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






2. What does Ohm's Law represent?






3. What does static electricity do?






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






5. What is insulation resistance?






6. What does a third band of brown mean?






7. What does a moving charge produce?






8. What is the relationship between cells and batteries?






9. What is capacitance in electrical terms?






10. 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






11. What cannot be transformed to higher or lower potential differences?






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






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






14. What is an electromagnet?






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






16. What is the use of the electromagnet?






17. What is the name for electrical resistance of insulation?






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






19. What is the measure of potential difference?






20. What type of circuit has one path of follow through a load?






21. What is the basic law of magnetic force?






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






23. When does a DC circuit oppose current flow?






24. What determines the resistance of a resistor?






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






26. How is capacitance determined?






27. To what measurement do the conductor mills refer?






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






29. What is another name for an inductor?






30. What is power?






31. What do transducers do in electrical terms?






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






33. What is dielectric strength?






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






35. In most applications - what remains constant if the current remains constant and flows in one direction?






36. How many kinds of poles do magnets have?






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






38. What is a characteristic of insulators?






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






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






41. What is a conductor?






42. What makes electrons flow?






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






44. What does a first band of white mean?






45. What makes electrons flow?






46. What is a wire classification?






47. 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






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






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






50. What instrument measures voltage?