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 is a conductor?






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






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






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






5. What is the purpose of a raceway?






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






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






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






9. Identify the general blueprint symbol for inductors.






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






11. What is the difference between AC and DC?






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






13. Which type of cell can be recharged?






14. What determines the resistance of a resistor?






15. What is a type of mechanical transducer?






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






17. What is power?






18. What makes electrons flow?






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






20. What is a switch that operates by electricity?






21. What is capacitance in electrical terms?






22. What is a characteristic of insulators?






23. A resistor is color coded brown - green - orange. What is its resistance?






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






25. What does a third band of brown mean?






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






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






28. What is the use of the electromagnet?






29. What types of protective tapes are used?






30. What is another name for an inductor?






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






32. What is resistance?






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






34. Identify the blueprint symbol for capacitors.






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






36. How do static charges distribute themselves?






37. Identify the blueprint symbol for resistors.






38. What is the relationship between cells and batteries?






39. What does Ohm's Law represent?






40. What makes electrons flow?






41. What does a first band of white mean?






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






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






44. To what measurement do the conductor mills refer?






45. What is a wire classification?






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






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






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






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






50. What is voltage?