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 determines whether a spark can be produced?






2. What is an electromagnet?






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






4. Identify the blueprint symbol for resistors.






5. What is a wire classification?






6. What is the purpose of a raceway?






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






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






9. What is a characteristic of a fixed resistor?






10. What is power?






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






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






13. How do you read resistor color codes?






14. What is the use of the electromagnet?






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






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






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






18. Which type of cell can be recharged?






19. How is capacitance determined?






20. What is the term used when a magnetic field produced by coil 1 created a current in coil 2?






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






22. What is another name for an inductor?






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






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






25. What is the measure of potential difference?






26. What does a first band of white mean?






27. What types of protective tapes are used?






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






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






30. What determines the resistance of a resistor?






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






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






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






34. What is the basic law of magnetic force?






35. What is resistance?






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






37. What does Ohm's Law represent?






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






39. What is capacitance in electrical terms?






40. What is a rigid metal conduit?






41. What is the fundamental property of insulators?






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






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






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






45. What must be large enough to carry the largest current likely to occur?






46. What does a third band of brown mean?






47. Why is the transformer important to AC electricity?

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






49. What is a switch that operates by electricity?






50. How do static charges distribute themselves?