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Engineering Studies

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Allows for another signal to be sent along the carrier signal






2. Hard - strong






3. Area load piston/area of effort piston






4. Produces; harder - stronger and less ductile product






5. Us a metal that is more reactive. It is connect to another metal and corrodes instead of the other metal. the Anode is replaced periodically






6. Degradation of a signal as it travels over a cable. Attenuation increased with higher frequencies






7. Based on the principle that magnetic materials will have distorted magnetic fields in the vicinity of material defects






8. Squeezing of the hot metal between two shaped dies excess is cut off






9. Good high temp wear - tools






10. Steel reinforcing rusts - rust has a greater volume concrete then breaks of as a result.






11. Used where scarifical anodes cannot supply enough protection - offshore oil rigs - buried pipes - big things. protection is provided by connecting a rectifier to provide a direct current source between the anode and the metal being protected.






12. Maximum bending moments X distance to natural axis/ second moment of area






13. Good toughness and fatigue. high strength structures






14. Use of xrays passed through the material to make a visual record of internal structures on specially sensitized film






15. Load/area






16. 100GHZ+






17. Involves heating the piece above Red heat and then letting it cool in air. causes smaller grains






18. 1%<X<2% carbon. more cementite - used for files






19. Elongation of grain flow in direction of rolling






20. Occurs when the metal is hammered by a vertically moving tool onto a stationary tool






21. x<0.15% carbon. ferrite. good for cold working - rolling sheets






22. Mass X gravity X height






23. Horizontal






24. When upper die is dropped on bottom






25. Ma/vr






26. Usually used together - strengthening and toughness






27. Rubbers






28. Can only be softened once - bonded strongly - generally stronger that thermoplastics. stronger secondary bonds






29. Difference/original






30. Being forced - under pressure - through a hole like toothpaste. either hot or cold






31. A strong hard building material composed of sand and gravel and cement and water






32. Glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering






33. Field winding parallel to armature winding. Bad for direct coupling






34. Better properties that would come from machining






35. Softening a material such as metal by controlled heating and cooling. This makes the metal less brittle and more easily adaptable. Soaking till austenite then cooling slowly. large grains






36. Hard - brittle






37. A flexible communications cable that contains pairs of insulated copper wires that are twisted together for reduction of EMI and RFI and covered with an outer insulating jacket.






38. Controlled cooling after heating metal to attain a degree of hardness. removes internal stresses






39. Resulting from exposure to damp environments and liquids.






40. Forming of metal by compressive force above recrystallization point.






41. 10MHZ






42. High pressure

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43. Sound waves sent through a material - much like sonar. Internal defects appear because they use more energy to go through it.






44. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






45. A motor that is light - rugged and very reliable - runs on ac current and are more common in robotics. Can only run at a certain speed






46. Soft - ductile






47. MA=VR






48. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






49. A device that converts the AC inside a DC generator to a DC output or converts a DC supply to an AC inside a DC motor.keeping the armature rotating






50. Good wear - case hardening. ball bearings