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 does Ohm's Law represent?






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






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






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






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






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






7. What is a DC circuit characteristic?






8. What is capacitance in electrical terms?






9. 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






10. What does resistance produce?






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






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






13. What determines the resistance of a resistor?






14. What is the use of the electromagnet?






15. What can permanently break down a capacitor?






16. What is another name for an inductor?






17. What is a characteristic of a fixed resistor?






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






19. What do junction boxes protect?






20. What is resistance in electrical terms?






21. Identify the blueprint symbol for capacitors.






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






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






24. What is true about a dry cell?






25. What is dielectric strength?






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






27. What do transducers do in electrical terms?






28. How is capacitance determined?






29. What is a type of mechanical transducer?






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






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






32. 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






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






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






35. What is resistance?






36. What is a switch that operates by electricity?






37. What does a first band of white mean?






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






39. What is a conductor?






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






41. What makes electrons flow?






42. What is the fundamental property of insulators?






43. Identify the general blueprint symbol for inductors.






44. Identify the blueprint symbol for resistors.






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






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






47. Which type of cell can be recharged?






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






49. How do you read resistor color codes?






50. What is a characteristic of insulators?