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 purpose of resistors in electrical circuits?






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






3. What is an electromagnet?






4. What instrument measures voltage?






5. What is capacitance in electrical terms?






6. To what measurement do the conductor mills refer?






7. What is the name for electrical resistance of insulation?






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






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






10. A resistor is color coded brown - green - orange. What is its resistance?






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






12. What does static electricity do?






13. How many kinds of poles do magnets have?






14. What is dielectric strength?






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






16. How is capacitance determined?






17. What is a characteristic of a fixed resistor?






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






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






20. 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






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






22. How do static charges distribute themselves?






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






24. What is a common measure of wire diameter?






25. What determines whether a spark can be produced?






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






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






28. What is voltage?






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






30. What is induction?






31. Identify the blueprint symbol for resistors.






32. What is a DC circuit characteristic?






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






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






35. What is the fundamental property of insulators?






36. What is a characteristic of insulators?






37. What is a type of mechanical transducer?






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






39. 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






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






41. What is the basic law of magnetic force?






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






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






44. What is a way to classify wires and cables?






45. What makes electrons flow?






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






47. What is the relationship between magnetism and electricity?






48. What is power?






49. What types of protective tapes are used?






50. What is a wire classification?