VT II B General
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1.
A main advantage of visual testing over most other NDT methods is that it is:
2.
Direct visual examination is one in which:
3.
Remote visual examination is one in which:
4.
The part of the eye that controls the amount of light entering it is the:
5.
The part of the eye that changes shape to focus light on the retina is the:
6.
The gradual loss of the ability to focus on near objects with age is called:
7.
Colour perception is commonly tested with:
8.
Normal visual acuity corresponds to resolving a visual angle of about:
9.
The adjustment of the eye when moving from a bright area into a dim area is called:
10.
Long periods of visual examination without breaks may cause:
11.
Luminous flux is measured in:
12.
A surface receiving 1 lumen per square foot has an illuminance of:
13.
1000 lux is approximately equal to:
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If a light source is moved from 0.5 m to 1.0 m from a surface, the illuminance becomes:
15.
In visual testing, contrast refers to:
16.
For a bright, shiny stainless steel weld, the best lighting is usually:
17.
Light reflected in many directions from a rough surface is called:
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The bending of light as it passes from one medium into another is called:
19.
A mirror is used in visual examination mainly to:
20.
A measuring magnifier with a reticle is used to:
21.
Depth of field is:
22.
In a fiberscope, the light guide bundle is:
23.
Articulation of a flexible borescope refers to:
24.
An advantage of recording images with a videoscope is that:
25.
A remote-measurement technique that projects a line onto the target and uses its position to calculate size is called:
26.
A bridge cam (multi-purpose) weld gauge can measure:
27.
The size of an unequal-leg fillet weld is defined by:
28.
The theoretical throat of an equal-leg 3/8 in. fillet weld is about:
29.
Lack of fusion between weld metal and base metal, or between weld beads, is called:
30.
Failure of weld metal to extend through the joint thickness at the root is called:
31.
An elongated gas cavity that often extends toward the weld surface is called:
32.
Small droplets of metal thrown out during welding that stick to the nearby base metal are called:
33.
Groove weld reinforcement higher than the allowable limit is recorded as:
34.
Burn-through (melt-through) is:
35.
A discontinuity in wrought products caused by metal folding over the surface during forging or rolling is a:
36.
Hot tears are discontinuities associated with:
37.
Erosion damage in piping is:
38.
Stress corrosion cracking requires the combination of:
39.
Under SNT-TC-1A, certification records are maintained by the:
40.
Under SNT-TC-1A, a Level II individual may: