Reference: Architect Maila Quebec, uap

SAMONIAN DIGITAL LIBRARY

Dubai, United Arab Emirates

ITEM QUESTION & CHOICES ANSWER REMARK

1 Who is considered the Father of Electricity? A. Henry Williams B. William Gilbert C. Gilbert Morris B

2 What is the force that makes the electrons move in a circuit? A. MEF B. EMF C. EEF D. MBF B

3

A circuit line extensions of a feeder, fed through a panel board or cut-out, or from one distributing center

to another and having no other circuit connected to it between the two distributing centers. A sub-feeder

serves to distribute power from the main feeders to smaller local panel boards, called sub-panel boards.

A. Sub-Feeder Circuits B. Feeder Circuits C. Extend Circuits

A

4

What source of electricity used to supply emergency lighting circuits for hallways, stairways, exits and to

energize police and fire systems and certain types of signal systems? A. Generators B. Storage Batteries

C. Transformer D. Rotary ConvertersB

5These serve to control and protect the sub feeders and branch circuits. A. Branch Circuits B. Utilization

Equipments C. Utilization Branch Equipment D. Panel Boards and Sub-Panel Boards D

6The bulk of electrical energy utilized today is in the form of alternating current, including energy for power

and lighting. A. Direct Current Generators B. Alternators C. Transformer D. Rotary Converters B

7These furnish electrical energy for elevators, escalators, intercommunicating telephone systems, control

of signal systems and clock systems? A. Direct Current Generators B. Alternators C. Transformer A

8

A switch that automatically interrupts an electric circuit to prevent excess current from damaging

apparatus in the circuit or from causing a fire. A circuit breaker may be reclosed and reused without

replacement of any components. A. Circuit Breaker B. Service Switch C. Panel Switch D. Bus Breaker A

9The main disconnector for the entire electrical system of a building except for any emergency power

systems. A. Circuit Breaker B. Service Switch C. Panel Switch D. Bus Breaker B

10What is an electric machine for converting one voltage to another, from lower to higher of vice versa? A.

Generator B. Storage Batteries C. Transformer D. Rotary Converters C

11What is an electric machines for changing alternating current to direct current and vice versa? A.

Generator B. Storage Batteries C. Transformer D. Rotary Converters D

12A heavy conductor, usually in the form of a solid copper bar, used for collecting, carrying and distributing

large electric currents. A. Panel B. Service Panel C. Panel Switch D. Bus D

13

An electrical circuit may be defined as a complete conducting path carrying current from a source of

electricity to and through some electrical device or load and back to the source. The two wire circuit,

which is the most elementary of all wiring systems, consists of a live wire carrying the current to the

various power consuming devices in the circuit and a neutral or grounded wire which is the return wire

carrying the circuit back to the source of supply. A. Parallel circuit B. Series circuit C. Branch Circuit D.

Individual Branch Circuit

C

14

A horizontal single line diagram of the buildings electrical system from the incoming service to the utilization items at the end of the system where the major electrical components are shown as blocks or

rectangles. A. Riser Diagram B. Block Diagram C. Single Line Diagram D. Riser Block Diagram B

15

One in which the components are connected in tandem. All separate loads of the circuit carry the same

equal current and the total resistance, R, is the sum of the resistances around the circuit. A. Parallel

circuit B. Series circuit C. Branch Circuit D. Individual Branch Circuit B

16

A vertical line diagram of the major electrical components of the buildings electrical system presented

showing the spatial relations between components. A. Riser Diagram B. Block Diagram C. Single Line

Diagram D. Riser Block Diagram A

DIRECTION: Select the correct answer.

1 | 3

EXAMINEE: RATING: TOPIC CODE: EL 03-04ELECTRICAL SYSTEM

Reference: Architect Maila Quebec, uap

SAMONIAN DIGITAL LIBRARY

Dubai, United Arab Emirates

ITEM QUESTION & CHOICES ANSWER REMARK

17

One in which the components or loads are so arranged that the current divides between them. Each outlet

has a live wire connected to the current carrying wire of the circuit and also a neutral wire or grounded

wire connected to the return wire of the circuit. With this system, the total current flowing through the

circuit is the sum of the current flowing through each outlet. A. Parallel circuit B. Series circuit C. Branch

Circuit D. Individual Branch Circuit

A

18

A fabricated assembly of insulated conductors enclosed in flexible metal sheath. A. Metal Clad Cable

(Type MC) B. Armored Cable (Type AC) C. Mineral Insulated Cable (Type MI) D. Non-Metallic Sheathed

Cable (Type NM or NMC) B

19

For industries and large commercial buildings, the lighting and outlet loads are connected between any

phase leg and a neutral line. While machineries and other bigger loads are connected to the phase leg

only. A. Three Phase Electrical Systems B. Triple Phase Electrical Systems C. Two Phase Electrical

Systems D. Single Phase Electrical Systems

A

20Any of several conducting rods installed at the top of a structure and grounded to divert lightning away

from the structure. A. Lightning Rod B. Lightning Arrester C. Spark Gap D. Lighting Gap A

21

A factory assembled conductor/s insulated with a highly compressed refractory mineral insulation

enclosed in a liquid and gas tight continuous copper sheath. A. Metal Clad Cable (Type MC) B. Armored

Cable (Type AC) C. Mineral Insulated Cable (Type MI) D. Non-Metallic Sheathed Cable (Type NM or

NMC)

C

22

A device for protecting electric equipment from damage by lightning or other high-voltage currents, using

spark gaps to carry the current to the ground without passing through the device A. Lightning Rod B.

Lightning Arrester C. Spark Gap D. Lighting Gap B

23

Also known by the trade name ROMEX, is a factory assembly of two or more insulated conductors having

a moisture resistant, and flame retardant. A. Metal Clad Cable (Type MC) B. Armored Cable (Type AC) C.

Mineral Insulated Cable (Type MI) D. Non-Metallic Sheathed Cable (Type NM or NMC) D

24

A Circuit is a set of conductors which extends from the main switchboard to a distributing center (panel

board) with no other circuits connected to it between the source and the distributing center. A. Sub-feeder

Circuits B. Feeder Circuits C. Extend Circuits B

25

Insulator is to protect the enclosed conductors from mechanical injury and chemical damage, the

surroundings against fire hazard as a result of overheating or short circuiting of the enclosed conductors

and support the conductors. A. TRUE B. FALSE it should be conduit B

26

Its installation is much easier and quicker than that of rigid metal conduits. Unlike the rigid conduits which

come in short lengths of 10 ft. (3 M), flexible metal conduit wiring comes in length of 25 ft 250 ft (8 M 83 M) depending on the size of the conduit A. Armored Cable Wiring (Bx Wiring) B. Flexible Metal

Conduit Wiring C. Surface Metal Raceway Wiring D. None Of These

B

27

Heavy-wall steel conduits with an approximate thickness of 0.117 mm also called ______. A. Rigid Steel Conduits or RSC B. Intermediate Metal Conduit or IMC C. Electric Metal Tubing or EMT. D. Electric Insulated Tubing or EIT.

A

28

Consists of rubber or thermoplastic covered wire protected from injury to a certain extent from dampness

by one or two layers of flexible steel armor. A. Armored Cable Wiring (Bx Wiring) B. Flexible Metal

Conduit Wiring C. Surface Metal Raceway Wiring D. None Of These A

29Thin-wall steel conduits. A. Rigid Steel Conduits or RSC B. Intermediate Metal Conduit or IMC C. Electric Metal Tubing or EMT. D. Electric Insulated Tubing or EIT C

30

The wires are supported on a thin sheet steel casing. The raceway is installed exposed, being mounted

on the walls or ceiling. Metal raceways must be continuous from outlet to outlet or junction box, designed

especially for use with metal raceways. A. Armored Cable Wiring (Bx Wiring) B. Flexible Metal Conduit

Wiring C. Surface Metal Raceway Wiring D. None Of These

C

DIRECTION: Select the correct answer.

2 | 3

EXAMINEE: RATING: TOPIC CODE: EL 03-04ELECTRICAL SYSTEM

Reference: Architect Maila Quebec, uap

SAMONIAN DIGITAL LIBRARY

Dubai, United Arab Emirates

ITEM QUESTION & CHOICES ANSWER REMARK

31

RSCs and IMCs use the same fitting, called______________, and are threaded alike at the joints. EMTs

are not threaded but use set screw and pressure fitting and are not recommended for embedding in

concrete no permitted in hazardous areas. IMC yield a larger inside diameter (ID) for easier wire pulling

and is lighter than the RSC. Standard length of steel conduits is 3 M or 10 ft. A. Conduits B. Condulets C.

Steel Conduits D. None of these

B

32

A factory-assembled channel with conductors for one to four circuits permanently installed in the track

that will act as light duty (branch circuit) plug-in busways. A. Armored Cable Wiring (Bx Wiring) B.

Lighting Track C. Cable Tray / Open Raceway D. None Of These B

33

What channels or wiring accessories so designed for holding wires, cables and bus bars that are either

made of metal, plastic, or any insulating medium? A. Service Line B. Raceways C. Service Drop D. None

of these B

34

Continuous open support for approved cables. When used as a general wiring system, the cables must

be self-protected, jacketed types, type TC. A. Armored Cable Wiring (Bx Wiring) B. Lighting Track C.

Cable Tray / Open Raceway D. None Of These C

35

An assembly of primary switch-fuse-breaker, step-down transformer, meters, controls, bus bars and

secondary switchboard. It is used to supply power from a primary voltage line to any large facility. A.

Panelboards B. Unit Substations C. Switchboards B

36

___________is a point in the wiring system at which current is taken to supply utilization equipment. It

refers only to the box. __________ is the wiring device in which the utilization equipment (appliance) cord

is plugged into. A. Convenience Outlet or Attachment Cap B. Lighting Outlet & Receptacle Outlet C.

Convenience Outlet and Receptacle D. Outlet and Receptacle

D

37

Poles and transformer supports shall be located not more than _____ inside from the road right-of-way or

property line, and shall not obstruct the sidewalk, pedestrian path and/or the road drainage canal or

structure, existing or proposed. A. 300mm B. 200mm C. 500mm D. 900mm C

38

This is a free standing assembly of switches, fuses, and/or circuit breakers whose function normally is to

provide switching and feeder protection to a number of circuits connected to a main source. A.

Panelboards B. Unit Substations C. Switchboards C

39Clearances over roof. Conductors shall have a clearance of not less than ______ from the highest point of

roofs over which they pass with the following exceptions: A. 2 m B. 2.5 m C. 3 m D. 2.8 m B

40It is simply the box wherein the protective devises are housed from which the circuits and bus bars

terminate. A. Panelboards B. Unit Substations C. Switchboards A

41

Exception No. 1. Where the voltage between conductors does not exceed 300 volts and the roof has a

slope of not less than 100mm in 300mm, the clearance may not be less than ___. A. 1 m B. 2 m C. 3 m

D. 2.8 m A

DIRECTION: Select the correct answer.

3 | 3

EXAMINEE: RATING: TOPIC CODE: EL 03-04ELECTRICAL SYSTEM