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 the difference between AC and DC?






2. Identify the blueprint symbol for resistors.






3. What types of protective tapes are used?






4. What do transducers do in electrical terms?






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






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






7. What is induction?






8. Why is the transformer important to AC electricity?






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






10. The generator is what method of creating potential energy?






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






12. When does a DC circuit oppose current flow?






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






14. What does resistance produce?






15. What makes electrons flow?






16. What do junction boxes protect?






17. What is the unit of measurement of resistance?






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






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






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






21. What is the fundamental property of insulators?






22. What determines the resistance of a resistor?






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






24. What is a common form used in conductors?






25. How many kinds of poles do magnets have?






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






27. What is the measure of potential difference?






28. What is the relationship between cells and batteries?






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






30. What does static electricity do?






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






32. What is the use of the electromagnet?






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






34. What is capacitance in electrical terms?






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






36. What is insulation resistance?






37. 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






38. Identify the blueprint symbol for capacitors.






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






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






41. Where do the fingers point in both Left-Hand Rules?






42. What is a characteristic of insulators?






43. What does a moving charge produce?






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






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






46. What is power?






47. What is a rigid metal conduit?






48. What is the purpose of a raceway?






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






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