Question:

An ultrasonic data display which shows a plan view presentation of the data is called:

A.

A scan

B.

B scan

C.

C scan

D.

Orthogonal view

Answer» c. C scan

Question:

A 7.6 cm (3 inches) thick test specimen is radiographed with a source having size of 1.3 cm (1/2 inch), the film is placed in contact with the test specimen. The source to film distance is 40.6 cm (16 inches).The geometric unsharpness obtained is:

A.

0.1 cm

B.

0.3 cm

C.

0.5 cm

D.

1.0 cm

Answer» b. 0.3 cm

Question:

Calculate geometric unsharpness for the following conditions: Source size = 2 mm × 2mm; SFD = 700 mm; test piece thickness = 25 mm

A.

0.6 mm

B.

0.06 mm

C.

6,0 mm

D.

0.15 mm

Answer» d. 0.15 mm

Question:

Dark crescent-shaped indications on a radiographic film are most likely caused by:

A.

Crimping film after exposure

B.

Crimping film before exposure

C.

Sudden extreme temperature change while processing

D.

Warm or exhausted fixer

Answer» a. Crimping film after exposure