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






2. Identify the blueprint symbol for resistors.






3. What is the relationship between cells and batteries?






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






5. What instrument measures voltage?






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






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






8. What is a common form used in conductors?






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






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






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






12. What is another name for an inductor?






13. What can permanently break down a capacitor?






14. What is the difference between AC and DC?






15. The thermocouple uses which method for creating potential energy?






16. What is a wire classification?






17. What is the unit of measurement of resistance?






18. What does a first band of white mean?






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






20. What is a conductor?






21. What is the purpose of a raceway?






22. What is a type of mechanical transducer?






23. How are the capacitors connected when the combined capacitance equals less than the lowest- value capacitor?






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






25. To what measurement do the conductor mills refer?






26. What is an electromagnet?






27. 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






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






29. How do you read resistor color codes?






30. What is induction?






31. What is the relationship between magnetism and electricity?






32. What is a switch that operates by electricity?






33. What is voltage?






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






35. What is dielectric strength?






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






37. What is the measure of potential difference?






38. What is true about a dry cell?






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






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






41. Why is the transformer important to AC electricity?

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42. What is insulation resistance?






43. What does a third band of brown mean?






44. What is 'difference in potential(potential difference) - per unit of charge - between two points'?






45. What do transducers do in electrical terms?






46. How many kinds of poles do magnets have?






47. When does a DC circuit oppose current flow?






48. What is a characteristic of a fixed resistor?






49. What does resistance produce?






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