Deck 19: Specific Equipment

Question 1

Article 647 covers the installation and wiring of sensitive electronic equipment that is connected to a separately derived system operating at ____ volts line-to-line and 60 volts to ground.

A) 100
B) 112
C) 120
D) 180

Answer 1

C

Question 2

Each hoistway elevator pit shall have at least one ____-volt, single phase, 15- or 20-ampere duplex receptacle

A) 100
B) 120
C) 125
D) 140

Answer 2

C

Question 3

An electric vehicle supply equipment's coupling means shall be stored or located at a height of not less than ____ in. above the floor level for indoor locations and 24 in. above the grade level for outdoor locations.

A) 12
B) 14
C) 18
D) 24

Answer 3

C

Question 4

Individual office furnishings of the freestanding type, or groups of individual office furnishings that are electrically connected, are mechanically contiguous, and do not exceed 30 ft when assembled, shall be permitted to connect to the building's electrical system by means of a ____.

A) single flexible cord and plug
B) rigid raceway
C) surge protector and concealed wiring
D) dual flexible cable and panel board

Question 5

Electric signs and outline lighting systems shall be marked with the manufacturer's name, trademark or other identification, ____, and current rating.

A) input voltage
B) output wattage
C) potential lumens
D) average load

Question 6

Equipment used to combine and level-match a multiplicity of electronic signals, as from microphones, electronic instruments, and recorded audio is referred to as a(n) ____.

A) panel board
B) mixer
C) audio swapper
D) signal transformer

Question 7

Conductors in pipe organs shall have ____ insulation.

A) standard polymer
B) thermoplastic or thermosetting
C) thermoelastic or thermo-molded
D) hybrid plastic/polymer

Question 8

Circuit voltage of heating/air-conditioning equipment branch circuits located on the elevator car shall not exceed ____ volts.

A) 500
B) 600
C) 800
D) 1000

Question 9

A separately derived ____ with 60 volts on each of two ungrounded conductors to a grounded neutral conductor can be used to reduce objectionable noise in sensitive electronic equipment locations.

A) 110-volt, single-phase, 3-wire system
B) 115-volt, single-phase, 3-wire system
C) 120-volt, single-phase, 3-wire system
D) 125-volt, single-phase, 3-wire system

Question 10

Flexible metal conduit, ____ metal conduit, liquidtight flexible nonmetallic conduit, and flexible cords and cables are permitted wiring methods are permitted on the counterweight assembly and on the car assembly in elevators.

A) rigid sealed
B) flexible hybrid
C) liquidtight flexible
D) liquidtight rigid

Question 11

Branch circuits and feeders in a separately derived 60-volts to ground system shall be provided with a means to ____.

A) prevent current surges
B) simultaneously disconnect all ungrounded conductors
C) protect from lightening discharges
D) permit service access

Question 12

LFNC of ____ in. nominal trade size or larger, as defined in 356.2(2), can be installed in escalators or moving walkways in lengths greater than 6 ft.

A) 1/4
B) 3/8
C) 5/8
D) 3/4

Question 13

Neon tubing's length and design shall not cause a continuous overcurrent beyond the capacity of the transformer or ____.

A) surge protection
B) disconnecting means
C) electronic power supply
D) branch circuit

Question 14

Electric signs and outline lighting system equipment in wet locations, unless of the listed watertight type, shall be weatherproof and, if necessary, have ____ in accordance with 600.9(D)(1) through (3).

A) surge protection
B) lightening protection
C) a front-mounted disconnect
D) drain holes

Question 15

The minimum conductor size for traveling cables that feed lighting circuits is ____ AWG copper.

A) 14
B) 16
C) 18
D) 20

Question 16

Neon tubing secondary conductor(s) shall be supported within ____ in.of the electrode connection.

A) 4
B) 6
C) 12
D) 18

Question 17

A luminaire intended for installation in a pool or fountain structure's forming shell, where completely surrounded by water is referred to as ____.

A) a wet niche luminaire
B) aquatic luminaire
C) forming shell
D) packaged source

Question 18

A pipe organ should use a minimum of ____ AWG conductors for electronic signal circuits, and at least 26 AWG for electromagnetic valve supply.

A) 24
B) 26
C) 28
D) 30

Question 19

All ____ receptacle outlets used in technical applications shall be GFCI protected.

A) 15- and 20-ampere
B) 15- and 25-ampere
C) 15- and 30-ampere
D) 20- and 30-ampere

Question 20

The power source for a pipe organ shall be a transformer-type rectifier having a direct current (dc) potential of ____ volts or less.

A) 10
B) 20
C) 25
D) 30

Question 21

Unit heaters shall not be mounted over the pool or`within the area extending ____ ft horizontally from the inside walls of a pool.

A) 5
B) 6
C) 8
D) 9

Question 22

Unencapsulated structural reinforcing steel in pools shall be ____.

A) bonded together by steel tie wires or the equivalent
B) grounded via rigid wire cables to an earth ground
C) bonded using equipotential bonding
D) encased in corrosion-resistant materials

Question 23

Equipotential bonding required by 680.26 shall be installed to reduce ____ in the pool area.

A) power surges
B) shorting
C) load
D) voltage gradients

Question 24

A junction box for an underwater application shall be comprised of ____, brass, suitable plastic, or other approved corrosion-resistant material.

A) stainless steel
B) aluminum
C) tin
D) copper

Question 25

Where a permanently installed pool is installed, no fewer than one 125-volt 15- or 20-ampere receptacle on a general-purpose branch circuit shall be located a minimum of ____ ft, but no more than 20 ft, from the pool's inside wall.

A) 5
B) 6
C) 8
D) 12