ALE Building Utilities (Electrical)

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311 Terms

1

Ammeter

An instrument for measuring the rate of flow of electricity, usually expressed in amperes

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2

Amperage

. The current carrying capacity of a wire or cable, expressed in amperes

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3

Blackout Switch

On a theatre stage, a master switch that distinguishes all stage lights simultaneously.

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4

Feeder Line

"The portion of an electric wiring that extends beyond the final over current device protecting the circuit

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5

Cable Vault

"An underground structure used in pulling or splicing electric cables which are laid underground.

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6

Candlepower

The luminous intensity of a light source, expressed in candelas.

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7

Current

Flow of electricity in a circuit; the unit of measurement is the ampere.

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8

Direct Current

In an electric circuit, a current that flows in one direction only

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9

Grounding Wire

"In electric wiring a metal plate, water pipe, or other type of conductor buried in the earth in manner ensuring a good conductive path to the ground.

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10

Footcandle

A unit of illumination equal to 1 lumen per square foot.

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11

Electric current

A movement or flow of electrically charged particles, typically measured in amperes.

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12

appliances

What is a utilization equipment which is generally industrial built in?

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13

alternator

a generator of alternating current

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14

ammeter

device used to measure rate of flow of electricity

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15

capacitor

device for storing electric energy

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16

diffuser

What is a surface, material, device, or object that scatters light or sound from a source?

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17

rectifier

device used to transform AC to DC

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18

illumeter

device that indicates light intensity in Footcandle

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19

greenfield

What is a flexible armored conduit used to encase electrical wiring?

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20

regulator

controls the flow of current to the distribution elements

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21

entrance cap

cap that receives the service drop

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22

utility box

box used for maintaining light control devices

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23

flux

What is an electromagnetic force flowing between the positive and negative terminals?

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24

voltage

electromotive force

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25

phase

number of AC that flow in a conductor

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26

watt

rate or measure of power used or consumed

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27

rheostat

What is an electric device having a resistance which can be adjusted?

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28

regulator

controls the flow of current to the distribution elements

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29

ohmmeter

instrument used to measure the resistance of a conductor

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30

insulator

materials that resist the flow of electric current

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31

coulomb

What is the unit for quantity of electricity?

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32

ohm

unit of resistance

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33

volts

unit of electromotive force

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34

candela

unit of candlepower

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35

10 ft.

Standard length of an electrical metal conduit.

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36

Pvt. Automatic Branch Exchange

PABX or PBX means.

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37

Capacitor

Farad is the unit capacity of a ___.

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38

Power Panel

Another name for distribution panel.

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39

No. 12

Standard size of wire for a circuit line.

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40

No. 14

Standard size of wire for a switch line.

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41

Rectifier

"A device for converting alternating current to direct current."

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42

D.C. Generator

Another name for a Rectifier.

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43

Phase

"Interrelationship between value of voltage and current with the same frequency."

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44

5.5 sqmm

"Minimum wire size in square millimeter for a branch circuit with a 30 ampere rating using Type THW stranded copper conductor in a raceway."

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45

60 Cycles

"Standard frequency of power supplied by the local power utility company like Meralco."

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46

Service Drop

"The overhead service conductors from the last pole or other aerial support to and including splices, if any, connecting to the service entrance conductors at the building."

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47

Telecommunication System

The simplest type of building automation system.

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48

Impedance

Resistance in alternating current system.

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49

Resistance

The reciprocal of conductance.

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50

Busway

"A rigid metal housing for a group of heavy conductors insulated from each other and the enclosure, also called Busduct."

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51

Bus

"A heavy conductor, usually in the form of a solid copper bar, used for collecting, carrying, and distributing large electric currents, also called a busbar."

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52

Busway

"An approved assembly of insulated conductors with fitting and conductor terminations in completely enclosed ventilated protective metal housing where the assembly is designed to carry fault current and to withstand the magnetic forces of such current."

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53

Pull Box

"A box with a blank cover which serves the purpose of joining one different runs of raceways or cables and provided with sufficient space for connection and branching of the enclosed conductors."

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54

Riser Diagram

"This shows the vertical relationships of all panels, feeders, switches, switchboards, and major components are shown up to, but not including, branch circuiting, it is an electrical version of a vertical section taken through the building."

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55

Air Terminal

"In a lightning protection system, the combination of a metal rod and its brace or footing, on the upper part of a structure."

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56

Moisture resistant, in wet and dry location

TW in electrical wire specification means.

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57

Moisture and Heat Resistant- Cross-Linked Thermosetting"

XHHN in wire specification means.

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58

the reciprocal of ohm

Mho as used in electrical systems calculation is defined as _______.

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59

Watt

"A unit of mechanical power is horsepower. What is electrical power?"

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60

Nikola Tesla

"Who said these prophetic words: “Let the future tell the truth and evaluate each one according to his work and accomplishment. The present is theirs, the future for which I really worked for is mine.”?"

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61

Rigid metal conduit (RMC)

"A type of raceway specially constructed for the purpose of pulling in or the withdrawing of wires or cables after the conduit is in place."

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62

Heat resistant thermoplastic

"The trade name for an insulated conductor with type letter THHN is ______."

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63

All of these

"What is / are the advantage/s of a circuit breaker over a fuse?

  • a. It can act as a switch

  • b. Its position can be easily detected (close/open)

  • c. It can be used again after fault has been corrected

  • d. All of these"

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64

2-s3w and 1-s4w

"What switch combination may be used in order to control a lamp or group of lamps in three different locations?"

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65

Low resistance, high current

It characterizes short circuit

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66

Cable tray

"A unit or assembly units or sections and associated fittings forming a rigid structural system used to support cables."

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67

Silver

"Fusible material in a fuse may be made of any of the following except___."

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68

All of the above

"It affects the resistance of a conductor.

  • a. Length

  • b. Area

  • c. Temperature"

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69

Panelboard

It is also known as electric panel or load center.

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70

Conduit

"A cylindrical conduit or conductor, the wall thickness is sufficient to receive a standard pipe."

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71

metal clad cable (type MC)

"A factory assembly of one or more conductors, each individually insulated and enclosed in a metallic sheath of interlocking metal tape, or a smooth corrugated metallic tube."

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72

Current

It is analogous to pressure in water flow.

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73

All of these

"Alternating current is characterized as having _____.

  • a. Positive and negative polarity

  • b. Average value is zero c. Has frequency

  • d. All of these"

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74

Series circuit

"A circuit type where components are electrically connected end to end."

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75

Switch

The basic elements of an electric circuit are the following except

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76

Non metallic sheathed cable (type NM and NMC)

"A factory assembly of two or more insulated conductors having an outer sheath of moisture-resistant, flame retardant, non metallic material."

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77

Both a and b

"Cables are conductors that are ____.

a. Larger than wires

b. Stranded (no.6 AWG and larger)"

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78

Gold

"Which of the following metallic materials is considered as the best conductor of electricity?"

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79

Both a and b

"Example/s of conductors-on-insulator wiring is are ______.

  • a. Concealed knob and tube

  • b. Open wiring on insulators"

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80

Multi-outlet assembly

"A type of surface flush raceway designed to receive conductors and receptacles assembled in the field or in the factory."

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81

Transfer switch

"A type of switch used for transferring one or more load conductor connections from one power source to another."

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82

CIRCUIT BREAKER

The part of the cut out that is design to open or break an electrical current under an excessive load

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83

WATTS

Unit of power

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84

AMPERE

The unit used in the measure of the rate of flow of electricity

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85

TOWER OR FLATFORM

This is where an electric service conductor can be installed

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86

KNIFE SWITCH

A type of electric switch consisting of one or more movable copper blades which are hinged and which make contact with stationary forked contract jaws being forced between them

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87

TRANSFORMER VAULT

Provision for building with an expected electric load demand of 200KVA

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88

RECTIFIER

The conversion of alternating current (AC) to direct current (DC)

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89

RAPID START FLOURESCENT LAMP

A kind of flourescent lamp that does not use starter element

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90

JUNCTION BOX

An iron box or casing by which electrical conduit branches are formed

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91

5 STOREYS

A passenger elevator with a constant 24 hour service for residential condominum

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92

3.00 m

Minimum service drop of connection line above the ground and from the ground

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93

500 mm

Minimum distance of poles and transformer support located from the road right of way

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94

AIR CURTAIN

A vertical flow of air used to separate different function of spaces

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95

GOOSENECK

Original name of P-Trap

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96

DISTRIBUTION LINE

The main feed line of an electrical circuit to which branch circuits are connected

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97

1.20m

The minimum width of door in hospital housing unit

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98

PLUG IN TYPE

Another type of circuit breaker element other than bolt-on

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99

COPPER WIRE

The most practical conductor of electricity

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100

RACEWAY

A channel system in carrying electrical wire

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