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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 true about a dry cell?






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






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






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






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






6. Which type of cell can be recharged?






7. What does Ohm's Law represent?






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






9. What is a switch that operates by electricity?






10. Why is the transformer important to AC electricity?

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11. What is induction?






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






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






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






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






16. What is a DC circuit characteristic?






17. What makes electrons flow?






18. What is voltage?






19. What is the fundamental property of insulators?






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






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






22. What makes electrons flow?






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






24. What does a moving charge produce?






25. To what measurement do the conductor mills refer?






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






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






28. How do you read resistor color codes?






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






30. What do junction boxes protect?






31. What is insulation resistance?






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






33. What is resistance in electrical terms?






34. What is resistance?






35. What is a common form used in conductors?






36. Identify the general blueprint symbol for inductors.






37. What is capacitance in electrical terms?






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






39. When does a DC circuit oppose current flow?






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






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






42. What is power?






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






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






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






46. What determines the resistance of a resistor?






47. Identify the blueprint symbol for resistors.






48. How do static charges distribute themselves?






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






50. What do transducers do in electrical terms?







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