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3rd year, First Semester > Building Utilities 2: Prelims > Flashcards

Building Utilities 2: Prelims Flashcards

1
Q

Sources of energy: 5

A

wind, water, nuclear, fossil fuel, solar (photovoltaic) and
geothermal

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2
Q

It converts solar energy directly into an electric current

A

Photovoltaic cells

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3
Q

Produce a rotary mechanical motion that drives electric
generators which in turn convert movement into electricity

A

Turbine

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4
Q

It is used to “step-up” (increase) the electrical power to very high
voltages transmitted by wires over long distances

A

Transformers

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5
Q

volt, ampere, watt are used in both metric and customary
outlets

A

Units of electricity

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6
Q

Unit of electrical pressure or potential
- Makes electricity flow through the wire

A

Volt

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7
Q

Term for flow of electricity

A

Current

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8
Q

unit used to measure the magnitude of an electric current
- The specific quantity of electrons passing a point in 1 second

A

Ampere

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9
Q

Unit used to measure the amount of power (energy) required to light
lamps, heat water, turn motors, etc…

A

Watts

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10
Q

Depends on both voltage and amperage

A

Wattage

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11
Q

Unit used to measure the consumption of electricity

A

Kilowatt-hour

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12
Q

– wood, glass, plastic;

A

good insulators

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13
Q

copper, aluminum, silver;

A

good
conductors

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14
Q

This material keeps the electricity from flowing where it is not wanted

A

Plastic

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15
Q

used to measure the amount of electrical resistance

A

Ohms

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16
Q

Power is supplied to a building through a

A

service entrance

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17
Q

The heavy wires that extend from a utility pole or an underground
source to the structure (or customer-owned post);

A

Drop

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18
Q

Wires are twisted into a?

A

Cable

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19
Q

Microsecond increases in voltage that are significantly above
the capacity of a wiring system or device to withstand

A

Surges

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20
Q

provided through:
▪ service entrance
▪ distribution panel
▪ lightning rod grounding

A

Surge protection

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21
Q

(GFCI)

A

ground fault circuit interrupters

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22
Q

Method of ensuring that excess voltage surges are
dissipated harmlessly into the earth;

A

Grounding

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23
Q

NEC

A

National Electrical Code

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24
Q

direct lightning strike voltage to the ground and away
from the building

A

Lightning rods

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25
Q

Electrical current is delivered throughout a building through a___

A

distribution
panel or service panel

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26
Q

From the distribution panel, electricity is routed to the rest of the building
through____

A

branch circuits

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27
Q

A circular path that electricity follows from the power supply source
to a light, appliance or other electrical device and back again to the power
source

A

Circuit

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28
Q

Each circuit is protected with a ___

A

circuit breaker

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29
Q

A device that opens (disconnects) a circuit when the current
exceeds a certain amount

A

Circuit breaker

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30
Q

When a breaker opens and power to the branch circuit is
disconnected.
Happens when the sum of the current drawn by the branch
circuit exceeds the rating of the main breaker

A

Trips

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31
Q

Installed in older homes instead of circuit breakers for the same
purpose but are replaced

A

Fuses

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32
Q

lighting, small appliance, individual or
dedicated

A

Types of branch circuits

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33
Q

T or F: “The NEC provides that 100 watts shall be the maximum load for each
household lighting outlet.”

A

True

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34
Q

Circuits that provide power to outlets whenever small appliances are likely to be connected

A

Small-appliance Circuits

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35
Q

T or F: “NEC provides that for each single receptacle shall be considered at
no less than 180 watts rating.”

A

True

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36
Q

When a motor starts, it needs n extra surge of power to bring it
to full speed called

A

Starting Load

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37
Q

Designed to serve a single large electrical appliance or device

A

Individual (dedicated) Circuits

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38
Q

Connected to the lighting outlets for the entire building
o Assign different lights in each room to different circuits, so when the
circuit trips, room will not be in total darkness

A

Lighting Circuits

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39
Q

located where there is a possibility for people to go ground
themselves and be shocked by the current flowing through their body to the
ground

A

GFCI (GROUND-FAULT CIRCUIT INTERRUPTER) receptacle

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40
Q

cut off the current at the outlet

A

GFCI (GROUND-FAULT CIRCUIT INTERRUPTER) receptacle

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41
Q

AWG

A

American Wire Guage

42
Q

thousands of circular mils, an old measurement
of wire gauge

A

✔MCM

43
Q

indicates a single conductor having flame-
retardant, moisture-resistant thermoplastic insulation

A

✔TW

44
Q

indicates a single conductor having flame-
retardant, moisture and heat-resistant thermoplastic insulation

A

✔THW

45
Q

standard unit of illumination, (also lx), metric system

A

Lux

46
Q

unit to measure light intensity, (candela), English system

A

Footcandle

47
Q

are rated by watts (energy used) and also by lumens (brightness)

A

Light bulbs

48
Q

shines directly on an object from a light source

A

Direct

49
Q

reflected from surfaces

A

Indirect

50
Q

spread evenly in all directions with the light source
(bulb) not visible

A

Diffused

51
Q

light shines mainly down as direct light with a small
portion directed upward as indirect light

A

Semi-direct

52
Q

more reflected, but some light shines directly

A

Semi-indirect

53
Q

reflect 94% of the light that strikes them

A

White surfaces

54
Q

reflect only 2%, remainder of the light is absorbed

A

Black surfaces

55
Q

act as secondary source of light when light is
reflected

A

Room surfaces

56
Q

Provides overall illumination and radiates comfortable level of
brightness for an entire room

A

General lighting

57
Q

Light directed to a specific area or located to support a particular task
– known as specific, local or task lighting

A

Specific lighting

58
Q

Used to create atmosphere and interest; Bright lights – stimulating
;Low levels of light – quieting

A

Decorative lighting

59
Q

Fixtures that are wired and built into a building’s hard-wired system

A

wired and built into a building’s hard-wired system

60
Q

either portable plug-in lamps or structural fixtures

A

Light fixtures

61
Q

used to direct a light source downward to
“wash” over wall surfaces

A

Soffit lighting

62
Q

directs light (usually fluorescent) onto ceiling
surfaces

A

Cove lighting

63
Q

directs light upward to the ceiling and down
over the wall or window treatment

A

Valance lighting

64
Q

directs all light downward, similar to soffit
except cornice lights are totally exposed at the bottom

A

Cornice lighting

65
Q

Used as a source of
general or decorative
lighting when attached
to a dimmer switch

A

Wall fixtures

66
Q

control the flow of electricity to outlets and to individual devices

A

Switches

67
Q

Meaning of HOT in electrical

A

electricity is available in the outlet at all times

68
Q

control fixtures, devices, or outlets

A

Single-pole switches

69
Q

control light from two different switches
(three wires and two switches)

A

Three-way switching circuit

70
Q

control fixtures from three
different locations; additional four-way switches maybe added to the
circuit to allow the lights to be controlled from any switch

A

Four-way switch & two three-way switches

71
Q

acts as step-up transformer and
opens the full 120V to the appliance

A

Magnetic controlled switch

72
Q

Allow the intensity of light fixtures to be controlled

A

Dimmer switches

73
Q

used to make light adjustments from a
wireless remote control

A

Integrated dimming switches

74
Q

can control many circuits

A

Wireless switches

75
Q

A point in a circuit where other devices can be connected (NEC)

A

Outlet

76
Q

A device (at an outlet box) to which any plug-in extension line,
appliance or device can be connected;

A

Receptacle

77
Q

used for small appliances and lamps;
available in single, double or multiple units

A

Convenience receptacles

78
Q

for the connection of lamp-holders, surface-mounted
fixtures, flush or recessed fixtures and all other types of lighting fixtures

A

Lighting outlets

79
Q

(dedicated circuits) the connection
point of a circuit for only one electrical device

A

Special-purpose receptacles

80
Q

for the connection of lamp-holders, surface-mounted
fixtures, flush or recessed fixtures and all other types of lighting fixtures

A

Special-purpose outlets & convenience outlets

81
Q

activate alarms or a call to the police when contact
points are separated and break a circuit.

A

Door & window sensors

82
Q

trigger an alarm when the noise of the breaking glass, voices or
forced entry is sensed.

A

Sonic detectors

83
Q

record movement when the path of an intruder interrupts the
lines of the sensor.

A

Motion detectors

84
Q

react to smoke or heat to activate an alarm and/or fire sprinkler
system & to notify the police & fire departments.

A

Fire detectors

85
Q

are programmed to sound an alarm (some
may also open windows) when levels exceed established limits.

A

Carbon monoxide & radon detectors

86
Q

detect leaks from appliances or furnace burners & shut-off
the gas line, open windows and sound an alarm.

A

Natural gas sensors

87
Q

sense water leakage and sound an alarm and notify a public utility
or service company.

A

Water sensors

88
Q

occupants with an alarm when an outside electrical
service, telephone, or cable line has been cut or disconnected.

A

Cut-line monitors alert

89
Q

alert residents in a remote location of the potential
danger of pipes freezing.

A

Low-temperature sensors

90
Q

link remote cameras (still/video) to a video-monitoring station.
Images can be recorded for future reference using a closed-circuit video
interfaced with a computer program. An alarm and a call to the policeman can
also be programmed.

A

Visual monitors

91
Q

(infrared) and
alarms activate when set levels are exceeded.

A

body heat sensors

92
Q

can activate alarms when light beams are blocked
between two points.

A

Light interruption sensors

93
Q

which is changed frequently, allows access to selected visitors
who possess the proper code.

A

visitor code,

94
Q

communications between entrances and other
locations including recorded ad synthesized voice responses to visitors.

A

Videophone intercom

95
Q

systems that support personal, business, fax and
internet services.

A

Integrated multiple phone

96
Q

allows web surfing on multiple
computers, smart TV’s, cellular phones and other devices simultaneously.

A

Internet sharing device

97
Q

that allows communication between multiple computers,
printers and scanners.

A

Networking

98
Q

Smart building system or home automation system

A

INTEGRATED SYSTEMS

99
Q

linked together into a single network
o Electronically connected to one or more preprogrammed devices
such as:
▪ Keypads
▪ Touch screens
▪ Remote controllers

A

Chips

100
Q

use light, not electronic, impulses to transmit
information; carry more information than copper; less subject to
magnetic interference

A

Fiber-optics

101
Q
A

3rd year, First Semester (13 decks)

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