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 types of protective tapes are used?






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






3. What is the difference between AC and DC?






4. 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






5. What is voltage?






6. What is a wire classification?






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






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






9. What is induction?






10. What is a switch that operates by electricity?






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






12. What does Ohm's Law represent?






13. What is the relationship between cells and batteries?






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






15. What is another name for an inductor?






16. What does a transformer transform?






17. What is the fundamental property of insulators?






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






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






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






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






22. What is a characteristic of a fixed resistor?






23. When does a DC circuit oppose current flow?






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






25. What is a conductor?






26. What determines the resistance of a resistor?






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






28. What instrument measures voltage?






29. Why is the transformer important to AC electricity?






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






31. Identify the general blueprint symbol for inductors.






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






33. How do you read resistor color codes?






34. What does a third band of brown mean?






35. What is power?






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






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






38. What does static electricity do?






39. What do transducers do in electrical terms?






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






41. What is a rigid metal conduit?






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






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






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






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






46. What is the relationship of conductor size and length to resistance?






47. What is the use of the electromagnet?






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






49. What makes electrons flow?






50. What is the unit of measurement of resistance?