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WorksheetsJourneyman 10 - Nth
Total questions: 50
Worksheet time: 50mins
1. The neutral conductor shall not be ____________.
Stranded
Solid
Insulated
Fused
2. The voltage drop in a line can be decreased by_______________.
I. Increasing the wire size
II. Increasing the current
III. Decreasing the load
I only
I and II only
I, II and III
I and III only
3. In a residence, no point along the floor line in any wall space may be more than ___ feet from an outlet.
6
6 ½
12
10
4. Insulating safety grips on tools __________.
Are enough
Are not meant for that purpose
Should be used with other insulating equipment
Are not enough
5. The rating of any one portable appliance shall not exceed ___ percent of the branch circuit rating.
40
50
70
80
6. A generic term for a group of non-flammable synthetic chlorinated hydrocarbons used as electrical insulating media.
Askarel
Acid
Chloragorm
Solder
7. The part of an electrical system that performs a mechanical function rather than an electrical function is called a (an) _____________.
Receptacle
Device
Fitting
Outlet
8. An electrical condenser is best defined as _______________.
A coil of wire
A wrapping of layers of metal foil
A coil of wire with layers of metal foil
A wrapping of many layers of metal foil set apart by waxed paper
9. Solid wire is preferred instead of stranded wire in panel wiring because ____________.
Costs less than stranded
Solid will carry more current
Can be “shaped” better
No derating required for solid
10. Which one of the following is not an insulator?
Bakelite
Oil
Air
Salt water
11. The definition of accessible (wire):
a. Admitting close approach
Not guarded by locked doors, elevation, etc
Not permanently closed in by the building or structure
All of the above
12. The Code is designed for safety regardless of _______________.
I. Cost
II. Time
III. Maintenance
IV. Efficiency
V. Future structure
I & II
III & IV
I through IV
I through V
13. When voltage and current appear at their zero and peak values at the same time, they are in ____.
Motion
Group
Phase
Balanced
14. What is meant by “traveler wires”?
Wiring to a split receptacle
Two-wires between 3-way switches
Wiring to a door bell
Out of state electrician
15. On a #4 drill bit, the #4 is determined by ________.
Hardness
Size
Strength
Length
16. Wiring systems in wet locations should be ___________.
Placed so a permanent air space separates them from the supporting surface.
Separated by insulated bushings
Separated by non-combustible tubing
Protected by a guard strip
17. The best type of fire extinguisher for an electrical fire is a ____________.
Dry chemical extinguisher
Soda-acid extinguisher
Foam extinguisher
Carbon monoxide extinguisher
18. “Thermally protected” appearing on the nameplate of a motor indicates that the motor is provided with a ____________.
Fuse
Switch
Breaker
Heat sensing element
19. A capacitor is a device that _____________ energy.
Produces
Stores
Opposes
Increases
20. When working near acid storage batteries, extreme care should be taken to guard against sparks essentially to avoid __________.
Overheating the electrolyte
An electric shock
A short circuit
An explosion
21. Which of the following statements is incorrect?
Current flowing through a conductor causes heat
The conduit of an electrical system should be grounded
Volt meters are connected in parallel in a circuit
Rectifiers change DC to AC
22. When installing raceway systems, it is essential that they be _________.
Rigidly supported as required
Exposed
Concealed in walls
Readily accessible
23. Which of the following is a “handy” box?
A
B
C
D
24. The reason for grounding the frame of a portable electric hand tool is to ___________.
Prevent the frame of the total tool from becoming alive to ground
Prevent overheating of the tool
Prevent shorts
Reduce the voltage drop
25. Two metals of different materials shall not be joined together in order to avoid the ______ action.
Rusting
Galvanic
Reverse
Corrosion
26. A ___ device which serves to govern in some predetermined manner the electric power delivered to the apparatus to which it’s connected.
Switch
Feeder
Service
Controller
27. The ungrounded conductor can be identified by the color _________.
White or gray
Green or bare
Pink flamingo
None of these
28. What is the maximum number of overcurrent devices allowed in a lighting and appliance panelboard?
24
30
36
42
29. A _________ is a certain type cartridge fuse that can be readily replaced.
Time-lag fuse
Permanent fuse
One-time fuse
Renewable fuse
30. The purpose of a Western Union splice is ____________.
For the use of the utility companies only
For the purpose of strengthening a splice
For use on the west coast only
None of these
31. Electricity may be produced by means of ______ forces.
Mechanical
Thermal
Chemical
All of these
32. Copper-clad aluminum conductors have an ampacity __________.
Lower than copper but higher than aluminum
Equal to copper
Rating of their own
Equal to aluminum
33. The heating element in a toaster has a ___________.
Low resistance
High resistance
High conductivity
None of these
34. The total resistance of four 10 ohm resistors in parallel is __________.
10 ohms
2.5 ohms
5 ohms
4 ohms
35. To mark a point on the floor directly beneath a point on the ceiling, it is best to use a ______.
Transit rod
Plumb bob
Square
12’ tape
36. Openings around electrical penetrations through fire-resistant rated walls, partitions, floors or ceilings shall be _________.
Bushed
Sleeved
Firestopped
Isolated
37. A generator exciter uses ______ current.
Alternating
Direct
Neither alternating nor direct
either alternating or direct
38. When installing an instrument meter on a panel, to obtain accurate mounting __________.
Use the meter and drill through the holes
Drill oversize holes
Use a template
Drill from back of panel
39. The advantage of cutting a metal rigid conduit with a hacksaw rather than pipe cutter is _____.
You do not need a vice
Less energy required in cutting
Less reaming is required
Threading oil is not required
40. You would use an approved ________ to protect conductors from abrasion where they enter a box.
Locknut
Bushing
All thread
Hickey
41. To reverse the rotation of a three-phase motor you would ____________.
Reverse all the leads
Reverse two of the four leads
Turn it around
Reverse any two of the three leads
42. The output rating of a one horsepower motor is _______.
1840 watts
746 watts
1500 watts
1000 watts
43. In other than residential calculations, an ordinary outlet shall be calculated at ________.
200 va
600 watts
300 watts
180 va
44. Impedance is present in the following type of circuit:
Resistance
DC only
AC only
Both AC and DC
45. On an insulated conductor the type letter “TW” indicates ________.
Tie wire
Thermoplastic-moisture resistance
Thermoplastic-waterproof
Thermal-with nylon
46. A load is considered as continuous if it is expected to continue for _________.
½ hour
1 hour
2 hours
3 hours
47. The standard classification of branch circuits applied only to those circuits with ________ outlets.
Two or more
More than two
More than three
Three or more
48. If the primary of the transformer is 480 and secondary is 240/120v, the wire on the _________ is larger.
Tertiary
Secondary
Primary
Windings
49. The important function of a type S fuse is ________.
Non-interchangeable
Slow burner
Motor protection
Fast acting
50. If the voltage is doubled the ampacity of a conductor _________.
Increases
Decrease
Doubles
Remains the same
