A part is adaptable to magnetic particle testing if:

it is attached to an electrostatic field

the material is an electric conductor

The permeability of a material describes:

the ease with which it can be magnetized

the depth of the magnetic field in the part

the length of time required to demagnetized it

the ability to retain the magnetic field

Based on the domain theory, an unmagnetized part has domains that are:

aligned 90 degrees to the current flow

What equipment is used to determine if a part has been demagnetized?

two paper clips held close to the part

When the central conductor MPI method is used to inspect a ring shaped object, or short cylinder:

both inside and outside surface and subsurface flaws can be found if the wall thickness is not too great

only inside diameter surface flaws can be found

only outside diameter surface flaws can be found

none of the above, central conductors cannot be used for ring shaped objects

Which type of magnetic field produces a readily detectable north and south pole in a part?

circular when a central conductor is used

circular when a headshot is used

A subsurface discontinuity can be detected by magnetic particle testing. What factor limits the ability to detect subsurface discontinuities?

the type of material being tested

the geometry of the part being tested

the type of current and particle medium used

The flux density of the magnetism induced by a coil can be controlled by varying:

the number of turns in the coil

What will be the result if a bath concentration is too high?

discontinuities may be missed due to the masking of indications

the testing amperage will have to be reduced to prevent masking of indications

the testing amperage will have to be increased to ensure adequate flux leakage to attract the additional particles

the part will have to drain longer to reveal all indications

A void in an otherwise homogenous magnetized material presents itself as a point magnetic dipole. This is the basis for:

magnetic particle flaw detection

A Trivia Quiz On Magnetic Particle Testing!

Materials Science

Mechanical Engineering

Industrial Engineering

ASTM E1444

ISO 9934

Reviewed by Matt Balanda

Matt Balanda, BS (Aerospace Engineering) |

Science Teacher

Review Board Member

Matt Balanda, a Calvary Chapel Christian School leader with a Bachelor's in Aerospace Engineering and Mathematics, transitioned from Aerospace Engineering to Education with a Master's from California Baptist University. As the High School Vice-Principal and Physics teacher, he nurtures students' love of learning and faith, creating an enriching and transformational educational experience.

, BS (Aerospace Engineering)

By Cherie

Cherie

Community Contributor

Quizzes Created: 4 | Total Attempts: 24,082

| Attempts: 7,675 | Questions: 62 | Updated: Oct 4, 2025