X-Ray Production MCQs For Govt Exam Practice : SSC, UPSC, AIIMS
X-Rays are produced in an X-ray tube by accelerating electrons from a heated filament (cathode) toward a tungsten target (anode). When the fast electrons strike the tungsten atoms, X-ray photons are generated. These photons form a beam that can be used for medical imaging or industrial testing. The X-ray tube typically includes a collimator, filters, and a detector to refine and capture the X-ray images.
- A) Generate X-ray photons
- B) Accelerate electrons
- C) Focus the X-ray beam
- D) Absorb X-rays
Answer: B) Accelerate electrons
2. Which material is commonly used as the target (anode) in an X-ray tube?
- A) Aluminum
- B) Copper
- C) Tungsten
- D) Lead
Answer: C) Tungsten
3. How are X-ray photons generated in an X-ray tube?
- A) Ionization of gas
- B) Magnetic resonance
- C) Collision of electrons with target atoms
- D) Radioactive decay
Answer: C) Collision of electrons with target atoms
4. What is the purpose of a collimator in X-ray imaging?
- A) Generate X-rays
- B) Focus the electron beam
- C) Refine the X-ray beam's direction
- D) Capture X-ray images
Answer: C) Refine the X-ray beam's direction
5. Why is tungsten commonly used as the anode material in X-ray tubes?
- A) It's a good conductor of electricity
- B) It has a low atomic number
- C) It can withstand high heat
- D) It's cost-effective
Answer: C) It can withstand high heat
6. What initiates the release of electrons from the cathode in an X-ray tube?
- A) Magnetic field
- B) Thermionic emission
- C) Radioactive decay
- D) Photoelectric effect
Answer: B) Thermionic emission
7. In the X-ray tube, what is accelerated by a
high voltage to generate the electron beam?
- A) Protons
- B) Electrons
- C) Neutrons
- D) Photons
Answer: B) Electrons
8. What role do filters play in X-ray imaging?
- A) Absorb low-energy X-rays
- B) Generate X-rays
- C) Focus the X-ray beam
- D) Accelerate electrons
Answer: A) Absorb low-energy X-rays
9. Which type of X-ray examination is commonly used to visualize bones?
- A) Fluoroscopy
- B) Mammography
- C) Computed Tomography (CT)
- D) Radiography
Answer: D) Radiography
10. What is the purpose of the X-ray detector in the imaging process?
- A) Accelerate electrons
- B) Generate X-ray photons
- C) Capture X-ray images
- D) Refine the X-ray beam's direction
Answer: C) Capture X-ray images
11. What is the unit of measurement for X-ray exposure?
- A) Joule
- B) Watt
- C) Gray
- D) Roentgen
Answer: D) Roentgen
12. Which body tissues are more permeable to X-rays, allowing them to pass through more easily?
- A) Bones
- B) Muscles
- C) Fat
- D) Skin
Answer: C) Fat
13. What is the purpose of lead aprons in medical X-ray procedures?
- A) Block X-ray photons
- B) Accelerate electrons
- C) Generate X-rays
- D) Focus the X-ray beam
Answer: A) Block X-ray photons
14. In which application are X-rays commonly used for material inspection without damaging the object?
- A) Radiography
- B) Fluoroscopy
- C) Mammography
- D) Computed Tomography (CT)
Answer: A) Radiography
15. How does a higher atomic number of a material affect its ability to produce X-rays?
- A) Increases X-ray absorption
- B) Decreases X-ray absorption
- C) Does not affect X-ray absorption
- D) Enhances magnetic resonance
Answer: A) Increases X-ray absorption
16. What is the purpose of the collimator in an X-ray tube?
- A) Absorb X-rays
- B) Generate X-ray photons
- C) Focus the X-ray beam
- D) Accelerate electrons
Answer: C) Focus the X-ray beam
17. Which imaging technique uses X-rays to produce cross-sectional images of the body?
- A) Radiography
- B) Fluoroscopy
- C) Mammography
- D) Computed Tomography (CT)
Answer: D) Computed Tomography (CT)
18. What is the primary purpose of a lead-lined room in radiography departments?
- A) Block X-ray photons
- B) Accelerate electrons
- C) Generate X-rays
- D) Focus the X-ray beam
Answer: A) Block X-ray photons
19. In X-ray imaging, what is the primary factor determining the contrast in the final image?
- A) X-ray wavelength
- B) Exposure time
- C) X-ray energy
- D) Collimator size
Answer: C) X-ray energy
20. Which imaging technique involves real-time X-ray visualization and is often used for procedures like catheter placement?
- A) Radiography
- B) Fluoroscopy
- C) Mammography
- D) Computed Tomography (CT)
Answer: B) Fluoroscopy
21. What is the purpose of the PID (Position-Indicating Device) in dental X-ray machines?
- A) Focus the X-ray beam
- B) Capture X-ray images
- C) Absorb X-rays
- D) Accelerate electrons
Answer: A) Focus the X-ray beam
22. Which imaging technique uses X-rays to visualize the movement of a contrast agent within blood vessels?
- A) Radiography
- B) Fluoroscopy
- C) Mammography
- D) Computed Tomography (CT)
Answer: B) Fluoroscopy
23. In X-ray terminology, what does the acronym ALARA stand for?
- A) As Low as Reasonably Achievable
- B) Accelerated Low-energy Radiography Approach
- C) Advanced Lead Absorption Reduction Algorithm
- D) Absolute Limitation of Radiation Absorption
Answer: A) As Low as Reasonably Achievable
24. What is the purpose of using a grid in radiography?
- A) Absorb X-rays
- B) Increase image contrast
- C) Generate X-ray photons
- D) Focus the X-ray beam
Answer: B) Increase image contrast
25. What is the term for the process by which X-rays interact with matter, resulting in the removal of inner-shell electrons?
- A) Photoelectric effect
- B) Compton scattering
- C) Fluorescence
- D) Ionization
Answer: A) Photoelectric effect
26. How does the use of contrast media enhance X-ray imaging in certain medical procedures?
- A) Increases X-ray absorption
- B) Decreases X-ray absorption
- C) Enhances tissue transparency
- D) Accelerates electron emission
Answer: A) Increases X-ray absorption
27. What is the primary safety concern regarding exposure to ionizing radiation in X-ray procedures?
- A) Thermal burns
- B) DNA mutation
- C) Allergic reactions
- D) Photographic effects
Answer: B) DNA mutation
28. Which type of X-ray examination is specialized for breast imaging?
- A) Fluoroscopy
- B) Mammography
- C) Computed Tomography (CT)
- D) Radiography
Answer: B) Mammography
29. What is the purpose of the collimator in dental X-ray machines?
- A) Block X-ray photons
- B) Focus the X-ray beam
- C) Capture X-ray images
- D) Accelerate electrons
Answer: B) Focus the X-ray beam
30. What does the acronym PACS stand for in the context of medical imaging technology?
- A) Picture Archiving and Communication System
- B) Patient Assessment and Care System
- C) Photon Absorption and Conversion System
- D) Portable X-ray Analysis and Control System
Answer: A) Picture Archiving and Communication System
31. Which X-ray imaging technique is commonly used for imaging soft tissues like organs and blood vessels with high detail?
- A) Radiography
- B) Fluoroscopy
- C) Mammography
- D) Digital Subtraction Angiography (DSA)
Answer: D) Digital Subtraction Angiography (DSA)
32. What is the purpose of a collimation device in X-ray imaging?
- A) Generate X-ray photons
- B) Absorb X-rays
- C) Focus and limit the X-ray beam
- D) Accelerate electrons
Answer: C) Focus and limit the X-ray beam
33. How does Compton scattering contribute to X-ray imaging?
- A) It increases image contrast.
- B) It produces scattered X-rays.
- C) It focuses the X-ray beam.
- D) It generates X-ray photons.
Answer: B) It produces scattered X-rays.
34. In X-ray terminology, what does the term "mA" represent?
- A) Milliampere
- B) Megaampere
- C) Millimeter of Aluminum
- D) Magnetic Absorption
Answer: A) Milliampere
35. Which imaging technique involves obtaining X-ray images from multiple angles to reconstruct a 3D representation of the scanned object?
- A) Radiography
- B) Fluoroscopy
- C) Mammography
- D) Cone Beam Computed Tomography (CBCT)
Answer: D) Cone Beam Computed Tomography (CBCT)
36. What is the primary purpose of lead shielding in X-ray facilities?
- A) Generate X-rays
- B) Absorb X-rays
- C) Accelerate electrons
- D) Focus the X-ray beam
Answer: B) Absorb X-rays
37. Which type of X-ray examination involves continuous X-ray exposure for real-time imaging during medical procedures?
- A) Radiography
- B) Fluoroscopy
- C) Mammography
- D) Computed Tomography (CT)
Answer: B) Fluoroscopy
38. What is the primary purpose of the X-ray grid in radiography?
- A) Increase image contrast
- B) Generate X-ray photons
- C) Focus the X-ray beam
- D) Capture X-ray images
Answer: A) Increase image contrast
39. What is the function of a collimation device in X-ray imaging?
- A) Block X-ray photons
- B) Focus and limit the X-ray beam
- C) Generate X-ray photons
- D) Accelerate electrons
**Answer: B) Focus and limit the X-ray beam**
40. Which factor affects the penetration ability of X-rays through matter?
- A) X-ray wavelength
- B) Collimator size
- C) Exposure time
- D) X-ray energy
Answer: D) X-ray energy
41. What is the primary purpose of the lead apron worn by patients during X-ray examinations?
- A) Generate X-rays
- B) Absorb X-rays
- C) Focus the X-ray beam
- D) Accelerate electrons
Answer: B) Absorb X-rays
42. In X-ray imaging, what is the role of the X-ray tube housing?
- A) Absorb X-rays
- B) Focus the X-ray beam
- C) Shield and contain radiation
- D) Accelerate electrons
Answer: C) Shield and contain radiation
43. Which X-ray imaging technique is commonly used to examine the gastrointestinal tract after the ingestion of a contrast agent?
- A) Radiography
- B) Fluoroscopy
- C) Mammography
- D) Positron Emission Tomography (PET)
Answer: B) Fluoroscopy
44. How does the use of a lead grid in radiography impact image quality?
- A) Increases image contrast
- B) Decreases image sharpness
- C) Enhances X-ray production
- D) Reduces exposure time
Answer: A) Increases image contrast
45. What is the primary function of the X-ray collimator in dental radiography?
- A) Absorb X-rays
- B) Focus the X-ray beam
- C) Generate X-ray photons
- D) Accelerate electrons
Answer: B) Focus the X-ray beam
46. What imaging modality often combines X-ray technology with computer processing to create detailed cross-sectional images?
- A) Fluoroscopy
- B) Magnetic Resonance Imaging (MRI)
- C) Computed Tomography (CT)
- D) Ultrasonography
Answer: C) Computed Tomography (CT)
47. In medical X-ray procedures, what does the term "mAs" represent?
- A) Millimeter of Aluminum
- B) Magnetic Absorption System
- C) Milliampere-seconds
- D) Megavolt Amperes
Answer: C) Milliampere-seconds
48. How does X-ray exposure affect photographic film in traditional radiography?
- A) It decreases film sensitivity.
- B) It has no impact on film.
- C) It reduces film density.
- D) It increases film contrast.
Answer: D) It increases film contrast.
49. What is the purpose of a radiographic grid in X-ray imaging?
- A) Increase patient comfort
- B) Enhance image resolution
- C) Improve X-ray tube stability
- D) Reduce scattered radiation
Answer: D) Reduce scattered radiation
50. Which imaging technique uses X-rays to visualize the urinary system after the injection of a contrast agent?
- A) Radiography
- B) Fluoroscopy
- C) Mammography
- D) Intravenous Urography (IVU)
Answer: D) Intravenous Urography (IVU)
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