1. Smitty’s Two Minute Drill General Knowledge 2
© Ted Smith 2017
Electrical Experts Consulting

2. General Knowledge Category
The General Knowledge Category on the Journeyman Wireman’s test is the only knowledge portion of the test.
You can not look up the answers to these questions in the Code like you can the rest of the questions.
They are testing you on your general knowledge of electricity, Ohms Law, Kirchoffs Law, Faradays Law, grounding theory and basically how electrical circuits work.
The following questions will help refresh you on these items and also give you some practice on basic math skills which will help you on questions in this category and through out the test.
General Knowledge Category

3. Click on the slide to start the timer and begin the test
Be sure to place this presentation in Slide Show Mode if it is not already in that mode before proceeding
The purpose of this drill is to help you improve your skill at finding answers to questions using the applicable fire codes and also to help increase your knowledge of the Fire Alarm codes.
Each slide will contain a question. The question will remain in the screen for a period of 2 minutes then a notification will sound and the slide will transition to the next slide with the answer. After 15 seconds the next question will appear.
During the test do not worry about the correct answers when those slide appear. You will be given an opportunity to review the answers with out the time at the end of the test.
Click on the slide to start the timer and begin the test
Instructions

4. Basic Math Operations
1. The decimal equivalent for the fraction 1/8 is ___________. .5
.25
.125
.333

5. Divide the lower number into the upper number of the fraction.
Answer C
Divide the lower number into the upper number of the fraction.
1/8=.125

6. Electrical Theory and Operation
2. Current flowing into a node (or a junction) must be equal to current flowing out of it. This is ________________ first law.
Ohms
Faradays
Kirchoffs
Fredriechs

7. Answer
C. Kirchoffs
Electrical Theory

8. Electrical Theory and Operation and Algebra
3. What is the maximum distance that two 14 AWG copper conductors can be run if they carry 16A and the maximum allowable voltage drop is 10V?
50 feet
75 feet
100 feet
150 feet

9. Answer C. 100 feet 2KDI/CM=VD (2x12.9xDx 16)/4110= 10
Multiply both sides by 4110
2 x12.9xDx 16=41100
Simplify the left side multiplying the values
412.8D=41100
Divide both side by 412.8
D=99.56
Maximum distance of feet

10. NEC
4. Any change in the magnetic environment of a coil of wire will cause a voltage (emf) to be "induced" in the coil is part of ______________ law.
Ohms
Kirchoffs
Faradays
Teslas

11. Answer
C. Faradays
Electrical Theory

12. Electrical Theory and Operation
5. What is the current in amperes of an 18 kW, 208V, three phase load?
45 amperes
50 amperes
60 amperes
75 amperes

13. Answer
C. 50 amperes
VA/(Voltage x 1.732)
18000/360.22=49.96
50 A

14. Understanding of the Electrical Industry
6. The cross sectional area of a conductor is commonly expressed in _____________.
Square inches
Mils
Circular mils
None of these

15. Electrical Industry Understanding
Answer
C. Circular Mils
Electrical Industry Understanding

16. NEC 7. What is the cross sectional area of a 000 AWG wire?
167,800 cmil
212,965 cmil
16,510 cmil
6,530 cmil

17. Answer
A. 167,800 cmil
Chapter 9, Table 8

18. Electrical Theory and Operation
8. The larger the cross sectional area of a conductor the lower the resistance of the conductor because ________________.
There are more paths for current flow than in smaller conductors
There is less resistance in the material which is used for larger conductors
Skin effect forces all the electrons to flow through the center of the wire and only one path of current flow.
There is less resistance in the insulation of larger conductors.

19. Answer
A. There are more paths for current flow than in smaller conductors
Electrical Theory and Operation

20. Electrical Theory and Operation
9. What is the direct current resistance of an 8 AWG sold aluminum conductor which is 356 feet long?
1.26 ohms
1.28 ohms
.3987 ohms
ohms

21. Answer Chapter 9, Table 8. 1.26 ohms in 1000 feet D. .44856 ohms
1.26/ 1000= ohms per foot
x 356= ohms

22. Electrical Theory and Application
10. One volt of EMF is required to push one ampere of current through one ohm of resistance to provide 1 watt of power is ________________ law.
Ohms
Kirchoffs
Faradays
Teslas

23. Answer
A. Ohms Law
Electrical Theory

24. END of QUIz. THE TIME WILL STOP NOW
END of QUIz. THE TIME WILL STOP NOW. PLEASE CLICK ON THE SLIDE TO CONTINUE WITHOUT THE TIMER AND REVIEW EACH QUESTION.

25. Basic Math Operations
1. The decimal equivalent for the fraction 1/8 is ___________. .5
.25
.125
.333

26. Divide the lower number into the upper number of the fraction.
Answer C
Divide the lower number into the upper number of the fraction.
1/8=.125

27. Electrical Theory and Operation
2. Current flowing into a node (or a junction) must be equal to current flowing out of it. This is ________________ first law.
Ohms
Faradays
Kirchoffs
Fredriechs

28. Answer
C. Kirchoffs
Electrical Theory

29. Electrical Theory and Operation and Algebra
3. What is the maximum distance that two 14 AWG copper conductors can be run if they carry 16A and the maximum allowable voltage drop is 10V?
50 feet
75 feet
100 feet
150 feet

30. Answer C. 100 feet 2KDI/CM=VD (2x12.9xDx 16)/4110= 10
Multiply both sides by 4110
2 x12.9xDx 16=41100
Simplify the left side multiplying the values
412.8D=41100
Divide both side by 412.8
D=99.56
Maximum distance of feet

31. NEC
4. Any change in the magnetic environment of a coil of wire will cause a voltage (emf) to be "induced" in the coil is part of ______________ law.
Ohms
Kirchoffs
Faradays
Teslas

32. Answer
C. Faradays
Electrical Theory

33. Electrical Theory and Operation
5. What is the current in amperes of an 18 kW, 208V, three phase load?
45 amperes
50 amperes
60 amperes
75 amperes

34. Answer
C. 50 amperes
VA/(Voltage x 1.732)
18000/360.22=49.96
50 A

35. Understanding of the Electrical Industry
6. The cross sectional area of a conductor is commonly expressed in _____________.
Square inches
Mils
Circular mils
None of these

36. Electrical Industry Understanding
Answer
C. Circular Mils
Electrical Industry Understanding

37. NEC 7. What is the cross sectional area of a 000 AWG wire?
167,800 cmil
212,965 cmil
16,510 cmil
6,530 cmil

38. Answer
A. 167,800 cmil
Chapter 9, Table 8

39. Electrical Theory and Operation
8. The larger the cross sectional area of a conductor the lower the resistance of the conductor because ________________.
There are more paths for current flow than in smaller conductors
There is less resistance in the material which is used for larger conductors
Skin effect forces all the electrons to flow through the center of the wire and only one path of current flow.
There is less resistance in the insulation of larger conductors.

40. Answer
A. There are more paths for current flow than in smaller conductors
Electrical Theory and Operation

41. Electrical Theory and Operation
9. What is the direct current resistance of an 8 AWG sold aluminum conductor which is 356 feet long?
1.26 ohms
1.28 ohms
.3987 ohms
ohms

42. Answer Chapter 9, Table 8. 1.26 ohms in 1000 feet D. .44856 ohms
1.26/ 1000= ohms per foot
x 356= ohms

43. Electrical Theory and Application
10. One volt of EMF is required to push one ampere of current through one ohm of resistance to provide 1 watt of power is ________________ law.
Ohms
Kirchoffs
Faradays
Teslas

44. Answer
A. Ohms Law
Electrical Theory