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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. When upper die is dropped on bottom






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






3. Mass X gravity X height






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






5. MA=VR






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






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






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






9. 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






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






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






12. 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






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






14. Hard - brittle






15. 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






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






17. Produces; harder - stronger and less ductile product






18. Area parallel to force






19. Low pressure

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






21. 100khz






22. Good high temp wear - tools






23. AC to DC






24. Horizontal






25. Vertical






26. 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






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






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






29. 1/2Xmass X velocity X velocity






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






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






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






33. 1/4 of the wavelength (higher better)






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






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






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






37. Hard - strong






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






39. Elongation of grain flow in direction of rolling






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






41. These have weaker secondary bonds which allow the stretching






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






43. Good toughness and fatigue. high strength structures






44. High pressure

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45. 1GHZ






46. Rubbers






47. Ma/vr x 100/1






48. 100GHZ+






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






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