Vehicle armour - Quiz
Vehicle armour
  • 1. What happens to ceramic material when a HEAT round penetrates it?
A) It melts
B) It expands
C) It turns into liquid
D) It shatters
  • 2. What is the primary function of the ceramic fragments during a HEAT attack?
A) Destroying the geometry of the metal jet
B) Absorbing the sound waves
C) Cooling the projectile
D) Creating a magnetic field
  • 3. When was the precise mechanism for ceramic defeating HEAT uncovered?
A) The 1940s
B) The 1980s
C) The 1990s
D) The 1960s
  • 4. Besides HEAT protection, what is another benefit of high-hardness ceramic?
A) Disrupting and spreading kinetic energy of projectiles
B) Reducing the weight of the engine
C) Improving radio reception
D) Increasing vehicle speed
  • 5. What materials are most commonly used in composite armour?
A) Rubber and copper
B) Iron and glass
C) Steel and ceramics
D) Aluminum and plastic
  • 6. When was composite armour initially developed?
A) The 1920s
B) The 1980s
C) The 1960s
D) The 1940s
  • 7. What is NERA an abbreviation for in the context of armour?
A) New energy resistant armour
B) Non-elemental reactive alloy
C) Non-explosive reactive armour
D) Negative energy reaction assembly
  • 8. What is typically found between the hard plates of a NERA element?
A) Low density interlayer material
B) Explosive compound
C) Pressurized gas
D) High density lead
  • 9. What happens to the interlayer in NERA upon impact?
A) It turns to vapor
B) It swells and moves the plates
C) It absorbs the entire projectile
D) It hardens instantly
  • 10. What material was used in the 'Kvartz' filler of some T-72 models?
A) Ceramic
B) Uranium
C) Glass
D) Steel
  • 11. Which material was used in the T-64 turret alongside ceramic balls?
A) Copper
B) Aluminium
C) Rubber
D) Lead
  • 12. What is 'textolite' as mentioned in the text?
A) A fibreglass reinforced polymer
B) A reactive explosive
C) A type of high hardness steel
D) A uranium alloy
  • 13. Where is belt armour typically located on a warship?
A) Under the keel
B) Inside the engine room
C) Outside the hull
D) On the radar mast
  • 14. What is the purpose of a torpedo bulkhead placed behind the main belt?
A) Improve steering
B) Store ammunition
C) Maintain watertight integrity
D) Increase speed
  • 15. Why would belt armour be fitted at an inclined angle?
A) To improve protection
B) To increase deck space
C) To assist with docking
D) To save fuel
  • 16. What is an additional benefit of the air-space between the belt and the hull?
A) It stabilizes the cannons
B) It adds buoyancy
C) It cools the hull
D) It hides the ship from radar
  • 17. On early aircraft carriers, where was the deck armour located?
A) Flight deck
B) Waterline level
C) The rudder
D) Hangar deck
  • 18. Which material is often researched to decrease the weight of armour?
A) Concrete blocks
B) Nanomaterials
C) Solid granite
D) Thick lead plating
  • 19. What is used to protect jet engines from breaking turbine blades?
A) Aramid composite kevlar bandages.
B) Thick rubber mats.
C) Wooden shielding.
D) Steel chains.
  • 20. What material was used on historical ironclad warships?
A) Carbon fiber.
B) Modern titanium alloys.
C) Wrought iron.
D) Polycarbonate.
  • 21. What threat does spacecraft armour protect against?
A) Radio interference.
B) Extreme gravity.
C) Micrometeoroids.
D) Enemy missiles.
  • 22. Which aircraft features a bathtub-shaped titanium enclosure for the pilot?
A) Cessna 172.
B) A-10 Thunderbolt II.
C) Boeing 747.
D) Space Shuttle.
  • 23. What happens if a vehicle carries excessive amounts of armour?
A) Mobility is restricted.
B) The vehicle becomes invisible.
C) The engine becomes silent.
D) Fuel consumption decreases.
  • 24. What is the main advantage of using titanium for military aviation?
A) It is easy to weld.
B) High specific strength.
C) It is naturally bullet-repellent.
D) It is the cheapest metal.
  • 25. Why is cast steel armour considered softer than rolled steel?
A) Heat treatment is difficult or impossible.
B) It is mixed with plastic.
C) It contains high levels of lead.
D) It is cooled too quickly.
  • 26. For what type of vessels was plastic metal armour originally developed in 1940?
A) Main battle tanks
B) Merchant ships
C) Aircraft carriers
D) Submarines
  • 27. What percentage of granite was used in the original plastic armour composition?
A) 50%
B) 7%
C) 25%
D) 43%
  • 28. What was the bitumen content in the original plastic armour?
A) 7%
B) 10%
C) 43%
D) 50%
  • 29. What component of plastic armour is responsible for deflecting bullets?
A) The wooden form
B) The steel backing plate
C) The bitumen layer
D) Hard granite particles
  • 30. What material is used in the BDD appliqué armour on T-62 and T-55 tanks?
A) Aluminium oxynitride
B) Polyurethane
C) Granite
D) Limestone
  • 31. Which material is used in bullet-resistant glass to provide impact-resistance against tools like axes?
A) Polycarbonate
B) Granite
C) Bitumen
D) Steel
  • 32. What is the typical thickness of polycarbonate-based bullet-resistant glass?
A) 70–75 mm
B) 100–120 mm
C) 0.5 inches
D) 2 inches
  • 33. What material is used to bond laminated glass layers together?
A) Bitumen
B) Granite
C) Limestone
D) Polyvinyl butyral
  • 34. What is the typical thickness of laminated glass used on combat vehicles?
A) 100–120 mm
B) 70–75 mm
C) 50 mm
D) 200 mm
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