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 insulation resistance?






2. What is another name for an inductor?






3. What does a transformer transform?






4. What is the unit of measurement of resistance?






5. To what measurement do the conductor mills refer?






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






7. What does resistance produce?






8. What is resistance?






9. What is a rigid metal conduit?






10. What is a type of capacitor?






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






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






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






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






15. What do junction boxes protect?






16. What is the difference between AC and DC?






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






18. What is a switch that operates by electricity?






19. 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






20. What does a first band of white mean?






21. How do static charges distribute themselves?






22. What is power?






23. What is true about a dry cell?






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






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






26. Why is the transformer important to AC electricity?

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27. How is capacitance determined?






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






29. What types of protective tapes are used?






30. Identify the blueprint symbol for resistors.






31. How many kinds of poles do magnets have?






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






33. What does Ohm's Law represent?






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






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






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






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






38. What is capacitance in electrical terms?






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






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






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






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






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






44. What is the use of the electromagnet?






45. What is resistance in electrical terms?






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






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






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






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






50. What does a moving charge produce?