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WorksheetsJourneyman 08 - Nth
Total questions: 50
Worksheet time: 50mins
1. Using 1.5 volt dry cell, the voltage between A and B would be ___________.
1.5
4
6
12
2. A rigid conduit connecting to an outlet box should have a _________.
Bushing and locknut on the outside
Bushing on the outside and a locknut on the inside
Locknut and bushing on the inside
Locknut on the outside and a bushing on the inside
3. Identified, as used in the Code in reference to a conductor or its terminal, means that such a conductor or terminal is to be recognized as ____________.
Grounded
Bonded
Colored
Marked
4. A toaster will produce less heat on low voltage because ______________.
Its total watt output decreases
The current will decrease
The resistance has not changed
All of these
5. If the current flow through a conductor is increased, the magnetic field around the conductor _____________.
Is changed
Becomes stronger
Collapses
Becomes weaker
6. Comparing a #6 to a #10 conductor of equal lengths, the #6 will have lower ________.
Cost
Weight
Resistance
Strength
7. The definition of ambient temperature is _____________.
The temperature of the conductor
The insulation rating of the conductor
The temperature of the area surrounding the conductor
The different temperature
8. The primary reason for using a hacksaw blade with fine teeth rather than coarse teeth when cutting large stranded conductors is _____________.
A coarse blade would overheat the conductor
A coarse blade breaks too easil
To avoid snagging or pulling strands
A fine blade will bend easier
9. The stranded residential service is a 3-wire, 240 volt single-phase system. The maximum voltage to ground in this system would be __________ volts.
115
120
199
208
10. When working on a motor, the electrician should ____ to prevent accidental starting of the motor.
Remove the fuses
Ground the motor
Shut off the switch
Remove the belts
11. It is the responsibility of the electrician to make sure his tools are in good condition because ___.
Defective tool can cause accidents
The boss may want to use them
The company will pay for only one set of tools
A good job requires perfect tools
12. Continually overloading a conductor is a poor practice because it causes ___________.
The conductor to melt
The insulation to deteriorate
The conductor to shrink
Damage the raceway
13. For better illumination you would __________.
Random spacing of lights
Even spacing, numerous lights
Evenly spaced, higher ceilings
Cluster lights
14. A junction box above a lay-in ceiling is considered _________.
Concealed
Accessible
Readily accessible
Recessed
15. Which of the following metals is most commonly used in the filament of a bulb?
Aluminum
Mercury
Tungsten
Platinum
16. Electrical equipment can be defined as ______________.
I. Fittings
II. Appliances
III. Devices
IV. Fixtures
I only
I & IV only
I,III & IV only
All of these
17. If two equal resistance conductors are connected in parallel, the resistance of the two conductors is equal to ____________.
The resistance of one conductor
Twice the resistance of one conductor
One-half the resistance of one conductor
The resistance of both conductors
18. Wire connections should encircle binding posts in the ______ manner the nut turns to tighten.
Opposite
Same
Reverse
Different
19. Which of the following is a limit switch?
A
B
C
D
20. The primary and secondary windings of a transformer always have __________.
A common magnetic circuit
The same size
Separate magnetic circuits
The same number of turns
21. Which of the following is not the force which moves electron?
EMF
Voltage
Potential
Current
22. A motor with a wide speed range is a __________.
DC motor
AC motor
Synchronous motor
Induction motor
23. The “stator” of an AC generator is another name for the ____________.
Rotating portion
Slip rings
Stationary portion
Housing
24. Where galvanized conduit is used, the main purpose of the galvanizing is _________.
Slow down rust
Provide better continuity
Provide better strength
Provide a better surface for painting
25. To lubricate a motor sleeve bearing you would use ___________.
Grease
Vaseline
Oil
Graphite
26. When soldering conductors, flux is used ___________.
To heat the conductors quicker
To keep the surfaces clean
To prevent loss of heat
To bond the conductors
27. _____ means so constructed or protected that exposure to the weather will not interfere with successful operation.
Weatherproof
Weather tight
Weather resistant
All weather
28. The current used for charging storage batteries is ___________.
Square-wave
Direct
Alternating
Variable
29. You should close a knife switch firmly and rapidly as there will be less ___________.
Likelihood of arcing
Wear on the contacts
Danger of shock
Energy used
30. If one complete cycle occurs in 1/30 of a second, the frequency is ____________.
30 hertz
60 Cycle
115 cycle
60 hertz
31. An instrument that measures electrical energy is called the ___________.
Galvanometer
Wattmeter
Dynamometer
Watt-hour meter
32. In electrical wiring, “wire nuts” are used to ___________.
Connect wires to terminals
Join wires and insulate the joints
Connect the electrode
Tighten the panel studs
33. Which of the following would be the best metal for a magnet?
Steel
Aluminum
Lead
Tin
34. An electrician may use a megger _____________.
To determine the RPM of a motor
To determine the output of a motor
To check the wattage
To test a lighting circuit for a ground.
35. The least important thing in soldering two conductors together is to _____________.
Use plenty of solder
Use sufficient heat
Clean the conductors
Use the proper flux
36. The property of a circuit tending to prevent the flow of current and at the same time causing energy to be converted into heat is referred to as _____________.
The inductance
The resistance
The capacitance
The reluctance
37. Rigid conduit is generally secured to outlet boxes by ___________.
Beam clamps
Locknuts and bushings
Set screw
Offsets
38. Which one of the following is not a safe practice when lifting heavy items?
Use the arm and leg muscles
Keep your back as upright as possible
Keep lifting a heavy object until you get help
Keep your feet spread apart
39. A thermocouple will transform _________ into electricity.
Current
Heat
Work
Watts
40. In a residence the wall switch controlling the ceiling light is usually ____________.
Connected across both lines
A double pole switch
Connected in one line only
A 4-way switch
41. A switch which opens automatically when the current exceeds a predetermined limit would be called a ______________.
Limit switch
Circuit breaker
DT disconnect
Contactor
42. A wattmeter is a combination of which two of the following meters?
I. Ammeter
II. Ohmmeter
III. Phase meter
IV. Volt meter
V. Power factor meter
II & III
I & V
I & IV
II & V
43. What would the ohmmeter read?
100 ohms
200 ohms
125 ohms
50 ohms
44. Acid is not considered a good flux when soldering conductors because it ______________.
Smells bad
Is corrosive
Is non-conductive
Costs too much
45. If the spring tension on a cartridge fuse clip is weak, the result most likely would be ___________.
The fuse would blow immediately
The fuse clips would become warm
The voltage to the load would increase
The supply voltage would increase
46. The branch circuit loads specified by the Code for lighting and receptacles are considered ____.
Minimum loads
Maximum loads
Loads to be served
Peak loads
47. The conductor with the highest insulation temperature rating is _____________.
RH
TW
THWN
THHN
48. After cutting a conduit, to remove the rough edges on both ends, the conduit ends should be ____.
Reamed
Filed
Sanded
Ground
49. To fasten a raceway to a solid concrete ceiling, you would use ___________.
Toggle bolts
Expansion bolts
Wooden plugs
Rawl plugs
50. A commutator of a generator should be cleaned with which of the following?
Emery cloth
Graphite
A smooth file
Fine sandpaper
