Top 150+ Solved Radiographic Testing Level 2 MCQ Questions Answer
Q. A radiographic indication in a weld, characterised by two parallel dark lines in the filmimage, would probably be caused by:
a. Incomplete penetration
b. Lack of fusion
c. Slag inclusions
d. Tungsten inclusions
Q. To produce the sharpest image, which of the following should be true?
a. The radiographic source should be small
b. The radiographic source should be as close as possible to the test piece
c. The planes of the test piece and the film should be at oblique angles to each other
d. All of the above
Q. ‘Undercut’ or ‘burned out’ edges of the test piece film image are caused by:
a. Geometric unsharpness
b. Scattered radiation
c. Inadequate source to film distance
d. Old film
Q. Which of the following is an advantage of gamma ray over X ray sources forradiography?
a. Portability
b. No external power supply needed
c. Ruggedness
d. All of the above
Q. The intensifying effects of fluorescent screens are caused by:
a. Electron emission
b. Light emission
c. Secondary X rays
d. All of the above
Q. If the required X ray exposure time for a 225 kV, 5 mA exposure is 3 minutes,approximately what exposure time would be required at 10 mA?
a. 1/2 minute
b. 1 minute
c. 1.5 minutes
d. 3 minutes
Q. Unacceptable radiographic film quality would be indicated by:
a. Artifacts of known origin in the film's area of interest
b. Use of a smaller penetrameter than required
c. H & D density less than 2.0
d. All of the above
Q. Which of the following welding discontinuities would be most difficult to imageradiographically:
a. Porosity
b. Lack of side wall fusion
c. Undercut
d. Slag inclusions
Q. The most important factor in limiting radiation exposure is:
a. Time
b. Distance
c. Shielding
d. All of the above
Q. The threshold energy below which pair production cannot occur is approximately:
a. 100 keV
b. 1 MeV
c. 10 MeV
d. 20 MeV
Q. A photon-electron interaction in which a photon gives up all its energy to an electronis called:
a. The photoelectric effect
b. The Compton effect
c. Pair production
d. Bremsstrahlung
Q. An acceptable quality radiograph should include:
a. Proper identification
b. Correct penetrameter and visible holes
c. Location markers
d. All of the above
Q. For gamma ray sources, radiographic intensity is proportional to source activity ingigabecquerels or curies for:
a. All sources
b. Large sources
c. Small sources
d. None of the above
Q. Poor contact between lead screens and film is likely to cause:
a. An indistinct or ‘fuzzy’ image
b. A mottled appearance on the film
c. ‘Undercut’ of the test piece image
d. Increased geometric unsharpness