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






2. 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






3. Better properties that would come from machining






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






5. When upper die is dropped on bottom






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






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






8. 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






9. 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 Fluorescent light is turned on to expose any left over - I.e in the cracks






10. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






11. 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






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






13. 1/2Xmass X velocity X velocity






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






15. Hard - brittle






16. Resulting from exposure to damp environments and liquids.






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






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






19. Area load piston/area of effort piston






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






21. Ma/vr






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






23. Low pressure

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24. Mass X gravity X height






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






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






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






28. These have weaker secondary bonds which allow the stretching






29. Good toughness and fatigue. high strength structures






30. Good wear - case hardening. ball bearings






31. Elongation of grain flow in direction of rolling






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






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






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






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






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






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






38. 100khz






39. High pressure

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






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






42. 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






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






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






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






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






47. Ma/vr x 100/1






48. 1/4 of the wavelength (higher better)






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






50. 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.