DANB MOCK TEST EXAM | QUESTIONS & 100% VERIFIEDANSWERS | LATEST UPDATE | PASSED

DANB MOCK TEST EXAM | QUESTIONS & 100% VERIFIEDANSWERS | LATEST UPDATE | PASSED The dentist says that the image has too much contrast; she would like to see more gray values. What adjustment would you make? Correct Answer: Increase kVp. All of the following are true statements about film badges except: a. they should be worn at work only. b. if an assistant follows all safety precautions; exposure should be near zero. c. they should be worn when any form of x-ray is taken. d. the badge is usually worn for 3 to 4 weeks before returning it for reading. Correct Answer: c. they should be worn when any form of x-ray is taken. Each of the following is true about digitizing film-based radiographic images except: a. it duplicates with slightly less detail than the original film. b. desktop scanners capture the light signal. c. the process is similar to other film duplication. d. digitized film-based images cannot be enhanced by computer software 2 Correct Answer: d. digitized film-based images cannot be enhanced by computer software The penetrating power of the x-ray beam is controlled by the settings on the: Correct Answer: kilovoltage setting. All of the following organs are more sensitive to radiation and are considered critical organs except: a. skin. b. thyroid gland. c. muscle. d. lens of the eye. Correct Answer: c. muscle The maximum permissible dose for an occupational worker for an individual 18 years of age or older is _____ rem/year. Correct Answer: 5 rem/year Which of the following terms is used to describe the energy or penetrating ability of the x-ray beam in dental radiography? a. Quantity b. Quality c. Collimation 3 d. Density Correct Answer: b. Quality Which of the following is the name for the primary kind of radiation produced in the dental x-ray tubehead? a. Braking radiation b. Characteristic radiation c. Particulate radiation d. Electromagnetic radiation Correct Answer: a. braking radiation Which of the following statements is true concerning the structure of the atom? a. Electrons have no weight or mass. b. The orbital path of an electron around the nucleus is called an electron shell. c. Electrons are unstable in their orbits and shift freely. d. The nucleus contains protons and electrons. Correct Answer: b. The orbital path of an electron around the nucleus is called an electron shell. Jimmy wants to know why you want to put the heavy "blanket" (lead apron) on him before taking his "pictures." You explain that: Correct Answer: "It works to protect him from scatter radiation