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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. 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






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






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






4. Ma/vr






5. Hard - brittle






6. High pressure

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7. Better properties that would come from machining






8. Good wear - case hardening. ball bearings






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






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






11. 100GHZ+






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






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






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






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






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






17. Usually used together - strengthening and toughness






18. Soft - ductile






19. MA=VR






20. When upper die is dropped on bottom






21. These have weaker secondary bonds which allow the stretching






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






23. 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






24. 10MHZ






25. 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.






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






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






28. 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






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






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






31. Good toughness and fatigue. high strength structures






32. Ma/vr x 100/1






33. Rubbers






34. 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






35. Low pressure

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36. 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






37. Load/area






38. Vertical






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






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






41. Area load piston/area of effort piston






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






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






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






45. Produces; harder - stronger and less ductile product






46. Area parallel to force






47. Horizontal






48. A method of transmitting signals by changing the amplitude of a waves






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






50. AC to DC