Magnets have been used for a long time as a way to check steel components on production lines using a specific measure. Below is a trivia quiz on magnetic particle testing designed to help you see how well you understand the method as a whole. How about you check it out and get to refresh your understanding. All the best!
Isolated mono-poles
Elongated bi-poles
Manifestations of the "string-theory"
Imaginary concepts for mapping magnetic fields
Magnetic zone
Confederation
Domain
Magnetic junta
Be surface breaking
Be no deeper than 1mm below the surface
Produce a leakage field at the test surface
All of the above
Magnetic particle flaw detection
Multi frequency eddy current
Para-magnetism
De-magnetization
Salient pole.
Saturation point.
Residual point.
Remnant point.
Reactance
Reluctance
Resistance
Antimagnetics
Grain size
Microstructure
Chemical composition
All of the above
Saturation field
Demagnetization value
Coercive force
Phase reversal factor
Subsurface inclusions
Subsurface porosity and voids
Cracks open to the surface
All of the above
The coil size
The current in the coil
The number of turns in the coil
All of the above
Direct current
Full wave current
Half wave current
Alternating current
180° to the magnetic field.
45° to the magnetic field.
90° to the magnetic field.
90° to the current flow.
Low coercive force
Low magnetic retentivity
High magnetic permeability
All of the above
Residual force
Coercive force
Demagnetizing field strength
Null force
Inherent defects
Service defects
Processing defects
All of the above
Permeability
Diameter
Length
Any of the above
Indicates flaw depth
Is always wider than the actual flaw opening
Is equal to the height of particle indication
Is determined by the angle of repose
Only inside diameter surface flaws can be found
Only outside diameter surface flaws can be found
Both inside and outside surface and subsurface flaws can be found if the wall thickness is not too great
None of the above, central conductors cannot be used for ring shaped objects
100 amps
2000 amps
4000 amps
6000 amps
Using an A.C. yoke
Increasing leg spacing
Reducing magnetizing current
Using a pie gage
Reversing D.C. with a central conductor
Pulsating A.C. with a central conductor
A portable yoke
Passing the tube through an A.C. coil
Take breaks at regular intervals
Wear yellow-green tinted glasses (of the appropriate filtering ability)
Both a and b
Increase dark adaption time
Magnetize in another direction
Demagnetize then remagnetize in the desired direction
Use lower amperage
Use more amperage
A false indication
A non-relevant indication
A sub surface indication
A lack of indication
Randomly oriented
Aligned north to south
Aligned east to west
Aligned 90 degrees to the current flow