ASNT LEVEL III BASIC SECTION II- OVERVIEW OF
NDT METHODS REAL EXAM WITH QUESTIONS AND
CORRECT ANSWERS | ALREADY GRADED A+ |
GUARANTEED PASS | ASNT LEVEL III BASIC
SECTION 11 LATEST VERSION 2025 \[BRAND NEW!!]
The method used to generate eddy current in a test specimen using a coil can most
closely be compared with the action of a: - ANSWER- Transformer
Electromagnetic testing relies on the principle of: - ANSWER- electromagnetic
induction
When the electrical current in an eddy current coil reverses direction, the: -
ANSWER- direction of the eddy current in the test part also reverses.
In order to generate measurable eddy current in a test specimen, the specimen must
be: - ANSWER- an electrical conductor.
The magnetic field generated by the eddy current induced in a test specimen: -
ANSWER- opposes the magnetic field that induced the eddy current.
In electromagnetic testing, IACS is a recognized abbreviation for: - ANSWER-
International Annealed Copper Standard
- / 3
In electromagnetic testing, the specimen is coupled to the test coil by: - ANSWER- the coils electromagnetic fields.
The tendency of liquid penetrant to enter a discontinuity is primarily related to: - ANSWER- Capillary forces.
Liquid penetrant testing is a non-destructive method that can be used for: -
ANSWER- Locating discontinuities open to the surface.
Which of the following is not a characteristic that applies to liquid penetrant testing? - ANSWER- This method can accurately measure the depth of a crack or discontinuity.
The property of a dye used in penetrant materials to emit light in the range of wavelength different from the wavelength of light that excites the emission if
called: - ANSWER- Fluorescence
When using a fluorescence, post-emulsifier penetrant, the length of time the emulsifier is allowed to remain on the part is critical for detecting shallow
discontinuities. The optimum length of time should be: - ANSWER- determined by
experimentation.
A red penetrant indication against the white background is most likely to be seen
when: - ANSWER- visible dye penetrant are used.
The most widely accepted method for removing excessive water washable
penetrant from the surface of a test specimen is by: - ANSWER- using a water
spray rinse.
- / 3
Which of the following penetrant systems is generally considered the least sensitive? - ANSWER- Water-washable; visible dye.
When performing a liquid penetrant test using a solvent-removable visible dye penetrant, there are several ways to remove excess penetrant from the surface of the part. Which of the methods listed below is generally regarded as most suitable for giving accurate test results? - ANSWER- Wiping with dry wipes, then wiping with a solvent-dampened cloth, and finally wiping with a dry cloth.
A problem with retesting a specimen that has been previously tested using liquid penetrant is that the: - ANSWER- penetrant residue left in discontinuities may not readily dissolve, and the retest may be misleading.
A commonly used method of checking the overall performance of a penetrant
material system is to: - ANSWER- compare two sections of artificially cracked
specimens.
The function of the emulsifier in the post-emulsified penetrant process is to: - ANSWER- react with the surface penetrant to make the penetrant water-washable.
The penetration of eddy current in a conductive material is decreased when the: - ANSWER- test frequency, the conductivity of the specimen, or permeability of the specimen is increased.
At a fixed test frequency, in which of the following materials will eddy current penetration be greatest? - ANSWER- Lead (7% IACS conductivity)
A term used to describe the effect observed due to a change in the coupling between a test specimen and a flat probe coil when the distance of the separation
between them is varied is: - ANSWER- Liftoff.
- / 3