Test your basic knowledge |

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 wire measurement is commonly used in the U.S.?






2. How many kinds of poles do magnets have?






3. What does Ohm's Law represent?






4. What types of protective tapes are used?






5. What is capacitance in electrical terms?






6. What are the common units of measurement for round and square conductor cross - sections?






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






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






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






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






11. What is a conductor?






12. What is a way to classify wires and cables?






13. How do static charges distribute themselves?






14. What type of circuit has two or more paths for current to follow?






15. What do transducers do in electrical terms?






16. 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






17. What is the relationship between magnetism and electricity?






18. What is the unit of measurement of electrical current?






19. What does static electricity do?






20. What is the measure of potential difference?






21. What is the purpose of capacitors in electrical circuits?






22. What is the difference between AC and DC?






23. Which of the following is a type of resistor?






24. The generator is what method of creating potential energy?






25. Which type of cell can be recharged?






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






27. What is true about a dry cell?






28. When does a DC circuit oppose current flow?






29. What is a common form used in conductors?






30. 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






31. Why is the transformer important to AC electricity?

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32. Identify the general blueprint symbol for inductors.






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






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






35. When reading resistance color codes - what does the fourth band indicate?






36. What does a first band of white mean?






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






38. What is voltage?






39. What determines whether a spark can be produced?






40. What is an electromagnet?






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






42. Which material has the lowest resistance at ordinary temperatures?






43. Which of the following materials is NOT a good conductor?






44. To what measurement do the conductor mills refer?






45. What do we call the ability to do work?






46. What is induction?






47. What does an object have if a magnetic field acts on it?






48. How is capacitance determined?






49. What is a rigid metal conduit?






50. What determines the resistance of a resistor?