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






2. An orbit in which a satellite orbits Earth at the same rate as Earth rotates and thus stays over the same place all the time






3. Horizontal






4. 10MHZ






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






6. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






7. Soft - ductile






8. Hard - strong






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






10. Area load piston/area of effort piston






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






12. Load/effort






13. 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






14. 100khz






15. Mass X gravity X height






16. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






17. Between 2000-35 -700km above the earth's surface.






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






19. The greater the sulphur the harder the rubber to stretch






20. Results from the changing anode and cathode regions over the entire surface






21. Good wear - case hardening. ball bearings






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






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






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






25. MA=VR






26. Rubbers






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






28. When upper die is dropped on bottom






29. Hard - brittle






30. Difference/original






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






32. These have weaker secondary bonds which allow the stretching






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






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






35. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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






37. Elongation of grain flow in direction of rolling






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






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






40. 1/2Xmass X velocity X velocity






41. 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






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






43. Better properties that would come from machining






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






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. 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.






47. Load/area






48. Soaked cast iron at 870c for long time then cooled slow






49. 1%<X<2% carbon. more cementite - used for files






50. AC to DC