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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. Rubbers






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






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






4. 10MHZ






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






6. Good toughness and fatigue. high strength structures






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






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






9. High pressure

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10. Area load piston/area of effort piston






11. 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






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






13. Load/area






14. Load/effort






15. Good wear - case hardening. ball bearings






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






17. Difference/original






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






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






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






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






22. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






23. 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






24. 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






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






26. 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.






27. 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.






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






29. 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






30. Area parallel to force






31. 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 Fluorescent light is turned on to expose any left over - I.e in the cracks






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






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






34. 1/2Xmass X velocity X velocity






35. 1GHZ






36. Ma/vr x 100/1






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






38. Hard - brittle






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






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






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






42. When upper die is dropped on bottom






43. 1/4 of the wavelength (higher better)






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






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






46. Elongation of grain flow in direction of rolling






47. Resulting from exposure to damp environments and liquids.






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






49. 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






50. An orbit less than 1 -500 km. above the Earth's surface.







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