問題一覧
1
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
2
What type of hand tools commonly used in boring of ½" diameter hole in panel board
Knock out Puncher and Adjustable Wrench
3
What is the minimum bending radius applied to ½", ¾" and 1"?
5 inches
4
When measuring load resistance, the ohmmeter is connected_
Parallel with the source
5
The actual power consumed in electrical system is expressed in
KiloWatt - hour(KW- Hr)
6
Who is the father of the electricity?
Dr. William Gilbert
7
What is the standard height of panel board?
1.50 meters above finish floor according to PEC
8
Part of the Auxiliary System that set the motion-trigger action individually for each camera.
Motion detection
9
What is the standard height of light switches?
1.20 meters above finish floor according to PEC
10
One objectives of preventive maintenance is
to keep the machines in good condition
11
What is the Ampacity of #8.0 sq.mm. THW wires?
50 amperes
12
Commonly used adhesive materials for joining of PVC conduit
PVC Solvent
13
The current is directly proportional to the voltage and inversely proportional to resistance.
Ohm's Law
14
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
15
How many marking should a rigid non-metallic conduit have?
1
16
When measuring load current, an ammeter is connected
In series with the load
17
What is the ampacity of # 5.5 sq. mm. stranded wires?
30 A
18
Before adding to or altering an installation, you must ensure that_
Safety precautions are followed
19
A measuring instruments used by electricians and refrigeration mechanics for measuring de current, dc/ac voltage and dc resistance/continuity.
Multimeter
20
What is the ampacity of # 2.0 sq. mm. stranded wires?
20 A
21
Before adding to or altering an installation, you must ensure that
Safety precaution are followed
22
The size of circuit breaker to be used in 40 A motor full load current is
100 AT
23
The minimum size of conduit commonly used in laying-out of Auxiliary Devices
¾" diameter
24
When measuring load current, the ammeter is connected
In series with the load
25
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
26
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
27
A point in the wiring system at which current is taken to supply the utilizatic equipment is called
Convenience outlet
28
An accessory which serves to complete a conduit system, such as bushings and access fitting.
Threaded connector
29
A circuit breaker is an electrical protective device which
Protects electrical equipment from current surges and on
30
What is the PEC requirement on standard height for outlet?
1 foot, 30 cm, 300 mm
31
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
32
An accessory which serves to complete a conduit system, such as bushings and access fitting.
Threaded connector
33
A part Auxiliary device that capture live events and save as video files
Recorder
34
What device is used for testing an armature for short circuit coils?
growler
35
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
36
A motor with rated full load current of 100 amperes can be wired with cable rated
250% × 100 Amps
37
What is the commonly used conduit in Service Entrance?
RSC/RMC
38
Before starting any installation work, alteration, repair of extension on any electrical system, what type of permit is needed?
Electrical permit
39
When measuring ballast resistance if it is defective o good, it is necessary that the source.
de-energized
40
Wnicn or the rollowing is an output aevice
Emergency Break Glass
41
What is the practical unit of electrical energy?
KWHr
42
In climbing ladder, you must position the ladder
30° from the vertical
43
The Auxiliary device of CCTV that monitor the motion daily.
Camera
44
The box use for convenience outlet is
Utility Box
45
Which of the following is the input device
All of the above
46
Personal Protective Equipment (PPE) helps
to reduce injuries
47
The technical term for the type THW wires mostly is industrial wirings is
Moisture and Heat resistant thermoplastic
48
The selection requirements for circuit breaker are
Kilo Ampere Interrupting Capacity, Ampere Trip and Ampere Frame
49
What type of switch is used to control one lamp from two locations?
three-way switch
50
What is the ampacity of # 3.5 sq. mm. stranded wires?
25A
51
What is the standard voltage in the Philippines?
220V and 60Hz
52
What is the types of fitting commonly used for exposed conduit support?
Conduit strap/Clamp
53
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
54
It is the connection between the grounded circuit conductor and the equipment grounding conductor at the service.
Grounding electrode conductor
55
Most of the required electrical parameters apply to an incandescent bulb are
Rated power and rated voltage
56
The 24 hours protection from home and commercial building to monitor and access the video any time anywhere on this device.
CCTV Camera
57
The material used in long length bus or lie to give alowance for thermal expansion is
Flexible braided copper plates
58
A diagram that shows the location and actual termination of auxiliary devices called
Wiring diagram
59
To rescue an electric shock victim, the first thing to do is to lift away live wires with
nonconductive materials
60
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.
61
When raceways are exposed to widely different temperatures it should
Sealed
62
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.
63
Locknut, bushing and connectors are called electrical_
Fittings
64
What is the maximum spacing allowed for convenience outlet in continuous wall?
3.6 meters
65
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
66
What is the fitting commonly used for tightening between the boxes the RSC conduit?
Straight Connector
67
What rating shall have a feeder conductor in relation to its protective device when used to general purpose?
equal or greater than protection rating
68
When circuit breaker is always tripping, most likely
there is an over current
69
When skinning a small wire, the insulation should be " pencil down" rather that cut squire to
Decrease danger of nicking the wire
70
Before adding to or altering an installation, you must ensure that
Safety precaution are followed
71
A mechanical connector that is crimped unto a conductor for both splice and termination is known as
Split bolt connector
72
When raceways are exposed to widely different temperatures it should be
Sealed
73
A live duplex wire can be de-energized quickly and safely by cutting
One-by - one using diagonal cutter
74
One most advantage of using rubber insulation tape in splice is
All of the above