Test your basic knowledge |

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. 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.






2. Ma/vr






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






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






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






6. Usually used together - strengthening and toughness






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






8. 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






9. High pressure

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10. Hard - strong






11. 100GHZ+






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






13. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






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






15. Better properties that would come from machining






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






17. Rubbers






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






19. Produces; harder - stronger and less ductile product






20. Area parallel to force






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






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






23. 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.






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






25. Good toughness and fatigue. high strength structures






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






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






28. 1/4 of the wavelength (higher better)






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






30. Load/effort






31. Resulting from exposure to damp environments and liquids.






32. 10MHZ






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






34. Vertical






35. 1%<X<2% carbon. more cementite - used for files






36. 1GHZ






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






38. 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






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






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






41. 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






42. Elongation of grain flow in direction of rolling






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






44. Good wear - case hardening. ball bearings






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






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






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






48. MA=VR






49. Good high temp wear - tools






50. 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