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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 does a third band of brown mean?






2. What is the measure of potential difference?






3. What is the type of cable composed of many fine wires?






4. What determines the resistance of a resistor?






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






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






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






8. What is a common measure of wire diameter?






9. How do you read resistor color codes?






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






11. What is a characteristic of a fixed resistor?






12. Where does the thumb point in both Left-Hand Rules?






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






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






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






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






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






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






19. What do junction boxes protect?






20. To what measurement do the conductor mills refer?






21. What does resistance produce?






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






23. What is an electromagnet?






24. What is power?






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






26. How do static charges distribute themselves?






27. Which type of cell can be recharged?






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






29. What is true about a dry cell?






30. 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






31. What is resistance in electrical terms?






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






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






34. 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






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






36. What is the fundamental property of insulators?






37. What is the basic law of magnetic force?






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






39. What is a switch that operates by electricity?






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






41. What is a characteristic of insulators?






42. How many kinds of poles do magnets have?






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






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






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






46. What is another name for an inductor?






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






48. What does a transformer transform?






49. What does static electricity do?






50. What determines whether a spark can be produced?






Can you answer 50 questions in 15 minutes?



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