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






2. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






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






4. 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






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






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






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






8. Hard - strong






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






10. 1/4 of the wavelength (higher better)






11. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






12. 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






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






14. 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






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






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






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






18. Horizontal






19. Vertical






20. 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






21. When upper die is dropped on bottom






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






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






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






25. Produces; harder - stronger and less ductile product






26. Hard - brittle






27. Good toughness and fatigue. high strength structures






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






29. Usually used together - strengthening and toughness






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






31. Mass X gravity X height






32. High pressure

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33. 100khz






34. Better properties that would come from machining






35. Resulting from exposure to damp environments and liquids.






36. 10MHZ






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






38. Ma/vr x 100/1






39. Soft - ductile






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






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






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






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






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






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






46. Elongation of grain flow in direction of rolling






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






48. AC to DC






49. 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.






50. Difference/original