Short answer question (4 points for each question). In multiple choice questions, you may choose multiple answers. 1. To save energy cost, City X would like to decrease the amount of energy losses in the main supply pipeline. Give two suggestions of how to reduce friction losses that occur in a pipeline: i) ___________________________________________________________ ii) ___________________________________________________________ 2. If the Reynolds number is greater than 4000 the flow is a) laminar flow b) turbulent flow (smooth pipe) c) turbulent flow (transition zone) d) turbulent flow (complete turbulence, rough pipes) e ) not enough information