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






2. What is a conductor?






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






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






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






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






7. What determines whether a spark can be produced?






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






9. What is true about a dry cell?






10. What do we call the process of replacement of vapor above a liquid with a nonflammable gas?






11. 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






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






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






14. What does static electricity do?






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






16. Identify the general blueprint symbol for inductors.






17. What is the unit of measurement of resistance?






18. Identify the blueprint symbol for resistors.






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






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






21. What is the unit of measurement of potential difference?






22. What does a third band of brown mean?






23. How many kinds of poles do magnets have?






24. Which material has the lowest resistance at ordinary temperatures?






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






26. What is a DC circuit characteristic?






27. What is voltage?






28. What do junction boxes protect?






29. What is the purpose of a raceway?






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






31. What is the relationship between cells and batteries?






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






33. What is an electromagnet?






34. What is the basic law of magnetic force?






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






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






37. What types of protective tapes are used?






38. What is a common measure of wire diameter?






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






40. Identify the blueprint symbol for capacitors.






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






42. What instrument measures voltage?






43. What makes electrons flow?






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






45. How do you read resistor color codes?






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






47. What is a characteristic of insulators?






48. What is a wire classification?






49. What is dielectric strength?






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






Can you answer 50 questions in 15 minutes?



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