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






2. 1GHZ






3. Better properties that would come from machining






4. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






5. 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






6. Area load piston/area of effort piston






7. Good wear - case hardening. ball bearings






8. 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






9. X<1% silicon no graphite - has carbon/carbide. very brittle






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






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






12. Usually used together - strengthening and toughness






13. 10MHZ






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






15. Area parallel to force






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






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






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






19. High pressure

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20. Vertical






21. Soft - ductile






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






23. Elongation of grain flow in direction of rolling






24. Good high temp wear - tools






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






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






27. These have weaker secondary bonds which allow the stretching






28. Load/effort






29. 1/2Xmass X velocity X velocity






30. 1/4 of the wavelength (higher better)






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






32. Hard - brittle






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






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






35. Horizontal






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






37. Good toughness and fatigue. high strength structures






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






39. 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






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






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. Load/area






43. AC to DC






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






45. When upper die is dropped on bottom






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






47. 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.






48. Ma/vr x 100/1






49. Difference/original






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