Top 150+ Solved Radiographic Testing Level 2 MCQ Questions Answer
Q. A large source size can be compensated for by:
a. Increasing source-to-specimen distance
b. Addition of lead screens
c. Increasing specimen-to-film distance
d. Increasing penumbra
Q. The maximum film density to which the radiograph should be exposed is dependent upon:
a. The quality of the film viewer
b. The variation in thickness of the specimen
c. The speed of the film
d. The graininess of the film
Q. The selection of the proper source-to-film distance is a primary factor in controlling:
a. Contrast
b. Unsharpness
c. Graininess
d. Scatter
Q. When the penumbra on a radiograph measures less than 0.5 mm (0.020 inches), theimage will appear to unaided eye of the film interpreter as:
a. Fuzzy
b. Sharp
c. Distorted
d. Dark
Q. Two X ray machines operating at same nominal kilovoltage and milliamperagesettings:
a. Will produce the same intensities and energies of radiation
b. Will produce the same intensities but produce different energies of radiation
c. Will produce the same energies but may produce different intensities of radiation
d. May give not only different intensities, but also different energies of radiation
Q. The fact that gases, when bombarded by radiation, ionise and become electricalconductors make them useful in:
a. X ray transformers
b. X ray tubes
c. Masks
d. Radiation detection equipment
Q. A weld discontinuity which consists of unmelted joint surfaces at the root, and whichmay be caused by poor fit-up, is called:
a. Hot short cracking
b. A slag inclusion
c. Incomplete penetration
d. Burn through
Q. Which of the following welding discontinuities would be most difficult to imageradiographically:
a. Planar lack of fusion
b. Incomplete penetration
c. Undercut
d. Slag inclusions
Q. The average energy of a Ir-192 source is approximately:
a. 60-80 keV
b. 660 keV
c. 400 keV
d. 1.2 MeV
Q. If the required exposure time for a 50 Curie Ir-192 source is 4 minutes, what exposuretime would be required at 25 Curie source:
a. 4 minutes
b. 8 minutes
c. 2 minutes
d. 16 minutes
Q. Which of the following is not a function of the lead screen placed around radiographic film?
a. Increase the photographic action on the film
b. Selectively absorbs scattered radiation
c. Intensifies effects of the primary radiation beam
d. To mask the test piece
Q. Which of the following is a function of the lead screen placed around radiographic film?
a. Masks the test piece
b. Improves geometric unsharpness
c. Intensifies effects of the primary radiation beam
d. None of the above
Q. What is the best advantage achieved in exposure time, using front and back lead screens, as compared to exposure time without screens?
a. About the same, but less scatter
b. About twice as great, but less scatter
c. 1/2 to 1/3
d. Not related
Q. Gamma ray or high voltage X ray radiography, using film without lead screens, is likelyto result in:
a. Mottling of the film
b. Increased geometric unsharpness
c. No apparent difference, but increased exposure time
d. No apparent difference, but decreased exposure time