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






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






3. What is the basic law of magnetic force?






4. What is voltage?






5. What is the relationship between magnetism and electricity?






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






7. What is a switch that operates by electricity?






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






9. What does static electricity do?






10. What is the unit of measurement of electrical current?






11. What is a common measure of wire diameter?






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






13. What makes electrons flow?






14. Which type of cell can be recharged?






15. How many kinds of poles do magnets have?






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






17. Identify the blueprint symbol for resistors.






18. Why is the transformer important to AC electricity?






19. Identify the blueprint symbol for capacitors.






20. What is another name for an inductor?






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






22. What types of protective tapes are used?






23. What is the purpose of a raceway?






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






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






26. What does a third band of brown mean?






27. What is resistance in electrical terms?






28. What is true about a dry cell?






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






30. What is a wire classification?






31. How is capacitance determined?






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






33. 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






34. What is a DC circuit characteristic?






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






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






37. What does resistance produce?






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






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






40. What is the use of the electromagnet?






41. What is the fundamental property of insulators?






42. What do transducers do in electrical terms?






43. What is a common form used in conductors?






44. What determines whether a spark can be produced?






45. What is a characteristic of a fixed resistor?






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






47. What can permanently break down a capacitor?






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






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






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