FULL QUESTION SET APPROVED
◉ Which of the following casting discontinuities are created during
solidification that can cause the area between a thicker section and a
thinner section to break. Answer: Hot tears
◉ Which of the following is a visible discontinuity in rolled products.
Answer: Rolled in scale
◉ In the US, a discontinuity is typically considered linear if:. Answer:
The length is more than three times (3x) the width
◉ Casting processes are considered either:. Answer: dynamic or
static
◉ During the rolling process, billets are rolled into:. Answer: Bars
◉ When the molten metal is under a constantly applied force toward
the mold, it is known as:. Answer: Dynamic casting
◉ The lack of compaction in a sand casting may result in line
structures on the surface of the casting, known as:. Answer: Veining
,◉ All of the following are casting discontinuities except:
-Laminations
-Cold Shuts
-Rat Tails
-Chaplets. Answer: Laminations
◉ Wrought products may include a(n) _______ process before being
finished. Answer: Rolling
◉ Porosity appears in any of the following forms except:
Clustered
Linear
Adhering
Isolated. Answer: Adhering
◉ In rolled products, which type of discontinuity resembles a crack
but lacks sharp edges?. Answer: Scratch
◉ Cold shuts are very common casting discontinuities and:. Answer:
Their abrupt nature makes them crack originators
, ◉ Judging that acceptability of welds must be based on:. Answer:
referencing the applicable code, standard, or specification
◉ Which of the following is a correct statement?. Answer: Visual
testing may miss some discontinuities and need to be supplemented
by other NDT methods.
◉ In general, which of the following discontinuities is not acceptable
regardless of size?
-Incomplete penetration
-Undercut
-Incomplete fusion
-Crack. Answer: Crack
◉ Joint profile of finished welds is controlled by:. Answer: Design
requirements
◉ In most codes, maximum reinforcement is based on:. Answer:
Material thickness
◉ Personal performing visual testing are required to be certified in
accordance with:. Answer: The employer's written practice that is
based on SNT-TC-1A