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 true about a dry cell?






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






3. What does Ohm's Law represent?






4. Identify the blueprint symbol for resistors.






5. What is insulation resistance?






6. What is a characteristic of insulators?






7. What is dielectric strength?






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






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






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






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






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






13. Which type of cell can be recharged?






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






15. What determines whether a spark can be produced?






16. How do static charges distribute themselves?






17. What determines the resistance of a resistor?






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






19. What is the term for two or more cells attached together?






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






21. What does a moving charge produce?






22. When does a DC circuit oppose current flow?






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






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






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






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






27. What is induction?






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






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






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






31. What is a common cause of static electricity in a shop?






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






33. What is an electromagnet?






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






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






36. What is a common measure of wire diameter?






37. Identify the general blueprint symbol for inductors.






38. How do you read resistor color codes?






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






40. What is a rigid metal conduit?






41. What is a DC circuit characteristic?






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






43. 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






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






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






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






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






48. Identify the blueprint symbol for capacitors.






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






50. What is resistance?