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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. Soft - ductile






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






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






4. Hard - strong






5. Resulting from exposure to damp environments and liquids.






6. Rubbers






7. Load/area






8. 100GHZ+






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






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






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






12. 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.






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






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






15. 1/4 of the wavelength (higher better)






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






17. MA=VR






18. These have weaker secondary bonds which allow the stretching






19. Ma/vr






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






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






22. Hard - brittle






23. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






24. Mass X gravity X height






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






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






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






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






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






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






31. Horizontal






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






33. 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






34. 1%<X<2% carbon. more cementite - used for files






35. Area load piston/area of effort piston






36. 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






37. AC to DC






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






39. 1GHZ






40. Better properties that would come from machining






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






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






43. 100khz






44. Produces; harder - stronger and less ductile product






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






46. Area parallel to force






47. 1/2Xmass X velocity X velocity






48. Elongation of grain flow in direction of rolling






49. Load/effort






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







Sorry!:) No result found.

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