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!
Magnetic zone
Confederation
Domain
Magnetic junta
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Be surface breaking
Be no deeper than 1mm below the surface
Produce a leakage field at the test surface
All of the above
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Magnetic particle flaw detection
Multi frequency eddy current
Para-magnetism
De-magnetization
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Salient pole.
Saturation point.
Residual point.
Remnant point.
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Reactance
Reluctance
Resistance
Antimagnetics
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Grain size
Microstructure
Chemical composition
All of the above
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Saturation field
Demagnetization value
Coercive force
Phase reversal factor
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Subsurface inclusions
Subsurface porosity and voids
Cracks open to the surface
All of the above
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The coil size
The current in the coil
The number of turns in the coil
All of the above
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Direct current
Full wave current
Half wave current
Alternating current
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180° to the magnetic field.
45° to the magnetic field.
90° to the magnetic field.
90° to the current flow.
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Low coercive force
Low magnetic retentivity
High magnetic permeability
All of the above
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Residual force
Coercive force
Demagnetizing field strength
Null force
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Inherent defects
Service defects
Processing defects
All of the above
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Permeability
Diameter
Length
Any of the above
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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
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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
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100 amps
2000 amps
4000 amps
None of the above
Using an A.C. yoke
Increasing leg spacing
Reducing magnetizing current
Using a pie gage
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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
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Take breaks at regular intervals
Wear yellow-green tinted glasses (of the appropriate filtering ability)
Both a and b
Increase dark adaption time
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Magnetize in another direction
Demagnetize then remagnetize in the desired direction
Use lower amperage
Use more amperage
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A false indication
A non-relevant indication
A sub surface indication
A lack of indication
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Randomly oriented
Aligned north to south
Aligned east to west
Aligned 90 degrees to the current flow
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Salient points
Discontinuities
Magnetic poles
Nodes
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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
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Paramagnetic
Diamagnetic
Ferromagnetic
Nonmagnetic
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It is attached to an electrostatic field
The material is ferromagnetic
The material is nonferrous
The material is an electric conductor
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The Earth's field
Permanent magnets
Mechanically-induced magnetism
Electrically-induced magnetism
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Saturation lines
Magnetic field
Ferromagnetic rays
Coercive lines
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The north pole
The south pole
Both north and south poles
None of the above
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Magnetic force curve
Hysteresis curve
Saturation curve
Induction curve
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The length to diameter ratio
The strength of the applied magnetizing force
The right hand rule
The left hand rule
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Coercive force
Leakage field
Doppler effect
High reluctance at the crack
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Surface discontinuities
Subsurface discontinuities
Surface and subsurface discontinuities
None of the above
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By alternating applications of power
By transforming alternating current
By rectifying alternating current
None of the above
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As the length increases, the amperage must increase
As the length decreases, the amperage can be decreased
The length does not have any effect on the required amperage
The length is restricted to ensure a ratio between 2 and 15
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Headshot
Prods
Central conductor method
All of the above
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Passing current through the part
Placing the part in a coil
Passing current through a central conductor
Any of the above would provide satisfactory results
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Headshot
Coil
A yoke
Both b and c
All of the above
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The diameter and length of part
The placement of the part in the coil
The amount of fill factor between the part and coil
All of the above are factors
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Along the outside edge
Along the inside surface
In the center of the coil
All of the above because the distribution must be equal
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3000 A
5000 A
7500 A
15,000 A
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When there is a low fill factor
When there is a high fill factor
When the part is hollow
At all times when calculating length to diameter ratios
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Circular
Longitudinal
Circular when a central conductor is used
Circular when a headshot is used
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Strong indications
Weak indications
No indications
Fuzzy indications
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The particles must be very small
The particles provide a high contrast to the surface of the test
The particles must be able to absorb the vehicle to increase their mobility
All of the above
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Good mobility
High permeability
Low retentivity
All of the above factors to be an acceptable testing medium
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Quiz Review Timeline (Updated): Oct 4, 2024 +
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