🔍 Key Concepts

• Differential pressure across a filter or strainer • How flow restriction affects inlet and outlet pressures • Typical signs of a clogged suction strainer in a pumping system

💭 Think About

• What happens to the pressure upstream and downstream of a strainer as it gradually blocks with debris? • Which choice describes a condition directly related to the strainer itself, rather than a secondary effect in other equipment? • Think about how engineers monitor filters/strainers in service: what gauge reading are they usually watching for to decide when to clean it?

✅ Before You Answer

• Compare what increased differential pressure vs decreased differential pressure physically mean in a piping system • Confirm which options talk about pressure across the strainer and which talk about unrelated machinery behavior • Ask yourself: which indication would be the most direct and reliable sign the strainer, specifically, is getting dirty?