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






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






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






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






5. 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






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






7. When upper die is dropped on bottom






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






9. High pressure

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10. Good toughness and fatigue. high strength structures






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






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. AC to DC






14. These have weaker secondary bonds which allow the stretching






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






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






17. Hard - brittle






18. Vertical






19. Area load piston/area of effort piston






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






21. Usually used together - strengthening and toughness






22. 1%<X<2% carbon. more cementite - used for files






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






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






25. Mass X gravity X height






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






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






28. Hard - strong






29. Load/effort






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






31. A cable made of optical fibers that can transmit large amounts of information at the speed of light






32. Better properties that would come from machining






33. 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.






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






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






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






37. 1/4 of the wavelength (higher better)






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






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






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






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






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






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






44. Elongation of grain flow in direction of rolling






45. 100khz






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






47. Produces; harder - stronger and less ductile product






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






49. Good high temp wear - tools






50. Rubbers