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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. Good wear - case hardening. ball bearings






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






3. 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.






4. 100khz






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






6. Soft - ductile






7. Rubbers






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






9. Load/area






10. Better properties that would come from machining






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






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






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






14. Difference/original






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






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






18. When upper die is dropped on bottom






19. 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






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






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






22. AC to DC






23. Elongation of grain flow in direction of rolling






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






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






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






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






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






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






30. Load/effort






31. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






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






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






34. Area load piston/area of effort piston






35. Ma/vr






36. MA=VR






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






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






39. 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






40. These have weaker secondary bonds which allow the stretching






41. Mass X gravity X height






42. Area parallel to force






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






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






45. Horizontal






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






47. 1GHZ






48. High pressure

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






50. 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