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. Where does the thumb point in both Left-Hand Rules?






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






4. What is a type of mechanical transducer?






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






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






7. What do junction boxes protect?






8. What determines whether a spark can be produced?






9. What is an electromagnet?






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






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






12. What does a moving charge produce?






13. What is the basic law of magnetic force?






14. Identify the general blueprint symbol for inductors.






15. What instrument measures voltage?






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






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






18. What is true about a dry cell?






19. What is a characteristic of insulators?






20. How do static charges distribute themselves?






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






22. What can permanently break down a capacitor?






23. What is induction?






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






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






26. What determines the resistance of a resistor?






27. What is voltage?






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






29. What does a first band of white mean?






30. To what measurement do the conductor mills refer?






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






32. What type of circuit has two or more paths for current to follow?






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






34. How many kinds of poles do magnets have?






35. What is a type of capacitor?






36. What is resistance?






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






38. What is the relationship between magnetism and electricity?






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






40. How do you read resistor color codes?






41. What is the fundamental property of insulators?






42. What is the unit of measurement of resistance?






43. What is a property of inductors in electrical circuits?






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






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






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






47. Identify the blueprint symbol for capacitors.






48. What does a transformer transform?






49. What does resistance produce?






50. Which type of cell can be recharged?