CRI Radiographic Film Interpretation 3

Question 1

On a radiograph, burn-through in a weld is identified by:

Accepted Answer

A very dark, rounded or irregular area at the weld center

Answer

Burn-through appears as a very dark area because the excess melt-through creates a void or depression with less material to absorb radiation.

Question 2

Geometric unsharpness (Ug) in radiography is reduced by:

Accepted Answer

Decreasing source size and increasing SFD

Answer

Geometric unsharpness decreases with a smaller source size and a greater source-to-film distance, producing a sharper image.

Question 3

Which type of radiation scatter most degrades radiographic image quality?

Accepted Answer

Back scatter

Answer

Back scatter, originating from material behind the film, strikes the film from the film side and can significantly fog and degrade image quality.

Question 4

The radiographic image of an elongated slag inclusion typically appears as:

Accepted Answer

An irregular dark linear or elongated indication

Answer

Slag inclusions, being less dense than weld metal, appear as irregular dark elongated indications on the radiograph.

Question 5

When the required wire of an IQI is visible on a radiograph, it indicates that:

Accepted Answer

The required level of radiographic sensitivity has been achieved

Answer

Visibility of the designated IQI wire confirms that the radiograph meets the required sensitivity specified by the applicable code or standard.

(CRI) Certified Radiographic Interpreter Practice Test