2. A _____ conductor is one having one or more layers of non-conducting materials that are not recognized as insulation.

3. In a DC circuit, the ratio of watts to voltamperes is __________.

4. A current limiting overcurrent protective device is a device which will ___ the current flowing in the faulted circuit.

5. The horsepower rating of a motor _________.

6. A common fuse and circuit breaker works on the principal that _______________.

7. The voltage will lead the current when the ___________ in the circuit.

8. Which of the following is an Allen head bolt?

9. ______ is a self-acting, operating by its own mechanism when actuated by some impersonal influence, as for example, a change in current strength, pressure, temperature, or mechanical configuration.

10. A 1000 watt, 120 volt lamp uses electrical energy at the same rate as a 14.4 ohm resistor on _____.

11. When using compressed air to clean electrical equipment the air pressure should not exceed 50 pounds. The main reason is higher pressures _____________.

12. Which of the following is not used to fasten equipment to concrete?

13. A single-pole switch to operate a light will have the wiring connected in the ____ conductor.

14. The decimal equivalent of 9/16 is _____________.

15. The information most useful in preventing the recurrence of a similar type accident when making out an accident report would be ___________.

16. What is the total wattage of this circuit?

17. Artificial respiration after a severe electrical shock is necessary when the shock results in ________.

18. If the circuit voltage is increased, all else remains the same, only the _____ will change.

19. The two methods of making joints or connections for insulated cables are soldered connections and by means of solderless connection devices (wirenuts). The advantage (s) of a solderless connection is/are ____.

I. Will not fail under short circuit due to melting of solder

II. Mechanical strength as great as solder

III. Reduces the time required to make a splice

20. Which of the following plugs is a polarized plug?

21. When accidentally splashing a chemical into the eyes the best immediate first aid solution is to ____.

22. It is generally not good practice to supply lamps and motors from the same circuit because _____.

I. It is more economical to operate motors on a higher voltage than that of a lighting circuit

II. Overloads and short circuits are more common on motor circuits and would put the lights out

III. When a motor is started it would cause the lights to dim or blin

23. Which of the following is the correct wiring to a light controlled by two 3-way switches?

24. The Code considers low voltage to be _________

25. The cross-sectional area of the bus bar is __________ square inch.

26. A high spot temperature in a corroded electrical connection is caused by a (an) _________.

27. _______ is the symbol used for the delta connection.

28. Because aluminum is not a magnetic metal, there will be ______ present when aluminum conductors are grouped in a raceway.

29. A switch is a device for _____________.

I. Making or braking connections

II. Changing connections

III. Interruption of circuit under short-circuit conditions

30. At least two persons are required to be present during a high-voltage test because ____________.

31. One of the essential functions of any switch is to maintain a _____________.

32. Which of the following is a 30-amp receptacle?

33. When the ground resistance exceeds the allowable value of 25 ohms, the resistance can be reduced by _______.

I. Paralleling ground rods

II. Using a longer ground rod

III. Using a larger diameter ground rod

IV. Chemical treatment of the soil

34. Silver and gold are better conductors of electricity than copper; however, the main reason copper is used is its ______________.

35. Standard lengths of conduit are in 10 foot lengths. A required feeder raceway is 18 yards in length, how many lengths of 10 foot conduit would you need?

36. The term “open circuit” means _____________.

37. Which of the items below is used to test specific gravity?

38. Conduit should be installed as to prevent the collection of water in it between outlets. The conduit should not have _______________.

39. Brass is an alloy of ___________.

40. Which type of the following portable fire extinguishers should be used on a live electrical fire?

41. Enclosed knife switches that require the switch to be open before the housing door can be opened, are called ____________ switches.

42. Which of the following is a solenoid?

43. What Article of the Code addresses high-voltage (over 600 volts)?

44. A close nipple ___________.

45. When applying rubber tape to an electrical splice, it would be necessary to ____________.

A stranded wire with the same AWG as a solid wire _________________.

47. A limit switch is used on a piece of machinery to open the circuit when the ____________.

48. With switches 1 and 2 closed the combined resistance of the circuit is _____ ohms.

49. When rigid metal conduits are buried the minimum cover required by the Code is ________.

50. A fixture that weighs more than ______ pounds shall not be supported by the screw shell of a lampholder.