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Basic Electricity

Subject : engineering
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. Solve the equation: 35 volts / 0.70 amperes= ? ohms - to find resistance.

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

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

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

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

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

7. What determines whether a spark can be produced?

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

9. What instrument measures voltage?

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

11. How do you read resistor color codes?

12. What is the measure of potential difference?

13. What does a transformer transform?

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

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

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

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

18. What is a common measure of wire diameter?

19. What can permanently break down a capacitor?

20. What is a common form used in conductors?

21. What is insulation resistance?

22. What is the use of the electromagnet?

23. What does a moving charge produce?

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

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

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

27. What is power?

28. What is capacitance in electrical terms?

29. What does a first band of white mean?

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

31. What is another name for an inductor?

32. What is resistance in electrical terms?

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

34. What is induction?

35. What is a type of capacitor?

36. The thermocouple uses which method for creating potential energy?

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

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

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

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

41. How are the capacitors connected when the combined capacitance equals a sum of all the capacitors?

42. How many kinds of poles do magnets have?

43. Which of the following is a type of resistor?

44. To what measurement do the conductor mills refer?

45. What is an electromagnet?

46. What does resistance produce?

47. What is the purpose of a raceway?

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

49. Why is the transformer important to AC electricity?

50. What is the relationship between cells and batteries?