10 Question MT quiz

1. What is the minimum temperature a steel containing 0.8%C has to be heated to before quench cracking can occur?

2. The accumulation of particles at a site on the parts surface, collected at and held to the site by the magnetic leakage field, is called:

3. The general term used to refer to a break in the metallic continuity of the part being tested is:

4. If a current of the same amperage is passed through two conductors of the same dimensions, one of which is magnetic and one of which is non-magnetic, the magnetic field surrounding the conductors will:

5. The parts are blanks cut from rolled iron bar stock. They have been rough machined. Inspection by the continuous method, using a circular short, reveals well-defined but broken lines running parallel with the axis on some of the pieces and non indication on others. The broken lines range in length from 6mm to 25mm. These indications are indicative of:

6. When testing for fine surface cracks, the preferred MT method should be:

7. Indications at the root of a notch caused by flux leakage resulting from the notch configuration are called:

8. If wet magnetic particle suspension is not uniform, then:

9. The most common failure mechanism associated with sharp fillets, notches, undercuts and seams is:

10. Where particles are attracted to a site on the surface of a party by a magnetic leakage field which is due to a condition such as a crack, lap, or other condition not acceptable to the applicable standards for the part, then we have:

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