How does friction loss affect the use of a suction pump?

Friction loss in a system refers to the energy lost due to the resistance of the liquid moving through pipes, fittings, and other components. When using a suction pump, friction loss can significantly impact its performance, particularly by increasing the amount of suction pressure required to lift the liquid from the source.

In the context of the question, friction loss does not improve pump efficiency, nor does it directly lead to overheating, which makes those options less relevant. The assertion that friction loss reduces the amount of work done by atmospheric pressure is also inaccurate since friction loss effectively demands more work from the pump to overcome the resistance created by the piping system.

Thus, the relationship between friction loss and the suction pump is that increased friction loss necessitates a higher suction pressure to compensate for energy lost overcoming that resistance, highlighting that the pump must work harder to perform its function effectively. This illustrates why understanding friction loss is crucial in the design and selection of suction pumps in plumbing applications.