Lonnie Dobyns
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EWR AND DELMAR’S

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Lonnie Dobyns
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Module 1-3 (EWR 19TH EDITION & DELMAR'S 6TH EDITION)

Question 1 of 92

1

The open-circuit voltage between the two terminals of a single-pole switch on a lighting circuit when the switch is in the OFF position is

Select one of the following:

  • Zero

  • 60

  • 120

  • 240

Explanation

Question 2 of 92

1

An arc flash can produce temperatures of ________ degrees F

Select one of the following:

  • 3500

  • 15000

  • 25000

  • 35000

Explanation

Question 3 of 92

1

Footwear suitable for electrical work is marked with letters ____

Select one of the following:

  • CF

  • EH

  • OSHA

  • PPE

Explanation

Question 4 of 92

1

For safety, it is very important that electrical equipment be “listed” by the _____

Select one of the following:

  • NEC

  • OSHA

  • NRTL

  • ANSI

Explanation

Question 5 of 92

1

The NEC is revised every ______ years so as to be as up to date as possible.

Select one of the following:

  • 2

  • 3

  • 4

  • 5

Explanation

Question 6 of 92

1

The term APPROVED means to be _______.

Select one of the following:

  • listed by a Nationally Recognized Testing Laboratory (NRTL)

  • acceptable to the NEC

  • acceptable to the architect or engineer designing the job

  • acceptable to the authority having jurisdiction

Explanation

Question 7 of 92

1

As defined in ARTICLE 100, a dwelling unit has the following feature(s)

Select one of the following:

  • permanent provisions for living, sleeping, cooking, and sanitation

  • living, sleeping, and basement storage areas

  • space for eating, sleeping and recreation

  • optional garage space

Explanation

Question 8 of 92

1

All measurements in the NEC are shown in which system(s) of units?

Select one of the following:

  • inch-pound (English) only

  • SI (Metric) only

  • both inch-pound and metric values

  • both natural units and physical units

Explanation

Question 9 of 92

1

In the international system of units, the prefix KILO- means

Select one of the following:

  • hundred

  • thousand

  • million

  • billion

Explanation

Question 10 of 92

1

In the international system of units, the prefix MILLI- means

Select one of the following:

  • one hundredth

  • one thousandth

  • one millionth

  • one billionth

Explanation

Question 11 of 92

1

The NEC defines a "qualified person" as one who has skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training to recognize and avoid the hazards involved.

Select one of the following:

  • True
  • False

Explanation

Question 12 of 92

1

Nationally Recognized Testing Laboratories (NRTL) _________ electrical products to provide a basis for approval by inspectors in the field.

Select one of the following:

  • approve

  • test and list

  • develop standards

  • endorse

Explanation

Question 13 of 92

1

The purpose of the NEC code is the practical safe guarding of persons and property from hazards arising from the use of electricity.

Select one of the following:

  • True
  • False

Explanation

Question 14 of 92

1

Fill the blank space to complete the text.

Always the power before working on an electrical circuit.

Explanation

Question 15 of 92

1

Fill the blank space to complete the text.

Every time an electrician makes a decision concerning the electrical wiring, the decision should be checked by reference to the .

Explanation

Question 16 of 92

1

Fill the blank space to complete the text.

The AUTHORITY HAVING JURISDICTION over the electrical construction is generally the .

Explanation

Question 17 of 92

1

Fill the blank space to complete the text.

The use of the word SHALL indicates a rule.

Explanation

Question 18 of 92

1

Fill the blank space to complete the text.

Nationally Recognized Testing Laboratories (NRTL) test and evaluate products for .

Explanation

Question 19 of 92

1

What is the smallest part of an element that still retains the properties of that element.

Select one of the following:

  • an atom

  • a proton

  • neutron

  • an electron

Explanation

Question 20 of 92

1

What type of current flows in only one direction?

Select one of the following:

  • alternating

  • direct

Explanation

Question 21 of 92

1

Device plates must be mounted as to _____.

Select one of the following:

  • cover the opening in the wall without seating against the wall surface

  • seat against the wall surface without covering the opening in the wall

  • be parallel to lines in the tile and similar wall finishes

  • cover the opening in the wall and to seat against the wall surface

Explanation

Question 22 of 92

1

Fill the blank space to complete the text.

Producing electricity from light involves the use of particles called .

Explanation

Question 23 of 92

1

What force is demonstrated in objects with unlike charges?

Select one of the following:

  • attraction

  • repulsion

Explanation

Question 24 of 92

1

Fill the blank space to complete the text.

Device boxes are designed for size NO. screws.

Explanation

Question 25 of 92

1

What is the maximum number of valence electrons in an atom?

Select one of the following:

  • 12

  • 8

  • 6

  • 4

Explanation

Question 26 of 92

1

what are the three principle parts of an atom?

Select one of the following:

  • electron, proton, and quark

  • neutron, positron, and electron

  • electron, neutron and proton

  • neutron, quark and electron

Explanation

Question 27 of 92

1

where noncombustible surface material is used on walls or ceilings, outlet boxes must be mounted so that they will be set back not more than ___ from the face of the surface material.

Select one of the following:

  • 1/16 in. (1.5mm)

  • 1/8 in. (3mm)

  • 1/4 in. (6mm)

  • 1/2 in. (12mm)

Explanation

Question 28 of 92

1

Fire resistance rating means the amount of time in minutes that a structure or component can withstand fire.

Select one of the following:

  • True
  • False

Explanation

Question 29 of 92

1

Fill the blank spaces to complete the text.

Lighting outlet boxes are designed for size No. OR screws.

Explanation

Question 30 of 92

1

A receptacle outlet is a ______

Select one of the following:

  • outlet where one or more receptacles are installed

  • outlet intended for the connection of a utilization device

  • outlet intended for the direct connection of a lamp holder

  • contact device for the connection of an attachment plug

Explanation

Question 31 of 92

1

Fill the blank space to complete the text.

The theory stating that current flow is produced when an electron from one atom knocks electrons of another atom out of orbit is generally called the theory.

Explanation

Question 32 of 92

1

The nucleus of an atom contains ______.

Select one of the following:

  • neutrons and protons

  • electrons and protons

  • neutrons and quarks

  • electrons and quarks

Explanation

Question 33 of 92

1

Fill the blank space to complete the text.

When doing work, requirements for supporting and securing cables are relaxed so that the cables can be "fished" through existing wall construction.

Explanation

Question 34 of 92

1

What part of an atom has a positive charge?

Select one of the following:

  • neutron

  • quark

  • proton

  • electron

Explanation

Question 35 of 92

1

Fill the blank space to complete the text.

Receptacles are not permitted to be mounted directly over heaters in residential construction.

Explanation

Question 36 of 92

1

What part of an atom has a negative charge?

Select one of the following:

  • proton

  • quark

  • electron

  • neutron

Explanation

Question 37 of 92

1

Electrical wall boxes should not be mounted back-to-back in walls because ______.

Select one of the following:

  • it reduces the fire resistance of the wall

  • the practice violates building codes

  • sound may be transmitted from room to room.

  • all of the above

Explanation

Question 38 of 92

1

Alternating current is described as _____.

Select one of the following:

  • unidirectional

  • bidirectional

  • omnidirectional

Explanation

Question 39 of 92

1

Electrical current is the flow of ______

Select one of the following:

  • electrons

  • protons

  • quarks

  • neutrons

Explanation

Question 40 of 92

1

The NEC defines an OUTLET as a point in the wiring system where current is taken to supply luminaires.

Select one of the following:

  • True
  • False

Explanation

Question 41 of 92

1

Fill the blank space to complete the text.

The smallest part of a compound that retains the properties of that compound is a .

Explanation

Question 42 of 92

1

The NEC requires that a _________ be installed at each conductor splice connection point.

Select one of the following:

  • box or conduit body

  • duplex receptacle outlet

  • insulated wire connector

  • grounding electrode conductor ( ground wire)

Explanation

Question 43 of 92

1

The requirements for installing a lighting fixture weighing more than fifty pounds is to be supported independently of the outlet box unless the outlet box is listed and marked on interior of box to indicate the max weight the box is permitted to support.

Select one of the following:

  • True
  • False

Explanation

Question 44 of 92

1

Direct current is described as

Select one of the following:

  • Unidirectional

  • Bidirectional

  • Omnidirectional

Explanation

Question 45 of 92

1

Fill the blank space to complete the text.

In walls or ceilings constructed of non combustible material, such as concrete or tile, the edge of the outlet box is permitted to be set back not more than from the finished surface.

Explanation

Question 46 of 92

1

What type of current reverses its direction of flow at regular intervals?

Select one of the following:

  • Direct

  • Alternating

Explanation

Question 47 of 92

1

According to ________, unused knockouts and other openings in electrical boxes and cabinets are required to be closed.

Select one of the following:

  • NEC 314.21

  • NEC 408.7

  • Article 100

  • NEC 110.12(A)

Explanation

Question 48 of 92

1

The symbol for a four-way switch is?

Select one of the following:

  • S4

  • SDS

  • S

  • S3

Explanation

Question 49 of 92

1

The symbol for a dimmer switch is?

Select one of the following:

  • S4

  • SDS

  • S

  • S3

Explanation

Question 50 of 92

1

The symbol for a 3-way switch is?

Select one of the following:

  • S4

  • SDS

  • S

  • S3

Explanation

Question 51 of 92

1

The symbol for a single-pole switch is?

Select one of the following:

  • S4

  • S

  • SDS

  • S3

Explanation

Question 52 of 92

1

What force is demonstrated in objects with like charges?

Select one of the following:

  • Attraction

  • Repulsion

Explanation

Question 53 of 92

1

The valance shellof an atom is the _____ shell.

Select one of the following:

  • Middle

  • Inner

  • Outer

  • Bottom

Explanation

Question 54 of 92

1

A device’s primary function is to _____?

Select one of the following:

  • Act as a resistor

  • Transform electric energy

  • Control electric energy

  • Utilize electric energy

Explanation

Question 55 of 92

1

Which piece of electrical equipment is NOT considered a device?

Select one of the following:

  • Lamp

  • Three-way switch

  • Disconnected switch

  • Receptacle

Explanation

Question 56 of 92

1

an electric circuit has a resistance of 20 ohm. The current is measured to be 6A. How many volts are applied to the circuit?

Select one of the following:

  • 3 1/3

  • 14

  • 26

  • 120

Explanation

Question 57 of 92

1

One coulomb per second is equal to one ________.

Select one of the following:

  • volt

  • ampere

  • watt

  • ohm

Explanation

Question 58 of 92

1

which of the following is NOT included when calculating the usable area of a dwelling to compute the required lighting load?

Select one of the following:

  • unfinished basement

  • powder rooms

  • living room

  • crawl space

Explanation

Question 59 of 92

1

the amount of electrical power being used in a circuit is measured in ________.

Select one of the following:

  • amperes

  • volts

  • watts

  • ohms

Explanation

Question 60 of 92

1

Wall receptacles must be placed so that no point measured horizontally along the floor line in any wall space is more than ____ feet from a receptacle outlet.

Select one of the following:

  • 3

  • 5

  • 6

  • 12

Explanation

Question 61 of 92

1

Code specifies that an ATTIC SPACE (not intended for storage) must have a switched lighting outlet or switched receptacle.

Select one of the following:

  • True
  • False

Explanation

Question 62 of 92

1

Code specifies that an BATHROOM must have a switched lighting outlet or switched receptacle.

Select one of the following:

  • True
  • False

Explanation

Question 63 of 92

1

Code specifies that a HALLWAY does not need a switched lighting outlet or switched receptacle.

Select one of the following:

  • True
  • False

Explanation

Question 64 of 92

1

Code specifies that a STAIRWAY must have a switched lighting outlet or switched receptacle.

Select one of the following:

  • True
  • False

Explanation

Question 65 of 92

1

Calculate the minimum number of 15-ampere lighting branch circuits required in a residence of 1850 square feet. ( VA X SQ FT) / 120 V

Select one of the following:

  • 2

  • 4

  • 1

  • 3

Explanation

Question 66 of 92

1

A grounding conductor helps prevent a shock hazard in the event that an un-grounded, or hot, conductor comes in contact with the case or frame of an appliance.

Select one of the following:

  • True
  • False

Explanation

Question 67 of 92

1

In the construction of one and two family dwellings, the electrical circuits are usually designed by the _________.

Select one of the following:

  • project manager

  • electrician

  • architect

  • consulting engineer

Explanation

Question 68 of 92

1

The minimum lighting load requirement for dwellings is ____ volt-amperes per square foot.

Select one of the following:

  • 2

  • 3

  • 5

  • 10

Explanation

Question 69 of 92

1

The statement, " in a DC circuit, the current is directly proportional to voltage and inversely proportional to resistance," is known as ______ law.

Select one of the following:

  • Ampere's

  • Coulomb's

  • Ohm's

  • Volt's

Explanation

Question 70 of 92

1

What is another term for electromotive force (EMF)?

Select one of the following:

  • amperage

  • ohmage

  • wattage

  • voltage

Explanation

Question 71 of 92

1

Continuous loads are not permitted to exceed ____ of the rating of the branch circuit.

Select one of the following:

  • 50

  • 80

  • 100

  • 125

Explanation

Question 72 of 92

1

Two cases where outdoor receptacles are exempt from GFCI are 1) outlets on dedicated circuit used for deicing of snow melting. 2) Outlets on dedicated circuits for HVAC equipment.

Select one of the following:

  • True
  • False

Explanation

Question 73 of 92

1

The neutral conductor is also referred to as the ______ conductor.

Select one of the following:

  • safety

  • hot

  • short

  • grounded

Explanation

Question 74 of 92

1

An electric motor is running on 120v. The current is measured to be 2A. How many ohms resistance is the motor?

Select one of the following:

  • 60

  • 118

  • 122

  • 240

Explanation

Question 75 of 92

1

A toaster is listed as 1560 Watts. When it is plugged into a 120 V circuit and starts to make toast, how many amperes will it draw?

Select one of the following:

  • 13

  • 1440

  • 1680

  • 187,200

Explanation

Question 76 of 92

1

A complete circuit is often referred to as a ______ circuit.

Select one of the following:

  • open

  • closed

  • grounded

  • shorted

Explanation

Question 77 of 92

1

How is track lighting load in residences calculated?

Select one of the following:

  • The method of calculation varies depending on the type of residence.

  • It is calculated at 60 watts per lighting head.

  • It is considered to be part of the general lighting load of 3 volt-amperes per square foot.

  • It is calculated at 150 volt-amperes per each two feet of track.

Explanation

Question 78 of 92

1

What determines the rating of a branch circuit?

Select one of the following:

  • Branch circuit wire size

  • Rating of over-current device

  • length of the circuit

  • total number of receptacles

Explanation

Question 79 of 92

1

The unit of resistance to current flow is the ______.

Select one of the following:

  • ampere

  • volt

  • watt

  • ohm

Explanation

Question 80 of 92

1

What type of circuit occurs when the conductors leading from and back to the power source become connected.

Select one of the following:

  • short

  • open

  • grounded

  • closed

Explanation

Question 81 of 92

1

What law states that the force of electrostatic attraction or repulsion is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them?

Select one of the following:

  • Volt's Law

  • Ohm's Law

  • Coulomb's Law

  • Ampere's Law

Explanation

Question 82 of 92

1

Fill the blank space to complete the text.

The Theory concerning current flow that is most widely accepted as being correct is the flow theory.

Explanation

Question 83 of 92

1

For continuous loads, the branch-circuit rating, the conductors, and the over-current device are required to be not less than ____ of the rating of the equipment.

Select one of the following:

  • 75

  • 100

  • 125

  • 150

Explanation

Question 84 of 92

1

Fill the blank space to complete the text.

Recptacles in unfinished basements must be protected.

Explanation

Question 85 of 92

1

If a Circuit is open, Current ______ flow.

Select one of the following:

  • will

  • will not

Explanation

Question 86 of 92

1

Approximately how many horsepower is an electric device listed as 3,000 watts?

Select one of the following:

  • 1/4

  • 1/6

  • 4

  • 6

Explanation

Question 87 of 92

1

The NEC requires outdoor receptacles to be _______.

Select one of the following:

  • AFCI

  • GFCI

  • on a dedicated circuit

  • GFCI protected and on a dedicated circuit.

Explanation

Question 88 of 92

1

The NEC defines a _____ as "the circuit conductors between the final over-current device protecting the circuit and the outlet(s)

Select one of the following:

  • branch circuit

  • receptacle outlet

  • feeder

  • service-entrance conductor

Explanation

Question 89 of 92

1

NEC 240.4(D) is referred to as the "small conductor rule" and tells us that the maximum over-current protection is 15 amperes for _______ copper conductors.

Select one of the following:

  • 8 AWG

  • 10 AWG

  • 12 AWG

  • 14 AWG

Explanation

Question 90 of 92

1

The general lighting load for a dwelling is based on ______.

Select one of the following:

  • square footage of the dwelling

  • total number of rooms

  • family lifestyle needs

  • city ordinance requirements

Explanation

Question 91 of 92

1

The amount of potential necessary to cause one coulomb to produce one joule of work is a _____.

Select one of the following:

  • watt

  • ohm

  • ampere

  • volt

Explanation

Question 92 of 92

1

What causes a wire to become warm when current flows through it?

Select one of the following:

  • voltage

  • divergence

  • resistance

  • amperage

Explanation

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