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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. MA=VR






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






3. 100khz






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






5. 1GHZ






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






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






8. Horizontal






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






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






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






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






13. AC to DC






14. Low pressure


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






16. Soft - ductile






17. 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.






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






19. Load/effort






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






21. 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.






22. 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






23. 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






24. Good high temp wear - tools






25. Ma/vr x 100/1






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






27. 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






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






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






30. A device that converts the AC inside a DC generator to a DC output or converts a DC supply to an AC inside a DC motor.keeping the armature rotating






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






32. 0.3%<X<0.6% carbon. mostly pear- lite - heat treatable. 0.4 used in axles






33. Resulting from exposure to damp environments and liquids.






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






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






36. 1/2Xmass X velocity X velocity






37. Hard - brittle






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






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






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






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






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






43. 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






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






45. Area parallel to force






46. High pressure


47. Usually used together - strengthening and toughness






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






49. Elongation of grain flow in direction of rolling






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