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NDT Exam-Questions with Correct Answers/ Verified/ Latest 2024/2025
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NDT Exam-Questions with Correct Answers/ Verified/ Latest 2024/2025
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NDT Exam-Questions with Correct Answers/ Verified/ Latest2024/2025
low viscosity liquid with low surface tension - ✔✔Capillary action
When current passes through the part;The orientation of the magnetic flux is circular -
✔✔Circular
Using a coil;Flux lines rotate around the longitudinal axis - ✔✔Longitudinal
part subjected to magnetizing force when testing medium is applied - ✔✔continuous
magnetizing force is removed before testing medium is applied - ✔✔residual
deep penetration - ✔✔direct current
shallow penetration - ✔✔alternating current
Uniform width, even ripples that taper smoothly into the metal.
No burn marks, no oxide more than 1/2 inch from the weld.
Must be free of gas pockets, porosity and inclusions
Penetration must be 100% on butt weld - ✔✔good weld
Three types of developers used with liquid penetrant inspection - ✔✔wet, non aqueous, dry
Ac magnetization is best suited for locating _____ faults - ✔✔surface
The magnetism that remains in a material after the magnetizing force is removed is called -
✔✔retentivity
, A _______ uses CRT for imaging and the image can be recorded for reference -
✔✔videoscope
A fault located with the fluorescent penetrant method will show up as a ______ line -
✔✔green
The time the penetrant remains on the surface of the part is known as _____ time -
✔✔dwell
two methods of magnetization for mag particle inspection are ___ and ___ methods -
✔✔longitudinal and circular
Two important characteristics of the testing medium used for magnetic particle inspection
are - ✔✔high permeability and low retentivity
The magnetic strength of a piece of material is ____ at its surface - ✔✔strongest
There are three types of penetrants used for liquid penetrant inspections - ✔✔water-
soluble, post-emulsifying, and solvent-removable
Penetrant inspection is based on the principle of - ✔✔capillary action
parts which are to be inspected using liquid penetrants ____ be cleaned with an abrasive
blast - ✔✔should not
A ____ is an optional device that allows us to see inside an engine without disassembling it -
✔✔borescope
When magnetizing a part for magnetic particle inspection, it must be magnetized in such a
way that the lines of flux are - ✔✔perpendicular
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