Visual Testing (VT) Review Questions

Question 1

1. What is visual testing?
   A. Detection of surface anomalies and various color variations
   B. Optical detection of surface anomalies and check conformation to specification
   C. Evaluation of metallurgical conditions via electron microscope
   D. Examination for wide variety of discontinuities open to the surface or just below

Answer 1

B. Optical detection of surface anomalies and check conformation to specification

Question 2

2. What element of the eye is analogous to the film of a camera, receiving and documenting an image of the world?
A. Optic nerve
B. Iris
C. Cornea
D. Retina

Answer 2

D. Retina

Question 3

3. Illumination varies inversely as the square of the distance between the source and the point on the surface increases.  What is this law called?
A. Inverse square law
B. Cosine law
C. Generation of light law
D. Lamberts law

Answer 3

A. Inverse square law

Question 4

4. When measuring surface roughness, Ra is defined as what?
   A. Average distance between the peak and valley points
   B. Average waviness from crest to trough
   C. Average distance of the profile to the mean line
   D. Parameter of friction between contract surfaces

Answer 4

C. Average distance of the profile to the mean line

Question 5

5. What do inspectors need to have in addition to being proficient in the testing process to increase the probability of finding reject-able discontinuities with maximum efficiency? 
A. Ironclad specifications
B. Knowledge of acceptance critera
C. Motivation to perform 
D. Caring supervision

Answer 5

C. Motivation to perform

Question 6

6. What magnifying power is typically available for field, pocket, pen or measuring microscopes that are small and handheld?  
A. Between 5x and 20x
B. Between 10x and 50x
C. Between 5x and 100x
D. Greater than 50x

Answer 6

B. Between 10x and 50x

Question 7

7. What is the minimum luminance recommended by the Illuminating Engineering Society (IES0 for task lighting with medium contrast and small size detection desired?
A. 100 lx
B. 200 lx
C. 500 lx
D. 2,000 lx

Answer 7

C. 500 lx

Question 8

8. What is the direction of view called in a bore scope or video scope when viewing 45 degrees off the straight-ahead direction of the probe?
A. Forward slant
B. Forward oblique 
C. Forespective 
D. Angulated

Answer 8

B. Forward oblique

Question 9

9. How many bundles are there in a fiber optic borescope and what are they called?
   A. One; monochromatic bundle
   B. Two; light guide and image guide
   C. Two; light guide and CCD cable bundle
   D. Three; light guide, image guid and fiber sheath

Answer 9

B. Two; light guide and image guide

Question 10

10. Which remote camera system is singularly best suited to inspect stainless subbing for weld conditions or cleanliness, process piping, drain lines and heat exchanger tubing?
A. Crawler mounted camera
B. Probe camera 
C. Pan, tilt and zoom camera
D. Push camera

Answer 10

D. Push camera

Question 11

11. What is a commonly evident surface discontinuity visible to the unaided eye following forming?
    A. Forging bursts at the center of a billet
    B. Edge breaks in temper rolled sheets of steel
    C. Laminations at the end preparations of plate for welding
    D. Segregation between pours

Answer 11

B. Edge breaks in temper rolled sheets of steel

Question 12

12. What type of cracking occurs at the last termination point of a weld by shielded metal arc welding?
A. Hot tearing
B. Cold cracking
C. Hot cracking 
D. Crater crack

Answer 12

D. Crater crack

Question 13

13. Which type of nuclear reactor vessel may have all its internals removed from the vessel to allow visual inspection?
A. Boiling water reactor (BWR)
B. Pressurized water reactor (PWR)
C. Light water reactor (LWR)
D. Heavy water reactor (HWR)

Answer 13

B. Pressurized water reactor (PWR)

Question 14

14. What might be required after visual inspection of steel fasteners in wrought aluminum plate in a lap joint of an aircraft with evidence of exfoliation?  
A. Computers radiography exams
B. Immersion ultrasonic exams
C. Fluorescent penetrant testing
D. Ultrasonic C-scan

Answer 14

D. Ultrasonic C-Scan

Question 15

15. What is pillowing on aircraft lap joints, typically on aircraft skins, usually attributed to?
    A. Misalignment of fasteners used to attach the skins to the airfram
    B. Expansion of corrosion products under the skins
    C. Stretching of the skins beyond their yield point over time
    D. Twisting of the airframe during tight turns and similar maneuvers

Answer 15

B. Expansion of corrosion products under the skins

Question 16

16. When inspecting welds for discontinuities located by visual testing of pressure vessels and storage tanks, which of the following discontinuities is allowed to be present to some degree?
A. Undercut
B. Cracks
C. Lack of fusion
D. Incomplete penetration

Answer 16

A. Undercut

Question 17

17. Which of the following is an example of an organization that publishes standards for test techniques:
A. ASNT
B. API
C. OSHA
D. ASTM

Answer 17

D. ASTM

Question 18

18. How can the heat affected zone (HAZ) of carbon steel welds be made visible?
    A. Etchants enhance the visibility of the microstructure
    B. High-frequency ultrasonic microscopic means
    C. Color-contrast penetrating liquids
    D. Arrays of temperature-sensitive markings

Answer 18

A. Etchants enhance the visibility of the microstructure

Question 19

19. Pixels used in digital photographs or images is a term that comes from what combination of words?
    A. Photography, inserts and electric laser
    B. Pie, excel and light
    C. Positional “x” elements
    D. Picture elements

Answer 19

D. Picture elements