kvpmyne

chap 1

Certainly! Here's a 20-item multiple choice quiz based on the provided text: **Multiple Choice Quiz:** 1. Who discovered X-rays on November 8, 1895? a) Marie Curie b) Wilhelm Conrad Roentgen c) Thomas Edison d) Albert Einstein 2. What material emitted a faint glow when exposed to X-rays? a) Aluminum b) Lead c) Barium platinocyanide d) Copper 3. What did Roentgen use to cover his X-ray tube when he made his discovery? a) Black cardboard b) Glass c) Plastic d) Metal 4. What did Roentgen call the new type of energy he discovered? a) Radiowaves b) X-rays c) Gamma rays d) Ultraviolet rays 5. What was the first radiograph created by Roentgen? a) His own hand b) His wife's hand c) His pet dog d) A flower 6. What branch of medical science specializes in the production and utilization of images to diagnose diseases? a) Geology b) Radiology c) Botany d) Chemistry 7. What are radiologic technologists trained to do? a) Perform surgeries b) Diagnose diseases through lab tests c) Use radiation to produce images and assist radiologists d) Develop new X-ray machines 8. Which of the following is a characteristic of a good radiograph? a) Blurry image b) Overexposure c) Adequate exposure factors d) Small field size 9. What are X-rays primarily composed of? a) Electrons b) Protons c) Photons d) Neutrons 10. What is the purpose of the rotating anode in an X-ray tube? a) To generate heat b) To produce electricity c) To direct the electron beam d) To dissipate heat 11. Which metal is commonly used for the anode in an X-ray tube? a) Iron b) Copper c) Tungsten d) Aluminum 12. What is the role of the stator in the X-ray tube? a) To rotate the anode b) To generate X-rays c) To cool the tube d) To control exposure time 13. What are deadman switches used for in X-ray exposure? a) To maximize radiation dose b) To reduce exposure time c) To terminate the exposure if not held d) To increase the exposure time 14. What is the space charge effect in X-ray production? a) Reduced thermionic emission due to electrostatic repulsion b) Rapid production of X-rays c) Formation of a cloud of electrons d) The effect of gravity on electrons 15. What are the prime exposure factors controlled by the radiographer? a) Temperature and humidity b) Time and date c) kVp, mA, and exposure time d) Patient's medical history 16. What does mAs stand for in X-ray exposure? a) Millimeter of aluminum b) Milliampere-seconds c) Megawatts per second d) Millisecond exposure 17. What is the maximum potential difference across the X-ray tube called? a) kVp b) mA c) mAs d) Focal spot 18. What is the primary purpose of the focusing cup in the cathode? a) To emit X-rays b) To shape and direct the electron beam c) To dissipate heat d) To protect the anode 19. What percentage of kinetic energy is converted to heat when electrons strike the anode? a) Less than 1% b) About 10% c) More than 50% d) 100% 20. What is the main purpose of X-ray production in an X-ray tube? a) To generate electricity b) To produce heat c) To create X-ray images d) To produce visible light **Answer Key:** 1. b) Wilhelm Conrad Roentgen 2. c) Barium platinocyanide 3. a) Black cardboard 4. b) X-rays 5. b) His wife's hand 6. b) Radiology 7. c) Use radiation to produce images and assist radiologists 8. c) Adequate exposure factors 9. c) Photons 10. d) To dissipate heat 11. c) Tungsten 12. a) To rotate the anode 13. c) To terminate the exposure if not held 14. a) Reduced thermionic emission due to electrostatic repulsion 15. c) kVp, mA, and exposure time 16. b) Milliampere-seconds 17. a) kVp 18. b) To shape and direct the electron beam 19. a) Less than 1% 20. c) To create X-ray images

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