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 do transducers do in electrical terms?






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






3. What can permanently break down a capacitor?






4. What is a common measure of wire diameter?






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






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






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






8. What is a switch that operates by electricity?






9. What is a characteristic of a fixed resistor?






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






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






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






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






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






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






16. What determines whether a spark can be produced?






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






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






19. What is the relationship between cells and batteries?






20. What do junction boxes protect?






21. What does a moving charge produce?






22. What does Ohm's Law represent?






23. What is an electromagnet?






24. What is another name for an inductor?






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






26. Identify the blueprint symbol for resistors.






27. What is dielectric strength?






28. What is a way to classify wires and cables?






29. What does a first band of white mean?






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






31. What is the use of the electromagnet?






32. What is a conductor?






33. What is resistance?






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






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






36. What types of protective tapes are used?






37. Identify the general blueprint symbol for inductors.






38. What is a wire classification?






39. What is 'difference in potential(potential difference) - per unit of charge - between two points'?






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






41. What does a transformer transform?






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






43. What is resistance in electrical terms?






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






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






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






47. Why is the transformer important to AC electricity?

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48. What is the term for doing work at the rate of joule per second?






49. What determines the resistance of a resistor?






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