Top 150+ Solved Radiographic Testing Level 1 MCQ Questions Answer
Q. A casting flaw which is formed when two masses of molten metal flowing fromdifferent directions flow together, but fail to fuse, is called:
a. A hot tear
b. Shrinkage
c. A cold crack
d. A cold shut
Q. X rays are produced by:
a. Radioactive isotopes
b. The rapid deceleration of electrons
c. Ultraviolet radiation of unstable atoms
d. All of the above
Q. Which of the following is a function of lead screens?
a. To reduce geometric unsharpness
b. To increase scatter
c. To reduce exposure time
d. All of the above
Q. A silver nitrate spot test might be used to:
a. Check for archival film quality
b. Check for out of date film
c. Check for single versus double emulsion film
d. Any of the above
Q. A linear accelerator is used to produce X rays having energy in the range of:
a. Several MeV
b. 50-500 keV
c. 500-1000keV
d. 0-50 keV
Q. How is the wavelength of scattered radiation compared to the primary beam?
a. Longer than the wavelength of the primary beam
b. Shorter than the wavelength of the primary beam
c. Same as the wavelength of the primary beam
d. Not related
Q. Which of the following viewing conditions is most desirable for interpreting radiographic film?
a. Brightness of surroundings approximately the same as the area of interest on the radiograph
b. Totally dark viewing room
c. Well lit viewing room
d. None of the above
Q. Pinhole radiography would be used to:
a. Make high quality radiographs for critical inspection
b. Determine focal spot size
c. Construct exposure charts
d. None of the above
Q. A straight, dark line in the centre of the film of a weld cap would probably be:
a. Porosity
b. Undercut
c. Tungsten inclusions
d. A linear crack
Q. Which one of the following steps is necessary to dissolve the undarkened silver saltcrystals in the film emulsion:
a. Developing
b. Fixing
c. Washing
d. None of the above
Q. Approximately what energy X ray machine would be required to have penetratingpower equivalent to a Cobalt-60 source:
a. 600 keV
b. 1.2 MeV
c. 2 MeV
d. None of the above
Q. The normal range of steel that is radiographed using Ir-192 is:
a. 5 mm–20 mm
b. 25 mm – 75 mm
c. 0.5 mm – 5 mm
d. 75 mm – 150 mm
Q. The focal spot size of an X ray machine must be known in order to determine:
a. The geometric unsharpness
b. Kilovoltage peak output
c. Required mA setting
d. Exposure time
Q. X ray intensity is a function of :
a. Cathode current
b. Step down ratio of the filament transformer
c. The distance from the test piece
d. Size of the anode (target)
Q. What is the minimum age in years at which a person may perform radiography :
a. 15
b. 18
c. 21
d. 30