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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. 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.






2. Difference/original






3. Resulting from combined effect of stresses set up within the metal






4. Ma/vr x 100/1






5. Dye is sprayed onto a surface - with excess being wiped away - meaning any left on the piece would be in cracks that exist in it. A developer is then added to it to expose any left over - I.e in the cracks






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






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






8. Resulting from exposure to oxygen in the atmosphere - chemical fumes - steam - flue gas. creates a layer of metal oxide.






9. The quantity of information that can be transmitted through a communication medium in a given amount of time.






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






11. Hard - brittle






12. Elongation of grain flow in direction of rolling






13. Load/effort






14. Soft - ductile






15. Rubbers






16. Allows for another signal to be sent along the carrier signal






17. High pressure

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18. Small amounts of magnesium to make spheres instead of flakes. thus no stress concentrations






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






20. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






21. A method of transmitting signals by changing the frequency of a wave






22. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






23. Supply current to the rotating commutator from an external source






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






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






26. When upper die is dropped on bottom






27. Usually used together - strengthening and toughness






28. 10MHZ






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






30. Can be reflected of the ionosphere - 3 to 30 megahertz






31. Mass X gravity X height






32. 100GHZ+






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






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






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






36. 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






37. 1%<X<2% carbon. more cementite - used for files






38. 1/2Xmass X velocity X velocity






39. Solid at room temp - weak secondary bonds. can be reheated multiply times.






40. Glass that is strengthened by introducing stress through rapid heating and cooling of the glass surfaces






41. Majority silicon X>1.5% for graphite. Graphite in flakes that cause stress points






42. Makes brittle by heating and then cooling quickly - less flexible. Red Heat then quenching






43. 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






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






45. Good toughness and fatigue. high strength structures






46. Load/area






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






48. Vertical






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






50. Low pressure

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