Question 204Motor Plants - Assistant Engineer

The correct answer is C) ferrous materials. A magnetic strainer is primarily used in diesel engine reduction gear oil systems to remove small particles of ferrous (iron-based) materials. This is because the magnetic properties of the strainer allow it to effectively capture and filter out any ferrous particles that may be present in the oil, helping to prevent damage to the sensitive reduction gear components. The other answer choices are incorrect because: A) Copper is a non-ferrous material, and would not be the primary target for a magnetic strainer. B) Babbitt is a soft, non-ferrous alloy used in bearings, and is also not the main focus of a magnetic strainer. D) Acidic materials are not the primary target for a magnetic strainer, which is focused on removing physical particles rather than chemical contaminants.