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 capacitors in electrical circuits?






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






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






4. What is the difference between AC and DC?






5. Identify the general blueprint symbol for inductors.






6. What does resistance produce?






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






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






9. Why is the transformer important to AC electricity?

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10. What does a transformer transform?






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






12. What is insulation resistance?






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






14. What is power?






15. What is a type of capacitor?






16. What is a wire classification?






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






18. What do transducers do in electrical terms?






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






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






21. What is an electromagnet?






22. What is the use of the electromagnet?






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






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






25. What is a characteristic of a fixed resistor?






26. To what measurement do the conductor mills refer?






27. What does Ohm's Law represent?






28. What is induction?






29. Which type of cell can be recharged?






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






31. What is capacitance in electrical terms?






32. What is a type of mechanical transducer?






33. What is the type of cable composed of many fine wires?






34. What is voltage?






35. What wire measurement is commonly used in the U.S.?






36. Identify the blueprint symbol for capacitors.






37. What is a DC circuit characteristic?






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






39. What does a moving charge produce?






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






41. What is resistance?






42. What is the measure of potential difference?






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






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






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






46. What do junction boxes protect?






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






48. What is the fundamental property of insulators?






49. What is the relationship between magnetism and electricity?






50. What is the relationship between cells and batteries?