Lv Test 1

Front 1

Plans and specifications require critical review by the:

Back 1

- owner to check all the subcontractors

- owner to check all the material suppliers

- contractor and owner to establish all the payment schedules

- contractor and owner to establish an agree ment on the work descriptions

Front 2

How much start up capital is needed to start a new contracting business?

Back 2

$ 1,000.

$2,500.

$5,000.

$12,000.

Hint 2

$2,500.

Front 3

To whom should a Misc-1099 be sent?

Back 3

- to all corporations receiving mor e t han $600 during a cale ndar year

- to all employees, regardless of how m uch t hey earnto all employees earning over $600 during a calendar yearto a subcont ractor earning over $600 during a cale ndar year

Front 4

What is the correct way to use a roto- or hammer -drill?

Back 4

slow speed with light pressure
fast speed with light pressure
slow speed with fim1 pressure
fast speed with as much pressure as you can manage

Hint 4

slow speed with firm pressure

Front 5

What minimum thickness of plywood is recommended for phone room
backboards?

Back 5

3/8"
1/2"
3/4"
7 /8"

Hint 5

3/4"

Front 6

What is the minimum bending radius for fiber optic cables?

Back 6

2 times the cable diameter
10 times the cable diameter
20 times the cable diameter
40 times the cable diameter

Hint 6

20 times the cable diameter

Front 7

What DC voltage should you set a megger to when testing the insulation of a wire?

Back 7

the same as the circuit voltage
slightly less than the normal peak AC
the same as voltage rating of the insulation
a slightly higher DC voltage than the AC peak voltage.

Hint 7

a slightly higher DC voltage than the AC peak voltage.

Front 8

When measuring conduit for two 90° bends, you should:

Back 8

add the back-to-back overshoot to the desired length
subtract the back-to-back overshoot to the desired length
divide the desired length by the back-to-back overshoot
divide the back-to-back overshoot by the desired length

Hint 8

add the back-to-back overshoot to the desired length

Front 9

Which of the following standards covers fire alarms?

Back 9

NEC770
NEC650
TlA/ElA-607
NFPA 72

Hint 9

NFPA 72

Front 10

What is the most practical alternative for running conductors between floors of an existing building?

Back 10

conduit
sleeve
protective insulating material around conductors
run along the outside

Hint 10

conduit

Front 11

When designing and drawing a low voltage system:

Back 11

draw on the existing electrical plan
draw on new plans
present as a list, rather than diagram
use a different color

Hint 11

draw on new plans

Front 12

Two technicians are installing a data cable on one end.

You connect the tracer at the office and the other at the block, but you do not get a signal. What should you conclude?

Back 12

there is a short in the cable
you connected the cable wrong
you used the wrong cable
cable is cut

Hint 12

you used the wrong cable

Front 13

Of the following, which is the strongest part of your body?

Back 13

lower back
lower side
mid chest
upper back, near the shoulders

Hint 13

upper back, near the shoulders

Front 14

Please refer to the drawing of a spade bit below. Which of the following angles, if ithere, should be maintained when sharpening the bit to get maximum usage

Back 14

Maintain both
Maintain one

Hint 14

Maintain Both

Front 15

For a chime/bell system in a residence, it is standard practice to install:

Back 15

one pushbutton for the whole system
one pushbutton at each door
two push buttons for the whole system
three pushbuttons for the whole system

Hint 15

one pushbutton at each door

Front 16

What are the general wiring requirements for a 70-volt background-music sound system?

Back 16

one pair of No. 14 AWG wires
one pair of No. 16 AWG wires
one pair of No. 18 AWG wires
one pair of No. 22 AWG wires

Hint 16

one pair of No. 22 AWG wires

Front 17

How long can a single run of multimode fiber typically be?

Back 17

100 Ill
200m
500m
2km

Hint 17

500m

Front 18

Which would you use to clear or check conduit before pulling wire through

Back 18

mandrel
auger
fish tape
Roto-Rooter

Hint 18

mandrel

Front 19

What type of switch is normally used to control a remote control relay?

Back 19

Multi-pole pushbutton
Two-position rocker
Double pole, single throw, momentary (DPST)
Single pole, double throw (SPOT)

Hint 19

Single pole, double throw (SPOT)

Front 20

What is the proper way to store tools at a job site?

Back 20

tools should not be left at the job site
any cover to keep tools from getting wet is adequate
power tools left at the job site must be double-locked
power-actuated tools must be kept in a locked container whenever
unattended

Hint 20

power-actuated tools must be kept in a locked container whenever
unattended

Front 21

What section of the NEC covers communication circuits?

Back 21

650
770
800
900

Hint 21

800

Front 22

What does an octagon with a number in it signify on an electrical plan diagram?

Back 22

clock system component, with number indicating the component type
plan diagram cross-reference
connection to another point on diagram
low voltage switch with pilot light

Hint 22

clock system component, with number indicating the component type

Front 23

What is the typical maximum pulling tension for indoor fiber optic cables?

Back 23

2Sibs
50lbs
100lbs
600lbs

Hint 23

100 Lbs

Front 24

For low-voltage wiring, use rigid metal conduit to go through ______ for fire protection.

Back 24

wood joists
drywall
concrete walls
plaster walls

Hint 24

concrete walls

Front 25

In what range of voltages does a Megger operate?

Back 25

0-250
200-600
500- 1000
500-5000

Hint 25

500- 5000

Front 26

Where does the blue wire go in the low-voltage system?

Back 26

to a switch
to a relay
to a switch and a relay
to the 120-V supply

Hint 26

to a relay

Front 27

According to NFPA standards, when installing a fire-alarm panel and other
devices attached to the panel:

Back 27

all components must be purchased at the same time
all devices being attached must be UL-approved for the panel
all devices must be approved by the authority having jurisdiction or listed
for use with the panel
any suitable device, equivalent to a listed device, may be used

Hint 27

all devices must be approved by the authority having jurisdiction or listed
for use with the panel

Front 28

What is the maximum length of a run of single mode fiber?

Back 28

200 m
500 m
20 km
80 km

Hint 28

80km

Front 29

How do you first test fiber?

Back 29

OTOR
HeNe or LEO laser (visible light)
mode stripper
mandrel

Hint 29

HeNe or LED laser (visible light)

Front 30

What tool would you use to check that a pipe is adequately grounded?

Back 30

Megger
Wiggy
Ammeter
Ouija board

Hint 30

Megger

Front 31

You must use conduit when running wiring through:

Back 31

cement
drywall
wood timbers
plaster

Hint 31

Cement

Front 32

What tool would you use to notch wooden studs, floor joists, etc., for the passage of conduit?

Back 32

drill
hacksaw
wood chisel
keyhole saw

Hint 32

wood chisel
NOTCH

Front 33

What type of light pulses travel in singlemode fiber optic cables?

Back 33

low order only
high order only
both high and low order
digital light

Hint 33

low order only

Front 34

When using a keyhole saw, you should use:

Back 34

very light pressure
medium pressure
heavy pressure
reverse pressure

Hint 34

very light pressure

Front 35

You insert telephone line tester into a wall jack so the number 2 is opposite the stepped side of the j ack. The yellow light goes on. This tells you…

Back 35

the jack is wired correctly
the polarity is reversed in line 1
the polarity is normal in line 2
there is AC power on the line

Hint 35

there is AC power on the line

Front 36

A device has a resistance of 12 ohms and draws 3 amps. According to Ohm's Law, what voltage should be supplied?

Back 36

3V
6V
36 v
120 v

Hint 36

36V

Front 37

Conductor length and conductor size are both proportionally related to:

Back 37

resistance
impedance
capacitance
attenuation

Hint 37

Resistance

Front 38

What is the current in this circuit?

Back 38

2.1 amps
4.0 amps
7.0 amps
12.0 amps

Hint 38

12.0 amps

Front 39

What does
DCV
stand
for

Back 39

downward connected var iable
directly connected valve
direct cable voltage
direct current v oltage

Hint 39

direct current voltage

Front 40

What material would you drill with a standard high speed steel drill bit?

Back 40

sheet metal
masonry
tile
wood

Hint 40

sheet metal (Steel Bit)
<>
masonry (Carbine)
tile (Diamond)
wood (spade)

Front 41

If a phone system is ringing on the main line, what is the color of the ring wire?

Back 41

green
yellow
red
black

Hint 41

Red (1st RING)
Green (1st TIP)
<>
Yellow (2ndRING)
Black (2ndTIP)
White (3rd Ring)
Blue (3rd TIP)

Front 42

Bending conduit is best done with a:

Back 42

field hickey
field hockey
field hooey
finial

Hint 42

field hickey

Front 43

According to NFPA 71, a central station must have at least ______________ person(s) to
assure immediate attention to fire-alarm signals received.

Back 43

1
2
3
The number doesn't matter.

Hint 43

2

Front 44

In an local antenna system, everything after channel 14 and up is called:

Back 44

VHF
UHF
mid high
super high

Hint 44

UHF (Ultra High Frequency)
<>
VHF (Very High Frequency)

Front 45

How do you measure the length of fiber on a spool?

Back 45

OTOR
ruler
mechanical reel
count the tun1s around the spool

Hint 45

OTDR (optical time-domain reflectometer)

Front 46

So und system cables are allowed to fill a raceway to _ _______of its capacity?

Back 46

100%
90%
750/o
60%

Hint 46

75%

Front 47

Please refer to the diagrams of three different screwdrivers shown below. Which of the following, if any, is an "electrician's tip" or "cabinet tip" screwdriver?

Back 47

figure A
figure B
figure C
none of the above

Hint 47

figure C

Front 48

According to NFPA standard s, if any work is begun on the alarm panel of a central station, you must:

Back 48

first test the contact closures
notify the alarm company in advance
test all devices on the circuits
restore the panel to normal operation as soon as possible.

Hint 48

restore the panel to normal operation as soon as possible.

Front 49

How many wires does a typical 66-block hold?

Back 49

25
so
66
100

Hint 49

100

Front 50

What color are 568SC connectors and adapters for singlemode fiber?

Back 50

red
green
beige
blue

Hint 50

Blue

Front 51

Which bit is best for drilling deep holes?

Back 51

single-twist bit
double-twist bit
masonry
none of the above

Hint 51

single-twist bit

Front 52

How should you install vertical cables in a multistory building?

Back 52

start at the top and pull down, then tie from the bottom up
start at the top and pull down, then tie from the top down
start at the bottom and pull up, then from the tie bottom up
start at the bottom and pull up, then tie from the top down

Hint 52

start at the top and pull down, then tie from the top down

Front 53

What seismic zone(s) are in California?

Back 53

1
2
3
3&4

Hint 53

3 & 4

Front 54

What is the maximum pulling tension for CAT 5 cables?

Back 54

25
50
100
600lbs

Hint 54

100?

Front 55

What type of light pulses travel in multi mode fiber optic cables?

Back 55

low order only
high order only
both high and low order
digital light

Hint 55

both high and low order
<>
Low Order Only (SINGLE MODE)

Front 56

If you have a 120-V, 20-A circuit on which three 150-W incandescent bulbs, one
250-W television, and one 45-W VCR are installed, can you add a 1200-W heater
without overloading the circuit?

Back 56

No.
Yes. The current will be 6.4 amps.
Yes. The current will be 16.2 amps.
Yes. The current will be 18.9 amps.

Hint 56

Yes. The current will be 16.2 amps.

Front 57

Bridge clips are used:

Back 57

to bridge and ground a punch panel
to bridge and ground a 110-block
to bridge two sides of a parallel-connected 66M 150 block
for grounding metal conduit

Hint 57

to bridge two sides of a parallel-connected 66M1SO block

Front 58

What is the maximum number of jacks that can be installed on a single-gang faceplate?

Back 58

2
4
6
8

Hint 58

6

Front 59

When do you use singlemode fiber?

Back 59

local distance
long distance
low bandwidth
when low cost is a priority

Hint 59

long distance

Front 60

If you are installing a step-down transformer in a low voltage remote control system, which connections are required to be inside an enclosure?

Back 60

All class 1 and 2 connections
The secondary transformer connections
Only the high voltage (power wiring) connections
Both the primary and secondary connections

Hint 60

Only the high voltage (power wiring) connections

Front 61

What does CATV stand for?

Back 61

Community Antenna Television
Community Access Television
Common Attenuation Television
Common Access Television Vendor

Hint 61

Community Antenna Television

Front 62

For the stepdown transformer shown, what is the voltage induced in the
secondary? 10 turns 10 v | 5 turns ?v

Back 62

3V
4V
5V
6V

Hint 62

5V

Front 63

How do you test a short?

Back 63

voltmeter
ohmmeter
wattmeter
an1n1eter

Hint 63

ohmmeter

Front 64

How many quarter bends are allowed in a single run of conduit?

Back 64

2
4
6
8

Hint 64

4

Front 65

You are working at a jobsite and discover that the material you are working on contains more than .10% asbestos. What should you do?

Back 65

Use a dust mask
Spray water on the area before continuing work.
Report the condition to the Chief of DOSH.
Report the fact to the building owner within 7 days.

Hint 65

Report the condition to the Chief of DOSH.

Front 66

How far into a building can a flooded cable be run before it must be terminated?

Back 66

5 feet
10 feet
20 feet
50 feet

Hint 66

50 feet

Front 67

What type of low-voltage cable is required for use in a ceiling used for air handling?

Back 67

fiber-optic
shielded
PVC-jacketed
plenum-rated cable

Hint 67

plenum-rated cable

Front 68

What might you use to cut flexible metal conduit or liquid tight flex?

Back 68

a hacksaw
a pipe cutter
a hickey
a keyhole saw

Hint 68

Hacksaw

Front 69

Saber saws are designed to cut on the:

Back 69

upstroke
downstroke
upstroke and downstroke
sidestroke

Hint 69

Upstroke

Front 70

On Cat 5 cables, what color is the inside pair of wires (pins 4 & 5)?

Back 70

orange
green
brown
blue

Hint 70

Blue

Front 71

What co lor are 568SC connectors and adapters for multimode fiber?

Back 71

red
green
beige
blue

Hint 71

Beige
<>
Single Mode = Blue

Front 72

Hacksaws are designed to cut on the:

Back 72

upstroke
downstroke
upstroke and downstroke
sidestroke

Hint 72

Downstroke

Front 73

In which of the following tasks does a hacksaw perform least well?

Back 73

cutting flexible conduit
cutting armored cable (BX)
cutting liquid tight
cutting rigid metal conduit

Hint 73

cutting rigid metal conduit

Front 74

What is the minimum height of a guardrail?

Back 74

24"
36"
42"
48"

Hint 74

42"

Front 75

What does " LAN" stand for?

Back 75

Local Access Network
Long Access Network
Local Area Network
Laser Array Node

Hint 75

Local Area Network

Front 76

What material should you never drill with a standard high speed steel drill bit?

Back 76

sheet metal
masonry
vinyl tile
wood

Hint 76

Masonry

Front 77

Which connector is most commonly used for data processing?

Back 77

RJ 11
RJ 25
RJ 14
RJ 45

Hint 77

RJ 45

Front 78

Why Is a conduit bender the best tool to use to bend EMT?

Back 78

it produces a perfect bend
it's easier to pull than a hickey
it keeps the interior volume of the pipe unchanged
it's more portable

Hint 78

it keeps the interior volume of the pipe unchanged

Front 79

Which is the most common type of cable for data?

Back 79

CAT 1
CAT 4
CAT 5
CAT 6

Hint 79

CAT 5

Front 80

A Low-Voltage Systems Contractor can install equipment carrying a maximum
of:

Back 80

91 volts
110 volts
300 volts
600 volts

Hint 80

91 volts

Front 81

What does ACV stand for?

Back 81

accurate voltage
acute concussion victin1
alterative conductor voltage
alternating current voltage

Hint 81

alternating current voltage

Front 82

Which of the following tools, once worn, is commonly discarded rather than sharpened?

Back 82

standard screwdriver
Phillips-head screwdriver
drill bit
chisel

Hint 82

Phillips-head screwdriver

Front 83

What is the most common size of fiber optic cable?

Back 83

50/125
62.5/125
85/125
100/140

Hint 83

62.5/125

Front 84

You insert telephone line tester into a wall jack so the number 2 is toward the stepped side of the jack. The red light goes on. This tells you:

Back 84

the jack is wired correctly
the polarity is reversed in line 1
the polarity is normal in line 2
there is AC power on the line

Hint 84

the polarity is reversed in line 1

Front 85

What would you generally use to cut EMT?

Back 85

a hacksaw
a pipe cutter
a hickey
either A orB

Hint 85

either A orB

Front 86

How long can a single run of CAT 5 cable in an office building be?

Back 86

10 meters
20 meters
50 meters
90 meters

Hint 86

90 meters (295.276Ft)

Front 87

How far must the side rails of ladders extend above a landing?

Back 87

24"
36"
48"
they must be level with the landing

Hint 87

36”

Front 88

What does the 12 in "MS12" inside a diamond symbol mean?

Back 88

12 volt system
12 volt amps capacity
12 positions
12 motors

Hint 88

12 positions

Front 89

How do you tell the difference between 568A cables and 5688 cables?

Back 89

568A cables only have 4 wires
5688 cables are shielded
The pairs of wires are arranged differently
5688 can only be used for voice transmissions

Hint 89

The pairs of wires are arranged differently

Front 90

The correct way to install wire-nuts is:

Back 90

strip ends, insert wires side-by-side and straight, then twist the wire-nut
tight
strip a little less than the length of wire-nut, twist wires together with
pliers, then spin on the wire-nut
strip ends the length of the wire-nut, twist tightly clockwise, use cutters
to trim ends even, then twist on the wire-nut hand tight
same as c, but then use pliers to add a final crimp.

Hint 90

strip ends the length of the wire-nut, twist tightly clockwise, use cutters
to trim ends even, then twist on the wire-nut hand tight

Front 91

What is the name of the outer covering for fiber optic cables?

Back 91

F.O.
L.I.U.
Armor
jacket

Hint 91

Jacket

Front 92

What does a diamond symbol containing "MM" over "R" or "B" mean?

Back 92

motor master- red for on, black for off
motor master- red for off, black for on
main motor lugs- red for hot and black for neutral
main monitor- "R" & "B" are arbitrary identifiers

Hint 92

motor master- red for on, black for off

Front 93

What tool is used to terminate a 25-pair Amphenol plug?

Back 93

crimp tool
punch tool
butterfly tool
needle nose pliers

Hint 93

butterfly tool

Front 94

The safe ty disconnect switch for a motor must be locate d

Back 94

within 25 feet of the control station
within 50 feet of the motor and driven equipment
within 75 feet and in sight from motor and equipment
within 25 feet and in the same room as the motor

Hint 94

within 50 feet of the motor and driven equipment

Front 95

A generator produces electricity by:

Back 95

electromotive force.
electro-potential force.
centripetal induction.
electromagnetic induction.

Hint 95

electromagnetic induction.