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






2. What is a wire classification?






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






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






5. How is capacitance determined?






6. Why is the transformer important to AC electricity?

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






8. What do junction boxes protect?






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






10. What is the measure of potential difference?






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






12. What does a third band of brown mean?






13. What does a transformer transform?






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






15. What determines the resistance of a resistor?






16. What determines whether a spark can be produced?






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






18. What is a characteristic of a fixed resistor?






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






20. What is a switch that operates by electricity?






21. What does a moving charge produce?






22. What is resistance?






23. What does resistance produce?






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






25. Identify the general blueprint symbol for inductors.






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






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






28. What is the unit of measurement of resistance?






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






30. What is the basic law of magnetic force?






31. How do you read resistor color codes?






32. What is true about a dry cell?






33. What is a common measure of wire diameter?






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






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






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






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






38. What is a DC circuit characteristic?






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






40. Identify the blueprint symbol for capacitors.






41. How do static charges distribute themselves?






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






43. What is resistance in electrical terms?






44. What is the relationship between cells and batteries?






45. What can permanently break down a capacitor?






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






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






48. 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






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






50. What is voltage?







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