WorksheetsRME-JOURNEYMAN #6
Total questions: 89
Worksheet time: 45mins
50. A voltmeter is connected in _______ with the load.
Series
Parallel
Series-parallel
Series-shunt
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
Insulating safety grips on tools __________.
Are enough
Are not meant for that purpose
Should be used with other insulating equipment
Are not enough
The rating of any one portable appliance shall not exceed ___ percent of the branch circuit rating.
40
50
70
80
A generic term for a group of nonflammable synthetic chlorinated hydrocarbons used as electrical insulating media.
Askarel
Acid
Chloragorm
Solder
The part of an electrical system that performs a mechanical function rather than an electrical function is called a (an) _____________.
Receptacle
Device
Fitting
Outlet
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
Solid wire is preferred instead of stranded wire in panel wiring because ____________.
Solid will carry more current
Can be "shaped" better
Cost less than stranded
No derating required for solid
0. Which one of the following is not an insulator?
Bakelite
Oil
Air
Salt water
The definition of accessible (wire):
Admitting close approach
Not guarded by locked doors, elevation, etc
Not permanently closed in by the building or structure
All of the above
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
When voltage and current appear at their zero and peak values at the same time, they are in ____.
Motion
Group
Phase
Balanced
What is ŵeaŶt ďy ͞traveller wires͟?
Wiring to a split receptacle
Two-wires between 3-way switches
Wiring to a door bell
Out of state electrician
On a #4 drill bit, the #4 is determined by ________.
Hardness
Size
Strength
Length
Wiring systems in wet locations should be ___________. a. . b. c. d.
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
The best type of fire extinguisher for an electrical fire is a ____________.
Dry chemical extinguisher
Soda-acid extinguisher
Foam extinguisher
Carbon monoxide extinguisher
͞"Thermally protected" appearing on the nameplate of a motor indicates that the motor is provided with a ____________.
Fuse
Switch
Breaker
Heat sensing element
A capacitor is a device that _____________ energy.
Produces
Stores
Opposes
Increases
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
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
When installing raceway systems, it is essential that they be _________.
Rigidly supported as required
Exposed
Concealed in walls
Readily accessible
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
Two metals of different materials shall not be joined together in order to avoid the ______ action.
Rusting
Galvanic
Reverse
Corrosion
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
The ungrounded conductor can be identified by the color _________.
White or gray
Green or bare
Pink flamingo
None of these
The ungrounded conductor can be identified by the color _________.
White or gray
Green or bare
Pink flamingo
None of these
What is the maximum number of overcurrent devices allowed in a lighting and appliance panelboard?
24
30
36
42
A _________ is a certain type cartridge fuse that can be readily replaced.
Time-lag fuse
Permanent fuse
One-time fuse
Renewable fuse
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
Electricity may be produced by means of ______ forces.
Mechanical
Thermal
Chemical
All of these
Copper-clad aluminum conductors have an ampacity __________.
Equal to copper
Rating of their own
Equal to aluminum
Lower than copper but higher than aluminum
The heating element in a toaster has a ___________.
Low resistance
High resistance
High conductivity
None of these
The total resistance of four 10 ohm resistors in parallel is __________.
10 ohms
2.5 ohms
5 ohms
4 ohms
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
Openings around electrical penetrations through fire-resistant rated walls, partitions, floors or ceilings shall be _________.
Bushed
Sleeved
Firestopped
Isolated
A generator exciter uses ______ current.
Alternating
Direct
Neither alternating nor direct
either alternating or direct
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
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
You would use an approved ________ to protect conductors from abrasion where they enter a box.
Locknut
Bushing
All thread
Hickey
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
The output rating of a one horsepower motor is _______.
1840 watts
746 watts
1500 watts
1000 watts
In other than residential calculations, an ordinary outlet shall be calculated at ________.
200 va
600 watts
300 watts
180 va
Impedance is present in the following type of circuit:
Resistance
DC only
AC only
Both AC and DC
On an insulated conductor the type letter ''TW" indicates________.
Tie wire
Thermoplastic-moisture resistance
Thermoplastic-waterproof
Thermal-with nylon
A load is considered as continuous if it is expected to continue for _________.
½ hour
1 hour
2 hours
3 hours
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
If the primary of the transformer is 480 and secondary is 240/120v, the wire on the _________ is larger.
Tertiary
Secondary
Primary
windings
The important function of a type S fuse is ________.
Non-interchangeable
Slow burner
Motor protection
Fast acting
If the voltage is doubled the ampacity of a conductor _________.
Increases
Decrease
Doubles
Remains the same
A ____ is a protective device for limiting surge voltages by discharging or bypassing surge current, and it also prevents continued flow of follow current while remaining capable of repeating these functions.
Surge arrester
Automatic fuse
Fuse
Circuit breaker
A _____ conductor is one having one or more layers of non-conducting materials that are not recognized as insulation.
Bare
Covered
Insulated
Wrapped
In a DC circuit, the ratio of watts to volt-amperes is __________.
Unity
Greater than one
Less than one
Cannot tell what it might be
A current limiting overcurrent protective device is a device which will ___ the current flowing in the faulted circuit.
Reduce
Increase
Maintain
None of these
The horsepower rating of a motor _________.
Is a measure of motor efficiency
Is the input to the motor
Cannot be changed to watts
Is the output of the motor
A common fuse and circuit breaker works on the principal that _______________.
Voltage develops heat
Voltage breaks down insulation
Current develops heat
Current expands a wire
The voltage will lead the current when the ___________ in the circuit.
Inductive reactance exceeds the capacitive reactance
Reactance exceeds the resistance in the circuit
Resistance exceeds the reactance
Capacitive reactance exceeds the inductive reactance
______ 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.
Remote-control
Automatic
Semi-automatic
Controller
A 1000 watt, 120 volt lamp uses electrical energy at the same rate as a 14.4 ohm resistor on _____.
120 volts
115 volts
208 volts
240 volts
When using compressed air to clean electrical equipment the air pressure should not exceed 50 pounds. The main reason is higher pressures _____________.
May loosen insulating tape
May blow dust to surrounding equipment
Introduce a personal hazard to the user
May rupture the air hose
Which of the following is not used to fasten equipment to concrete?
Expansion bolt
Lead sheath
Rawl plug
Steel bushing
A single-pole switch to operate a light will have the wiring connected in the ____ conductor.
Grounded
Identified
Ungrounded
Neutral
The decimal equivalent of 9/16 is _____________.
0.5625
0.675
0.875
None of these
The information most useful in preventing the recurrence of a similar type accident when making out an accident report would be ___________.
The nature of the injury
The cause of the accident
The weather conditions at the time
The age of the person involved
Artificial respiration after a severe electrical shock is necessary when the shock results in ________.
Broken limbs
Bleeding
Stoppage of breathing
Unconsciousness
If the circuit voltage is increased, all else remains the same, only the _____ will change.
Resistance
Current
Ampacity
Conductivity
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
I only
I & II only
II & III only
I, II & III
When accidentally splashing a chemical into the eyes the best immediate first aid solution is to ____.
Look directly into the sun
Rub the eyes with dry cloth
Flush eyes with clean water
Close eyes quickly
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 blink
I only
II only
III only
I, II & III
The Code considers low voltage to be __________.
480 volts or less
600 volts or less
24 volts
12 volts
A high spot temperature in a corroded electrical connection is caused by a (an) _________.
Increase in the flow of current through the connection
Decrease in the voltage drop across the connection
Increase in the voltage drop across the connection
Decrease in the effective resistance of the connection
_______ is the symbol used for the delta connection.
Ω
Σ
𝜙
Δ
Because aluminum is not a magnetic metal, there will be ______ present when aluminum conductors are grouped in a raceway.
No heat due to voltage
No heating due to hysteresis
No induced currents
None of these
A switch is a device for _____________.
I. Making or braking connections
II. Changing connections
III. Interruption of circuit under shortcircuit conditions
I only
I & II only
II & III only
I, II & III
At least two persons are required to be present during a high-voltage test because ____________.
One person can cover while the one is on break
High voltage is too heavy for one
If one is hurt the other person can help
It eliminates overtime
One of the essential functions of any switch is to maintain a _____________.
Good high-resistance contact in the closed position
Good low-resistance contact in the closed position
Good low-resistance contact in the open position
Good high-resistance contact in the open position
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
II & III only
I, II & III only
II, III & IV only
I, II, III & IV
Silver and gold are better conductors of electricity than copper; however, the main reason copper is used is its ______________.
Weight
Melting point
Strength
Cost is less
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?
4
5
6
None of these
The term "open circuit" means_____________.
The wiring is in an open area
The wiring is exposed on a building
All parts of the circuit are not in contact
The circuit has one end exposed
Conduit should be installed as to prevent the collection of water in it between outlets. The conduit should not have _______________.
Low point at an outlet
High point at an outlet
High point between successive outlets
Low point between successive outlets
Brass is an alloy of ___________.
Zinc and copper
Tin and lead
Lead and copper
Lead and tin
Which type of the following portable fire extinguishers should be used on a live electrical fire?
Carbon dioxide
Water
Foam
Soda-acid
Enclosed knife switches that require the switch to be open before the housing door can be opened, are called ____________ switches.
Release
Safety
Air-break
Service
What Article of the Code addresses high-voltage (over 600 volts)?
450
230
680
490
When applying rubber tape to an electrical splice, it would be necessary to ____________.
Stretch the tape properly during the application
Apply an adhesive to the splice before applying the tape
Apply the rubber tape after any other tape
Apply heat to the tape when installing
A stranded wire with the same AWG as a solid wire _________________.
Is used for higher voltages
Has a higher ampacity
Is larger in total diameter
Has the same resistance
When rigid metal conduits are buried the minimum cover required by the Code is ________.
6"
12"
18"
24"
A fixture that weighs more than ______ pounds shall not be supported by the screw shell of a lampholder.
2
3
4
6
