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






2. A solid state component made from three layers of semiconductor material that can amplify the strenght of an electric signal or act as an electronic switch






3. Better properties that would come from machining






4. Difference/original






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






6. 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






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






8. Rubbers






9. Load/effort






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






11. Soft - ductile






12. 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






13. 1GHZ






14. 1%<X<2% carbon. more cementite - used for files






15. Vertical






16. Area parallel to force






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






18. Hard - strong






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






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






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






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






23. 100khz






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






25. Good toughness and fatigue. high strength structures






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






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






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






29. These have weaker secondary bonds which allow the stretching






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






31. Horizontal






32. Ma/vr






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






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






35. 1/2Xmass X velocity X velocity






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






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






38. Resulting from exposure to damp environments and liquids.






39. Low pressure

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40. MA=VR






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






42. 100GHZ+






43. Good wear - case hardening. ball bearings






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






45. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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






47. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






48. Hard - brittle






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






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