問題一覧
1
There are sheet metal troughs with hinged or removable covers for housing and protecting electrical wires and cables and in which conductors are laid in place.
Wire ways
2
Most of the required electrical parameters apply to an incandescent bulb are
Rated power and rated voltage
3
When tightening a terminal screw connection, the end of the wire should pass around the screw in the same direction as the screw is turned so that
the wire will not turn off
4
A part providing an appropriate degree protection of equipment against contains external influences and defined degree of protection again contacts with live parts any direction.
Enclosure
5
Locknut, bushing and connectors are called electrical_
Fittings
6
Why is if necessary to use torque wrench in tightening bottled joints of copper bus bars inside bus ducts and bus ways?
To make sure the joints are well tightened
7
What is the commonly used conduit in Service Entrance?
RSC/RMC
8
What is the types of fitting commonly used for exposed conduit support?
Conduit strap/Clamp
9
When raceways are exposed to widely different temperatures it should be
Sealed
10
When raceways are exposed to widely different temperatures it should
Sealed
11
Before adding to or altering an installation, you must ensure that_
Safety precautions are followed
12
What will you do if the load schedule reflects a 20AT/2.0 sq.mm. Lighting Branc of hwhich breaker is over rated?
Look for the wiring layout and check groupings.
13
The size of circuit breaker to be used in 40 A motor full load current is
100 AT
14
The selection requirements for circuit breaker are
Kilo Ampere Interrupting Capacity, Ampere Trip and Ampere Frame
15
When measuring load current, the ammeter is connected
In series with the load
16
The material used in long length bus or lie to give alowance for thermal expansion is
Flexible braided copper plates
17
The current is directly proportional to the voltage and inversely proportional to resistance.
Ohm's Law
18
Before adding to or altering an installation, you must ensure that
Safety precaution are followed
19
What amount of current will be drawn by incandescent bulb connected to a 115-volt circuit if its resistance is 264.5 ohms?
0.43 amps.
20
Before adding to or altering an installation, you must ensure that
Safety precaution are followed
21
When measuring ballast resistance if it is defective o good, it is necessary that the source.
de-energized
22
A circuit breaker is an electrical protective device which
Protects electrical equipment from current surges and on
23
The 24 hours protection from home and commercial building to monitor and access the video any time anywhere on this device.
CCTV Camera
24
The Auxiliary device of CCTV that monitor the motion daily.
Camera
25
A part Auxiliary device that capture live events and save as video files
Recorder
26
The minimum size of conduit commonly used in laying-out of Auxiliary Devices
¾" diameter
27
An electricians should always have his tools in good working condition, the most important reason being is.
Defective tools can cause accidents or damage to equipment
28
What type of hand tools commonly used in boring of ½" diameter hole in panel board
Knock out Puncher and Adjustable Wrench
29
It is the connection between the grounded circuit conductor and the equipment grounding conductor at the service.
Grounding electrode conductor
30
What is the fitting commonly used for tightening between the boxes the RSC conduit?
Straight Connector
31
Part of the Auxiliary System that set the motion-trigger action individually for each camera.
Motion detection
32
A kind of diagram that is used in designing or troubleshooting electrical installation control equipment so arranged to facilitate the tracing of the circuit.
Schematic diagram
33
One most advantage of using rubber insulation tape in splice is
All of the above
34
The box use for convenience outlet is
Utility Box
35
A mechanical connector that is crimped unto a conductor for both splice and termination is known as
Split bolt connector
36
Commonly used adhesive materials for joining of PVC conduit
PVC Solvent
37
A live duplex wire can be de-energized quickly and safely by cutting
One-by - one using diagonal cutter
38
When measuring load current, an ammeter is connected
In series with the load
39
When measuring load resistance, the ohmmeter is connected_
Parallel with the source
40
What is the Ampacity of #8.0 sq.mm. THW wires?
50 amperes
41
Wnicn or the rollowing is an output aevice
Emergency Break Glass
42
The technical term for the type THW wires mostly is industrial wirings is
Moisture and Heat resistant thermoplastic
43
Which of the following is the input device
All of the above
44
When skinning a small wire, the insulation should be " pencil down" rather that cut squire to
Decrease danger of nicking the wire
45
A diagram that shows the location and actual termination of auxiliary devices called
Wiring diagram
46
Who is the father of the electricity?
Dr. William Gilbert
47
One objectives of preventive maintenance is
to keep the machines in good condition
48
When circuit breaker is always tripping, most likely
there is an over current
49
In climbing ladder, you must position the ladder
30° from the vertical
50
What is the practical unit of electrical energy?
KWHr
51
The actual power consumed in electrical system is expressed in
KiloWatt - hour(KW- Hr)
52
An electrician should consider all equipments live unless he definitely knows that they are not. The main reason of this practice is to avoid
personal injury
53
What is the minimum bending radius applied to ½", ¾" and 1"?
5 inches
54
A motor with rated full load current of 100 amperes can be wired with cable rated
250% × 100 Amps
55
Personal Protective Equipment (PPE) helps
to reduce injuries
56
Before starting any installation work, alteration, repair of extension on any electrical system, what type of permit is needed?
Electrical permit
57
The reason for grounding the frame of a portable electric hand tools is to:
prevent the frame of the tool from becoming alive-to-ground
58
What rating shall have a feeder conductor in relation to its protective device when used to general purpose?
equal or greater than protection rating
59
What is the PEC requirement on standard height for outlet?
1 foot, 30 cm, 300 mm
60
How many marking should a rigid non-metallic conduit have?
1
61
What type of switch is used to control one lamp from two locations?
three-way switch
62
What device is used for testing an armature for short circuit coils?
growler
63
A measuring instruments used by electricians and refrigeration mechanics for measuring de current, dc/ac voltage and dc resistance/continuity.
Multimeter
64
To rescue an electric shock victim, the first thing to do is to lift away live wires with
nonconductive materials
65
What is the maximum spacing allowed for convenience outlet in continuous wall?
3.6 meters
66
What is the standard voltage in the Philippines?
220V and 60Hz
67
What is the standard height of light switches?
1.20 meters above finish floor according to PEC
68
What is the standard height of panel board?
1.50 meters above finish floor according to PEC
69
A point in the wiring system at which current is taken to supply the utilizatic equipment is called
Convenience outlet
70
What is the ampacity of # 5.5 sq. mm. stranded wires?
30 A
71
What is the ampacity of # 3.5 sq. mm. stranded wires?
25A
72
What is the ampacity of # 2.0 sq. mm. stranded wires?
20 A
73
An accessory which serves to complete a conduit system, such as bushings and access fitting.
Threaded connector
74
An accessory which serves to complete a conduit system, such as bushings and access fitting.
Threaded connector