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 type of circuit has one path of follow through a load?






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






3. What does a transformer transform?






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






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






6. How do static charges distribute themselves?






7. What does a first band of white mean?






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






9. What is the use of the electromagnet?






10. What is a conductor?






11. How many kinds of poles do magnets have?






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






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






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






15. What do junction boxes protect?






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






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






18. How do you read resistor color codes?






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






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






21. What types of protective tapes are used?






22. What is a common form used in conductors?






23. What is capacitance in electrical terms?






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






25. Identify the blueprint symbol for capacitors.






26. Which type of cell can be recharged?






27. What information do the Left-Hand Rules provide?






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






29. 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






30. What is another name for an inductor?






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






32. What is a type of capacitor?






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






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






35. What is voltage?






36. What is dielectric strength?






37. What is the measure of potential difference?






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






39. 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






40. What can permanently break down a capacitor?






41. What is the fundamental property of insulators?






42. Which of the following materials is NOT a good conductor?






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






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






45. What is a DC circuit characteristic?






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






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






48. What is an electromagnet?






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






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