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 produced when an alternator rotates 360 electrical degrees through a magnetic field?






2. What is insulation resistance?






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






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






5. What is a conductor?






6. 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






7. How is capacitance determined?






8. What is the unit of measurement of resistance?






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






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






11. What is resistance in electrical terms?






12. What is the fundamental property of insulators?






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






14. What does a transformer transform?






15. What determines the resistance of a resistor?






16. What does a moving charge produce?






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






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






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






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






21. What types of protective tapes are used?






22. What is a characteristic of a fixed resistor?






23. How many kinds of poles do magnets have?






24. What does a first band of white mean?






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






26. What is the relationship between magnetism and electricity?






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






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






29. What is a characteristic of insulators?






30. What makes electrons flow?






31. What does resistance produce?






32. What is induction?






33. What is an electromagnet?






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






35. What is resistance?






36. What is a switch that operates by electricity?






37. To what measurement do the conductor mills refer?






38. What is a wire classification?






39. What is dielectric strength?






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






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






42. What is the measure of potential difference?






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






44. What instrument measures voltage?






45. What is a common form used in conductors?






46. Identify the general blueprint symbol for inductors.






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






48. What is the purpose of capacitors in electrical circuits?






49. What is capacitance in electrical terms?






50. What is the difference between AC and DC?