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






2. What is a DC circuit characteristic?






3. What is an electromagnet?






4. What does a third band of brown mean?






5. What does a transformer transform?






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






7. What do transducers do in electrical terms?






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






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






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






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






12. What is the purpose of a raceway?






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






14. What is a rigid metal conduit?






15. What do junction boxes protect?






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






17. What results when current is run through a material with high resistance?






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






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






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






21. What makes electrons flow?






22. Solve the equation: 35 volts / 0.70 amperes= ? ohms - to find resistance.






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






24. Identify the blueprint symbol for capacitors.






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






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






27. What is true about a dry cell?






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






29. What is induction?






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






31. What determines the resistance of a resistor?






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






33. What is a common measure of wire diameter?






34. What is a switch that operates by electricity?






35. What are the names of two of the six primary methods of producing a voltage?






36. What does a first band of white mean?






37. How do you read resistor color codes?






38. What does Ohm's Law represent?






39. Identify the general blueprint symbol for inductors.






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






41. How many kinds of poles do magnets have?






42. What does a moving charge produce?






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






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






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






46. What determines whether a spark can be produced?






47. What is the fundamental property of insulators?






48. 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






49. What is dielectric strength?






50. What is insulation resistance?