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NDT TEST QUESTIONS WITH ANSWERS
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NDT TEST QUESTIONS WITHANSWERS
ANSWER Capillary action for low viscosity liquids with low surface tension.
When current passes through the portion, the orientation of the magnetic flux is
circular. ANSWER Circular
Using a coil, flux lines spin along the longitudinal axis. ANSWER Longitudinal
When the testing medium is applied, the part is subjected to a magnetizing
force. The answer is continuous.
The magnetizing force is eliminated before applying the testing medium -
ANSWER residual.
deep penetration, ANSWER direct current
shallow penetration - alternating current
Ripples are uniform in width and taper smoothly into the metal.
No burn scars or oxide more than 1/2 inch from the weld.
Must be free of gas pockets, porosity, and
inclusions.
A good butt weld requires 100% penetration.
, Three types of developments employed with liquid penetrant inspection: wet,
non-aqueous, and dry.
Ac magnetism is best suited for finding _____ faults--ANSWER surface.
The magnetism that persists in a material after the magnetizing force is gone is
known as ANSWER retentivity.
A _______ employs CRT for imaging, and the image can be recorded for
reference. ANSWER videoscope
A fault located using the fluorescent penetrant approach will appear as a ______
line - ANSWER green.
The duration of the penetrant's stay on the part's surface is referred to as the
dwell time.
There are two ways of magnetization for mag particle inspection: longitudinal
and circular.
The testing medium utilized for magnetic particle inspection has two crucial
characteristics: high permeability and low retentivity.
The magnetic strength of a piece of material is ____ at its surface - the strongest
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