Top 150+ Solved Radiographic Testing Level 1 MCQ Questions Answer
Q. Which of the following factors affect film graininess?
a. Wavelengths of radiation
b. Film processing conditions
c. Film speed
d. All of the above
Q. The amount of radioactivity which corresponds to 3.7 × 1010 disintegrations per secondis called:
a. 0.01 gray (1 rad)
b. 1 Farad
c. 37 GBq (1 curie)
d. 10 mSv (1 roentgen)
Q. The result of filtering the X rays is to produce:
a. More geometric unsharpness
b. Less geometric unsharpness
c. Softer radiation
d. Harder radiation
Q. Which of the following actions is performed by lead screens?
a. Absorbs a portion of the primary radiation beam
b. Preferentially absorbs soft X rays
c. Emits electrons under gamma and X ray fields
d. All of the above
Q. The total radiation dose received equals:
a. The radiation intensity
b. The source size in curies
c. Radiation intensity times time of exposure
d. Radiation intensity divided by the square of the distance from the source
Q. Which of the following is the most common type of X ray tube?
a. Bipolar
b. Unipolar
c. Long anode
d. None of the above
Q. A reaction which occurs when a radiation beam of 15 MeV is partially absorbed by atest piece would probably be:
a. The Compton effect
b. The photoelectric effect
c. Pair production
d. Any of the above
Q. A reaction which occurs when a radiation beam of 50 keV is partially absorbed by a testpiece would probably be:
a. The Compton effect
b. The photoelectric effect
c. Pair production
d. Any of the above
Q. A lethal dose of complete body radiation is normally considered to be:
a. 1-2 Sv (100-200 rem)
b. 250-500 mSv (25-50 rem)
c. 6-8 Sv (600-800 rem)
d. 500 mSv (50000 mrem)
Q. Almost all gamma radiography today is done with artificially activated:
a. Particles
b. Isotopes
c. Radium
d. X ray machines
Q. A Curie (37 gigabecquerel)of radioactive material will disintegrate at the rate of:
a. 37 million (3.7 × 107) disintegrations per second
b. 37 billion (3.7 × 1010) disintegrations per second
c. 37 trillion (3.7 × 1013) disintegrations per second
d. None of the above
Q. The specific activity of radioactive isotopes is measured in:
a. MeV (million electron volts)
b. R/h (roentgens per hour) or gray per hour
c. Ci/g (curies per gram) or Becquerel per gram
d. Counts per minute (c/min)
Q. What is the primary difference between X rays and gamma rays of the same energy?
a. Wavelength
b. Frequency
c. Velocity
d. Origin
Q. Screens should be:
a. Separated from the film by a sheet of clean white paper
b. Separated from the film by at least 3.125 mm
c. In direct contact with the film
d. Separated from the film by its cardboard backing
Q. Lead foil in direct contact with the film in a cassette absorbs:
a. All radiation to protect the film from exposure
b. Light rays that might otherwise expose the film
c. Long wave length radiation more than short wavelength
d. Short wavelength radiation more than long wavelength