Friction in a pipeline causes:

Friction in a pipeline causes:

• A. Cavitation
• B. Loss of pressure
• C. Increase in temperature
• D. Turbulence

Answer: (B)

As water moves through a pipe, friction with the pipe walls dissipates part of the fluid’s energy. That energy loss shows up as a lower pressure downstream, known as head loss. So friction in a pipeline mainly results in a loss of pressure along the line. Cavitation isn’t caused by friction alone; it happens when local pressure drops below the water’s vapor pressure, which is a different condition often associated with pumps or sudden changes in flow. Temperature rise from friction exists in theory, but in typical piping systems the amount of heat generated is small and not the primary concern. Turbulence describes the flow pattern, not the direct outcome of friction here, so it’s not the main effect being asked about.

As water moves through a pipe, friction with the pipe walls dissipates part of the fluid’s energy. That energy loss shows up as a lower pressure downstream, known as head loss. So friction in a pipeline mainly results in a loss of pressure along the line.

Cavitation isn’t caused by friction alone; it happens when local pressure drops below the water’s vapor pressure, which is a different condition often associated with pumps or sudden changes in flow. Temperature rise from friction exists in theory, but in typical piping systems the amount of heat generated is small and not the primary concern. Turbulence describes the flow pattern, not the direct outcome of friction here, so it’s not the main effect being asked about.