2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!
NDT Questions and Answers 2024/2025
Boroscope
An optical device similar in principle to a telescope in that it enlarges objects like a
magnifying glass.
Fiberoptic Scope
An optical device that has a flexible, articulated probe that can bend around corners.
Allows you to see inside objects that previously would have needed dis-assembly.
Video Scope
The image is recorded by a tiny light-sensitive CCD chip.
Weld
A good ____ is uniform in width, with even ripples that taper off smoothly into the
base metal.
Liquid Penetrant Inspection
A method of non-destructive inspection used for locating cracks, porosity, or other
types of faults open to the surface.
Green
Using liquid penetrant inspection an ultraviolet light is used with the fluorescent
penetrant and any flaw shows up as this color.
Red
Using liquid penetrant inspection, the colored dye method the faults show up as this
color.
1|Page| GradeA+ | 2 0 0 2 5
, 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!
Capillary Attraction
An action causing a liquid to be drawn up into extremely tiny tubes or between close-
fitting parts.
Defect must be open to the surface
The primary limitation of dye penetrant inspection in that...
Dwell Time
The amount of time required for a penetrant to cure is called it's ____ ____ and is
determined by the size and shape of the discontinuities being looked for.
Water, Emulsifying Agent, or a solvent
Liquid penetrant is removed using either...sprayed at a 45 degree angle.
Dry Developer
This developer contains loose powder material such as talcum, typically placed in a
bin of loose developer.
Wet Developer
This developer typically consists of a white powder mixed with water that is either
flowed over a surface, or a part is immersed in it.
Non Aqueous Developer
This developer consists of a white chaulk-like powder suspended in a solvent that is
normally applied from a pressure spray can, or sprayed onto a surface with a paint
gun.
Magnetic particle inspection
1|Page| GradeA+ | 2 0 0 2 5
NDT Questions and Answers 2024/2025
Boroscope
An optical device similar in principle to a telescope in that it enlarges objects like a
magnifying glass.
Fiberoptic Scope
An optical device that has a flexible, articulated probe that can bend around corners.
Allows you to see inside objects that previously would have needed dis-assembly.
Video Scope
The image is recorded by a tiny light-sensitive CCD chip.
Weld
A good ____ is uniform in width, with even ripples that taper off smoothly into the
base metal.
Liquid Penetrant Inspection
A method of non-destructive inspection used for locating cracks, porosity, or other
types of faults open to the surface.
Green
Using liquid penetrant inspection an ultraviolet light is used with the fluorescent
penetrant and any flaw shows up as this color.
Red
Using liquid penetrant inspection, the colored dye method the faults show up as this
color.
1|Page| GradeA+ | 2 0 0 2 5
, 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!
Capillary Attraction
An action causing a liquid to be drawn up into extremely tiny tubes or between close-
fitting parts.
Defect must be open to the surface
The primary limitation of dye penetrant inspection in that...
Dwell Time
The amount of time required for a penetrant to cure is called it's ____ ____ and is
determined by the size and shape of the discontinuities being looked for.
Water, Emulsifying Agent, or a solvent
Liquid penetrant is removed using either...sprayed at a 45 degree angle.
Dry Developer
This developer contains loose powder material such as talcum, typically placed in a
bin of loose developer.
Wet Developer
This developer typically consists of a white powder mixed with water that is either
flowed over a surface, or a part is immersed in it.
Non Aqueous Developer
This developer consists of a white chaulk-like powder suspended in a solvent that is
normally applied from a pressure spray can, or sprayed onto a surface with a paint
gun.
Magnetic particle inspection
1|Page| GradeA+ | 2 0 0 2 5
