Completed
PT Set 2
Rating
0
0
There are no comments for now.
1.
Which property of a penetrant most directly drives capillary action into a tight crack?
2.
A test technician notices that a previously sand-blasted aluminium part shows almost no penetrant indications. The most likely cause is:
3.
Mercury vapour black light intensity decreases noticeably below approximately what supply voltage?
4.
The best penetrant process for a job site at 5 °C ambient temperature is:
5.
Which step in fluorescent water-washable testing is monitored under UV-A?
6.
Indications resulting from threads, splines or press-fit joints are best classified as:
7.
Approximately how long must a freshly switched mercury vapour black light warm up before use?
8.
If a mercury vapour lamp is momentarily turned off, before restart it should cool for approximately:
9.
Eye dark adaption before fluorescent inspection should be approximately:
10.
Which is the most common penetrant bath contaminant?
11.
The MAIN advantage of post-emulsifiable penetrants over water-washable is:
12.
Which type of developer normally has the HIGHEST sensitivity?
13.
A penetrant whose excess can be controlled in washability by varying emulsifier dwell is called:
14.
UV-A used for fluorescent PT is most active around:
15.
Which developer should NOT be used with visible (red dye) penetrant?
16.
The proper way to apply emulsifier is by:
17.
Which of the following is NOT recommended?
18.
The chief advantage of solvent-removable visible penetrant is:
19.
Most important time variable in penetrant testing is:
20.
Open, shallow discontinuities are most reliably detected with which method?
21.
Excess penetrant removed using a coarse water spray on water-washable systems should be at approximately:
22.
The two key parameters that determine a penetrant's ability to fill a fine crack are:
23.
The eye is most sensitive to which colour of light under photopic vision?
24.
A water-washable penetrant is sometimes called:
25.
Penetrant testing of large numbers of small parts at low cost is favoured by:
26.
After PT, residue on steel parts can cause rust if:
27.
Mercury vapour lamp output depends on which of the following?
28.
Acceptable application of penetrant includes:
29.
In post-emulsifiable testing, draining excess penetrant before emulsification helps to:
30.
Aluminium quench-crack reference blocks are used primarily to:
31.
If excess penetrant cannot be rinsed clean from a post-emulsifiable test:
32.
Constant rinse-water temperature is required to:
33.
A separate emulsifier step is characteristic of:
34.
Emulsification time is LEAST critical for indications of:
35.
Which developer requires application to a DRY surface?
36.
Sand blasting a soft aluminium part during pre-cleaning is generally:
37.
After applying developer, the part should be viewed:
38.
Drying after rinse should be performed:
39.
Hydrophilic emulsifier differs from lipophilic in that hydrophilic:
40.
Black light (UV-A) emitted by mercury vapour lamps for penetrant inspection has a wavelength of approximately:
41.
During post-emulsifiable inspection, an excessively short emulsifier dwell most often results in:
42.
Diffusion of a lipophilic emulsifier into the penetrant is stopped by:
43.
Drain-dwell after emulsification mixes emulsifier with penetrant primarily by:
44.
If a post-emulsifiable test cannot be rinsed clean, the proper action is:
45.
Adequacy of excess penetrant removal for water-washable processes is judged by:
46.
A self-emulsifying penetrant is also called:
47.
Function of an emulsifier is to:
48.
Under UV-A illumination, undeveloped white developer typically appears:
49.
Penetrant developers are used in form of:
50.
Which developer requires a fully dried test surface before application?
51.
An overly thick developer film may:
52.
Periodic viewing during development time is required to:
53.
Advantages of dry developer include:
54.
Why is a dry surface more critical with dry developer than with non-aqueous wet?
56.
Soluble developer thickness is easier to control than suspendable because:
57.
Which of the following is NOT an advantage of aqueous wet developer?
58.
A disadvantage of water-soluble developers is:
59.
Fluorescent penetrant indications are brighter than visible-dye indications because:
60.
Recommended density (concentration) of suspendable developer is checked by: