cm. Density of water can be taken as 1000kg/m3 and viscosity of water is 103Pas. Velocity with which water is flowing is 2.5m/s. Calculate the following (a) Hydraulic diameter (b) Reynolds number (c) Predict if flow is laminar or turbulent along with reason for your conclusion. [2+2+2=6] (b) For fluid flowing in a pipe with diameter of 5cms and having Reynolds number 2300 , calculate the hydrodynamic entry length. [2]