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Basic Electricity

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. What do junction boxes protect?






2. What is the difference between AC and DC?






3. Which type of cell can be recharged?






4. What is a rigid metal conduit?






5. What is another name for an inductor?






6. What is the basic law of magnetic force?






7. What are the two generic methods to eliminate static electricity from metal objects?






8. What is the relationship of conductor size and length to resistance?






9. What is produced when an alternator rotates 360 electrical degrees through a magnetic field?






10. What is a characteristic of a fixed resistor?






11. What does resistance produce?






12. Solve the equation: 35 volts / 0.70 amperes= ? ohms - to find resistance.






13. What is a characteristic of insulators?






14. Where does the thumb point in both Left-Hand Rules?






15. Given R=E / I and the following information - plug in the data and solve the problem for resistance. 1.5 volt walkman battery - 0.02 amps of current






16. What is dielectric strength?






17. Where do the fingers point in both Left-Hand Rules?






18. What is true about a dry cell?






19. What is the type of cable composed of many fine wires?






20. What is the use of the electromagnet?






21. How are the capacitors connected when the combined capacitance equals a sum of all the capacitors?






22. Identify the blueprint symbol for capacitors.






23. What does Ohm's Law represent?






24. Given E=I X R and the following information - plug in the data and solve the problem for voltage. 0.015 ohms - 800 amps of current






25. What do we call the process of replacement of vapor above a liquid with a nonflammable gas?






26. What is the term for doing work at the rate of joule per second?






27. What is needed for electric heating elements and the filaments of light bulbs?






28. What does static electricity do?






29. Identify the general blueprint symbol for inductors.






30. If the fourth color band is missing - this means the measured value of the resistance is what percent of the marked value?






31. What does a third band of brown mean?






32. What is the measure of potential difference?






33. What is insulation resistance?






34. What is a common measure of wire diameter?






35. What is a type of mechanical transducer?






36. What is an arrangement of materials that create a potential difference by chemistry?






37. What information do the Left-Hand Rules provide?






38. What do electrical charges need to cause a fire or explosion?






39. What is voltage?






40. What is an electromagnet?






41. How do static charges distribute themselves?






42. What is a conductor?






43. What is the purpose of resistors in electrical circuits?






44. What instrument measures voltage?






45. If the fourth color band is gold - this means the measured value of the resistance is what percent of the marked value?






46. What is a property of inductors in electrical circuits?






47. What types of protective tapes are used?






48. What is capacitance in electrical terms?






49. What do transducers do in electrical terms?






50. A resistor is color coded brown - green - orange. What is its resistance?







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