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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. AC to DC






2. Soft - ductile






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






4. 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






5. Area parallel to force






6. Good wear - case hardening. ball bearings






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






8. 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






9. Rubbers






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






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






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






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






14. Hard - strong






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






16. 100khz






17. Ma/vr x 100/1






18. 0.6%<X<1% carbon. almost entirely pearlite with cementite x>0.8% for high strength and wear






19. MA=VR






20. Good high temp wear - tools






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






22. Load/area






23. 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.






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






25. Between 2000-35 -700km above the earth's surface.






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






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






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






29. Usually used together - strengthening and toughness






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






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






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






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






34. 1%<X<2% carbon. more cementite - used for files






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






36. Good toughness and fatigue. high strength structures






37. 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






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






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






40. Difference/original






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






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






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






44. 10MHZ






45. 0.15%<X<0.3% carbon. more pearlite - most common steel. weldable up to 0.2 used in structures






46. Load/effort






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






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






49. Produces; harder - stronger and less ductile product






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