Question 3 a. For the pressure vessel containing glycerin, with piezometer attached as shown, what is the pressure at point A? s.g=1.26 Open to atmosphere 40.8 cm Glycerin - b. Elaborating on the minor energy losses in pipes c. What are the factors influencing the frictional loss in pipe flow? d. Discuss dimensional homogeneity.

Q1) By using dimensional analysis concept, express the wall shear stress for the pipe flow which is depending likely on the distance from the beginning of the pipe, pipe diameter, pipe wall roughness, fluid velocity, density and viscosity?

Problem 2 The apparatus sketched in the figure below serves as a viscometer i.e. it can be used to measure the viscosity of a liquid. In the drawing, D is a large reservoir containing a viscous liquid A and E is a cylindrical tube of radius R, open at both ends, surrounding and coaxial with B, which is a cylindrical "bob" of radius êR that is dragged up through the fluid by a frictionless pulley system (C) utilizing a weight W. Determine a design equation that relates the viscosity of the liquid to the geometry of the system and the weight W. Hint: you can assume that the length of the cylindrical tube is sufficiently long for the flow to reach steady state. W E D B

Describe the methodology for obtaining the pump curve in a project, where data are collected at five points with different pressures in the pump (10 psi, 15 psi, 20 psi, 25 psi and 30 psi), where to find these flow rates Q a 1000 ml bottle is used and the time required to fill it is timed,  for each of the pump's five pressure points. The gauge pressure H in meters of water column reached must also be observed in order to construct the HxQ graph of the pump. This entire process is carried out for three different types of piping systems, each with its characteristic pressure drops.