In pipe networks, fluid pressure is important because it:, Stops the fluid from moving, Drives the fluid flow, Removes all friction, Decreases pipe length, Which of the following can lead to head loss in a pipe network?, Bends, valves, and pipe diameter changes, Only sunlight, Only the color of the pipe, Only the age of the water, A pump operating curve shows the relationship between:, Stress and strain, Solar power and heat transfer, Gear ratio and torque, Flow rate and pressure change, If pipe length increases while other factors remain constant, the flow resistance generally:, Decreases, Increases, Becomes zero, Is not affected, If pipe diameter increases, the flow resistance generally:, Increases greatly, Does not change, Decreases, Becomes infinite, A pump gives useful work to the fluid at a rate of 40W. The energy input to the pump is 100W. What is the pump efficiency?, 20%, 40%, 60%, 100%, A pump moves water with a flow rate of 0.002m3/s and produces a pressure change of 5000 Pa. what is the pump work rate? and produces a pressure change of 5000, 2.5 W, 5 W, 10 W, 25 W

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