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






2. What do transducers do in electrical terms?






3. Identify the blueprint symbol for capacitors.






4. To what measurement do the conductor mills refer?






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






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






7. How many kinds of poles do magnets have?






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






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






10. How is capacitance determined?






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






12. 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






13. What does a first band of white mean?






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






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






16. What does resistance produce?






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






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






19. What is a common form used in conductors?






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






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






22. What is power?






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






24. What is the unit of measurement of resistance?






25. What is the difference between AC and DC?






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






27. What is capacitance in electrical terms?






28. The thermocouple uses which method for creating potential energy?






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






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






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






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






33. When does a DC circuit oppose current flow?






34. What is the relationship between cells and batteries?






35. What is the use of the electromagnet?






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






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






38. What does Ohm's Law represent?






39. What is a wire classification?






40. What is true about a dry cell?






41. What does a third band of brown mean?






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






43. What is insulation resistance?






44. What is a characteristic of a fixed resistor?






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






46. How do you read resistor color codes?






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






48. What is a conductor?






49. What is a switch that operates by electricity?






50. What makes electrons flow?