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. Identify the general blueprint symbol for inductors.






2. What is an electromagnet?






3. What does a moving charge produce?






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






5. What is capacitance in electrical terms?






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






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






8. What is another name for an inductor?






9. What is a common cause of static electricity in a shop?






10. What is a DC circuit characteristic?






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






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






13. What makes electrons flow?






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






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






16. How is the heat production measured in a resistor?






17. Why is the transformer important to AC electricity?






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






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






20. Which type of cell can be recharged?






21. What is a common measure of wire diameter?






22. What is a conductor?






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






24. What is the unit of measurement of resistance?






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






26. How is capacitance determined?






27. What is a characteristic of a fixed resistor?






28. What is power?






29. What do junction boxes protect?






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






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






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






33. What does a transformer transform?






34. What is dielectric strength?






35. The dry cell is what method for creating potential energy?






36. What is a switch that operates by electricity?






37. Which way is the current going in the circuit shown?(electron flow)






38. What instrument measures voltage?






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






40. What can permanently break down a capacitor?






41. What does a third band of brown mean?






42. What is the unit of measurement of potential difference?






43. What is a common form used in conductors?






44. How do static charges distribute themselves?






45. What is true about a dry cell?






46. How do you read resistor color codes?






47. What is voltage?






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






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






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