Prepare for the Engineman EN A School Test 1. Utilize flashcards and multiple choice questions with detailed explanations to boost confidence and readiness for the test.

Multiple Choice

What is sometimes used in strainers to remove particles and metals that might damage bearings?

Magnetic filtration uses magnetic attraction to pull ferrous metal particles out of the flowing fluid. Bearings are especially vulnerable to tiny iron or steel fragments, which can cause scoring, wear, or failure. Placing a magnet in the strainer captures these metal filings before they circulate to the bearings, helping to protect them and extend life. Other options rely on size or chemistry rather than magnetism: a screen or filtration cartridge traps particles by pore size but can miss very small or loosely retained metal fragments, and a charcoal filter targets organic contaminants rather than metallic particles.

Magnetic filtration uses magnetic attraction to pull ferrous metal particles out of the flowing fluid. Bearings are especially vulnerable to tiny iron or steel fragments, which can cause scoring, wear, or failure. Placing a magnet in the strainer captures these metal filings before they circulate to the bearings, helping to protect them and extend life.

Other options rely on size or chemistry rather than magnetism: a screen or filtration cartridge traps particles by pore size but can miss very small or loosely retained metal fragments, and a charcoal filter targets organic contaminants rather than metallic particles.