Question 1

A single-phase feeder (or branch circuit) conductor will have a total resistance ____ that of one conductor.

Accepted Answer

A)  half 
B)  twice 
C)  three times 
D)  four times 
A)  half 
B)  twice 
C)  three times 
D)  four times B

Question 2

____ is the maximum number of disconnects per service grouped in any one location.

Accepted Answer

A)  Two 
B)  Three 
C)  Six 
D)  Nine 
A)  Two 
B)  Three 
C)  Six 
D)  Nine C

Question 3

Conductors must have ____ and sufficient ampacity to carry the current for the load as calculated.

Accepted Answer

A)  sufficient length 
B)  adequate insulation 
C)  adequate mechanical strength 
D)  definitive markings 
A)  sufficient length 
B)  adequate insulation 
C)  adequate mechanical strength 
D)  definitive markings C

Question 4

A drip loop's lowest point has a minimum vertical clearance of ____ ft.

Accepted Answer

A)  4 
B)  6 
C)  8 
D)  10 
A)  4 
B)  6 
C)  8 
D)  10

Question 5

A minimum of ____ wall switch-controlled lighting outlet(s) is (are) required for dwelling hallways.

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
A)  one 
B)  two 
C)  three 
D)  four

Question 6

General receptacle installation provisions for multifamily dwellings are almost identical to those for ____.

Accepted Answer

A)  commercial properties 
B)  garage facilities 
C)  dual family dwellings 
D)  one family dwellings 
A)  commercial properties 
B)  garage facilities 
C)  dual family dwellings 
D)  one family dwellings

Question 7

Dwelling-unit branch circuits shall supply only loads within, or associated only with, ____.

Accepted Answer

A)  dwellings in that vertical line 
B)  a parallel unit 
C)  other branch circuits 
D)  that dwelling unit 
A)  dwellings in that vertical line 
B)  a parallel unit 
C)  other branch circuits 
D)  that dwelling unit

Question 8

All electric equipment must be ____ to allow ready and safe equipment operation and maintenance.

Accepted Answer

A)  externally grounded 
B)  surrounded by sufficient unobstructed space 
C)  enclosed within a metal cabinet 
D)  surrounded by at least 2 ft of ventilation space 
A)  externally grounded 
B)  surrounded by sufficient unobstructed space 
C)  enclosed within a metal cabinet 
D)  surrounded by at least 2 ft of ventilation space

Question 9

Skin effect and induction change the resistance in alternating-current (ac) circuits, therefore resistance of a conductor is ____.

Accepted Answer

A)  slightly lower in an ac circuit 
B)  reciprocally lower in a dc circuit 
C)  slightly higher in an ac circuit 
D)  reciprocally higher in a dc circuit 
A)  slightly lower in an ac circuit 
B)  reciprocally lower in a dc circuit 
C)  slightly higher in an ac circuit 
D)  reciprocally higher in a dc circuit

Question 10

Voltage drop in a single-phase circuit can also be found using the formula ____.

Accepted Answer

A)  Voltage drop =R x L x I/2 
B)  Voltage drop = 2.46 x R x L x I 
C)  Voltage drop = 2 x R x L x I 
D)  Voltage drop = K x L/I 
A)  Voltage drop =R x L x I/2 
B)  Voltage drop = 2.46 x R x L x I 
C)  Voltage drop = 2 x R x L x I 
D)  Voltage drop = K x L/I

Question 11

A multifamily dwelling is a building containing ____ dwelling units.

Accepted Answer

A)  one or more 
B)  two or more 
C)  three or more 
D)  four or more 
A)  one or more 
B)  two or more 
C)  three or more 
D)  four or more

Question 12

The vertical clearance above roof level must be maintained for a distance of at least ____ ft from all edges of the roof.

Accepted Answer

A)  3 
B)  4 
C)  6 
D)  8 
A)  3 
B)  4 
C)  6 
D)  8

Question 13

Each occupant must have ready access to ____ protecting the conductors supplying that occupancy.

Accepted Answer

A)  primary feeders 
B)  all overcurrent devices 
C)  panel boxes 
D)  service laterals 
A)  primary feeders 
B)  all overcurrent devices 
C)  panel boxes 
D)  service laterals

Question 14

Service conductors supplying a building (or other structure) shall not ____.

Accepted Answer

A)  terminate in a panel 
B)  be enclosed in a six-gang enclosure 
C)  pass through the interior of another building 
D)  have less than two disconnects 
A)  terminate in a panel 
B)  be enclosed in a six-gang enclosure 
C)  pass through the interior of another building 
D)  have less than two disconnects

Question 15

The higher the resistance through a conductor, the ____.

Accepted Answer

A)  smaller the voltage drop 
B)  higher the voltage drop 
C)  the more stable the current 
D)  more neutral the offset 
A)  smaller the voltage drop 
B)  higher the voltage drop 
C)  the more stable the current 
D)  more neutral the offset

Question 16

All 125-volt, single-phase, 15- and 20-ampere dwelling unit outdoor receptacles must have ____.

Accepted Answer

A)  separate circuit breakers 
B)  interior grounding 
C)  GFCI protection 
D)  exterior grounding 
A)  separate circuit breakers 
B)  interior grounding 
C)  GFCI protection 
D)  exterior grounding

Question 17

On long runs, it may be necessary to ____ to compensate for voltage drop.

Accepted Answer

A)  decrease the branch circuit length 
B)  apply an approved voltage amplifier 
C)  boost supply influx 
D)  increase the branch-circuit conductor's size 
A)  decrease the branch circuit length 
B)  apply an approved voltage amplifier 
C)  boost supply influx 
D)  increase the branch-circuit conductor's size

Question 18

The maximum distance to any receptacle, measured horizontally along the wall line, is ____ in.

Accepted Answer

A)  6 
B)  12 
C)  18 
D)  24 
A)  6 
B)  12 
C)  18 
D)  24

Question 19

Kitchen receptacles not serving countertops (such as receptacles behind refrigerators) ____ unless they are installed within 6 ft of the outside edge of the sink.

Accepted Answer

A)  must be on a separate branch circuit 
B)  require a dual phase leader 
C)  do not require GFCI protection 
D)  are not counted towards total load 
A)  must be on a separate branch circuit 
B)  require a dual phase leader 
C)  do not require GFCI protection 
D)  are not counted towards total load

Question 20

The conductor voltage that is dropped is a percentage of the source voltage and can be calculated by ____.

Accepted Answer

A)  multiplying voltage drop by the source voltage 
B)  adding voltage drop to the source voltage 
C)  subtracting voltage drop from the source voltage 
D)  dividing voltage drop by the source voltage 
A)  multiplying voltage drop by the source voltage 
B)  adding voltage drop to the source voltage 
C)  subtracting voltage drop from the source voltage 
D)  dividing voltage drop by the source voltage

A single-phase feeder (or branch circuit) conductor will have a total resistance ____ that of one conductor.

____ is the maximum number of disconnects per service grouped in any one location.

Conductors must have ____ and sufficient ampacity to carry the current for the load as calculated.

A drip loop's lowest point has a minimum vertical clearance of ____ ft.

A minimum of ____ wall switch-controlled lighting outlet(s) is (are) required for dwelling hallways.

General receptacle installation provisions for multifamily dwellings are almost identical to those for ____.

Dwelling-unit branch circuits shall supply only loads within, or associated only with, ____.

All electric equipment must be ____ to allow ready and safe equipment operation and maintenance.

Skin effect and induction change the resistance in alternating-current (ac) circuits, therefore resistance of a conductor is ____.

Voltage drop in a single-phase circuit can also be found using the formula ____.

A multifamily dwelling is a building containing ____ dwelling units.

The vertical clearance above roof level must be maintained for a distance of at least ____ ft from all edges of the roof.

Each occupant must have ready access to ____ protecting the conductors supplying that occupancy.

Service conductors supplying a building (or other structure) shall not ____.

The higher the resistance through a conductor, the ____.

All 125-volt, single-phase, 15- and 20-ampere dwelling unit outdoor receptacles must have ____.

On long runs, it may be necessary to ____ to compensate for voltage drop.

The maximum distance to any receptacle, measured horizontally along the wall line, is ____ in.

Kitchen receptacles not serving countertops (such as receptacles behind refrigerators) ____ unless they are installed within 6 ft of the outside edge of the sink.

The conductor voltage that is dropped is a percentage of the source voltage and can be calculated by ____.

Introduction to the National Electrical Code

Definitions

Boxes and Enclosures

Cables

Raceways and Conductors

General Provisions

Specific Provisions

Load Calculations

Services and Electrical Equipment

Load Calculations

General Provisions

Nondwelling Load Calculations

Services, Feeders, and Equipment

Hazardous Classified Locations

Health Care

Industrial Locations

Special Occupancies

Specific Equipment

Filters

Exam 10: Comprehensive Provisions

A single-phase feeder (or branch circuit) conductor will have a total resistance ____ that of one conductor.

____ is the maximum number of disconnects per service grouped in any one location.

Conductors must have ____ and sufficient ampacity to carry the current for the load as calculated.

A drip loop's lowest point has a minimum vertical clearance of ____ ft.

A minimum of ____ wall switch-controlled lighting outlet(s) is (are) required for dwelling hallways.

General receptacle installation provisions for multifamily dwellings are almost identical to those for ____.

Dwelling-unit branch circuits shall supply only loads within, or associated only with, ____.

All electric equipment must be ____ to allow ready and safe equipment operation and maintenance.

Skin effect and induction change the resistance in alternating-current (ac) circuits, therefore resistance of a conductor is ____.

Voltage drop in a single-phase circuit can also be found using the formula ____.

A multifamily dwelling is a building containing ____ dwelling units.

The vertical clearance above roof level must be maintained for a distance of at least ____ ft from all edges of the roof.

Each occupant must have ready access to ____ protecting the conductors supplying that occupancy.

Service conductors supplying a building (or other structure) shall not ____.

The higher the resistance through a conductor, the ____.

All 125-volt, single-phase, 15- and 20-ampere dwelling unit outdoor receptacles must have ____.

On long runs, it may be necessary to ____ to compensate for voltage drop.

The maximum distance to any receptacle, measured horizontally along the wall line, is ____ in.

Kitchen receptacles not serving countertops (such as receptacles behind refrigerators) ____ unless they are installed within 6 ft of the outside edge of the sink.

The conductor voltage that is dropped is a percentage of the source voltage and can be calculated by ____.

Introduction to the National Electrical Code

Definitions

Boxes and Enclosures

Cables

Raceways and Conductors

General Provisions

Specific Provisions

Load Calculations

Services and Electrical Equipment

Load Calculations

General Provisions

Nondwelling Load Calculations

Services, Feeders, and Equipment

Hazardous Classified Locations

Health Care

Industrial Locations

Special Occupancies

Specific Equipment

Filters