1. A failsafe design for an x-ray system component would shut off x-rays or close a shielded shutter if a problem was detected:
     a) True.
     b) False.
     c)
     d)

2. The HARP Act refers to;
     a) The Health Arts Radiological Practices Act.
     b) The Helping Associates Radiator Protection Act.
     c) The Healing Arts Radiation Protection Act.
     d) The Healing Arts Radiologic Policy Act.

3. What is the third basic of radiation protection if distance and time are the first two?;
     a) ? = shielding.
     b) ? = kilovoltage.
     c) ? = .
     d)

4. An atom is in an ionized state if it has;
     a) More electrons than neutons.
     b) More protons than neutrons.
     c) More or less electrons than protons
     d) None of the above

5. An example of redundant safety for an x-ray system would be:
     a) Two lamps wired so that one would illuminate to show system status even if the other failed.
     b) Two door switches wired so that both must show it closed before x-ray is enabled.
     c) Both a and b.
     d) None of the above

6. Regulation 861 under the Occupational Health and Safety Act regulates;
     a) X-ray devices used on human beings for medical purposes.
     b) X-ray devices used on human beings for research purposes.
     c) X-ray devices used on animals and non-living subjects.
     d) The Ministry of Labour does not regulate the use of x-rays

7. Under the linear model of risk, half the occupational dose to x-rays implies;
     a) Double the risk.
     b) Half the risk.
     c) No change in the risk.
     d) Quadruple the risk.

8. All of the following are properties of x-rays EXCEPT
     a) Travels in straight lines until absorbed or deflected.
     b) Can ionize atoms.
     c) Easily stopped by low density materials, like styrofoam.
     d) Can break molecular bonds.

9. What is the radiation dose limit to radiation workers in STTARR in blended (e.g. nuclear and x-ray) settings?
     a) 100 milli-Sieverts/year
     b) 1 milliRoentgen/year
     c) 20 milli-Sieverts/year
     d) 40 Sieverts/year

10. What is the minimum lead equivalency rating of the front of a protective apron?
     a) 0.25 mm lead.
     b) 0.5 mm lead.
     c) 1 mm lead.
     d) None of the above.