C7 test Flashcards by craig heiman

How is a fiber optic cable terminated?

568SC

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What does VOM stand for?

Volt Ohmmeter

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What does ACV stand for?

Alternating current voltage

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What does DCV stand for?

Direct current voltage

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How should you install vertical cables

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

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A low voltage contractor can install equipment carrying a maximum of

91 volts

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

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what is the max bending radius for fiber optic cable

20 times the diameter

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

50 feet

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what is the max pulling tension for CAT 5 cables

25 lbs

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what is the typical max pulling tension for indoor fiber optic cables

100 lbs

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what is the typical max pulling tension for outdoo fibe cable

600 lbs

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what is the best method for splicing singlemode fiber

fusion splice with strain relief boot

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What is the best method for splicing multimode fiber

mechanical alignment sleeve with index matching gel

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what is a core drill

a hollow drill used to remove section of material

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when can overhead communicartion lines be installed on a cross member that has high viltage lines attached

never

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which of the followin is most approprate to fight electral fire

Co2

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for which of the following would you use a spade bit

wood

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when dealing with tempoirary power at a job site, what precaitionary steps need to be taken

it should be installed so that it is protected from physical damage

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what is the max height a worker may be ex[osed to before a sagety harness is required

15 feet

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when placing a connector on a cat 5 cable, how much of the cable jacket can be stripped back

only as much as you need

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when placing a connector on a CAT 5 cable , how far may the wir pairs be untwisted

.5”

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what are the three ost common cental office cabling systems

UTP, STP and fiber optics

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as a general rule, what is the min bending radius of conduits 1 “ and larger

6 times the diameter

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what connecting audio cable, what is the red connector

right audio

when connecting audio cables, what is the white connector used for

left audio

what is the min heigh over a residential driveway

12'

what is the smallest speaker

tweeter

what is typically found in floors in CA

Asbestos

What is typiclly found in electrial light ballasts in CA

PCB (polycyclorinated biphenyls)

what do you not do when you test fiber optic with OTDR

look in the other end

what is the min ovelap of an extension ladder

36"

what type of jack should be used on a CAT 5 100MHZ cable installation

RJ45

what do you do whith materails if you are done with them

mover them out of the way to keep the are clean, uncluttered and safe

where should you keep the brooms and shovels on a jobsite

in a place safe to get to

what does ADA compliant refer to

contracors followed American with Disabilities Act codes and requirements

what should you do when you are finished with your power tools

wait until all motion has stopped before leaving the machine

1/4 scale refers to

4'- 1"

you are wiriing inside a manhole that is 6' x 12' and 7' form floor to ceilling. Is this situation allowed

yes

what is the 15th pair in 24 pair cable

black/slate

what is the 25th pair in 25 pair cable

violet/slate

which is the following should you take into consideration when running low voltage wiring

electomagnic interference

which of the following is used for horizontal cabling

CAT5, Fiber Optic cable, shielded Twisted Pair

the network ground connection for low voltage systmes should

be grounded at the main electrical panel

which of the following shoudl you do before enering a confined space

test the air inside the area

how many pairs are in backbone cabling

what can be done make pulling long runs of wire though conduit

use lube

what gauge wire is used to ground telecommunication cable and equipment

6 AWG

what color is used for the first pair when installing telephone lines

blue

what material is most commonly used a backing to mount teminatin blocks

plywood

when should look into the end of active optic fiber

never

if you deviated form the plans , you must make a note of the change on a separte set of plans.

as builts

which is the folloing is used to support telephone wires

channel molding

what type fo fire extingusihser should not be used on an electical fire

H20

what should you do whith a broken drill

tag it as broken and remove it from the jobsite

what is the propoer way to lift a tool

by the handle

what is the total impedance of five 8-ohm speakers connected in series

40 ohms

what is the total impedance of five 8-ohm spekers connected in parallel

1.6 ohms

what is considered to be the most dangerious in electrical shock

amps

which has the greatest potential to cause harm 600 v or 24 V

both have the same potential

when running low voltage wiriing through a fire wall, how do you seall the opening

intmescent fire stop

how do you atach wired in a teminal block

puch down tool

what is the max lenghth of a horizonal cross connectionect

5 m

what is the power rating of a circuit that has a voltage of 10 volts and a resistatnce of 12 ohms

8.3 watts

where should the key be kept when equiptment is locked out and subcontractor is involved

on the direct person of subcontractor

what is the max stripping for coaxial cable when teminating coaxial cable F connectors

1/2 in

what is the max working lengh for a 40' exentsion ladder

36'

what shoudl you do if have one shielded cable that eners two building

gound both ends in both buidlings

during excavation, how far from the edge must excaved spoils be deposited

what is the max lengh for a fall protection harness

when shoudl an employer give instruction on fail hazards

immediately

when do you connect a safty harness

back shoulder

what is the min amounbt a saftery should hold

5,000 lbs

when should fall retrain systms be inspected

twice per year

in clay soil, how deep can a trench be before it requires shoring

at what depth is a ladder required for worker access

what is the max width of a trench before a bridge is required

30'

what wire should be used to cross connect a stradard telephone connections

24 AWG

what tyoe of jack should be used on a Cat 6 cable installation

RJ-45

what is the max span allowed for scaffold planking

10 feet

what is the max vertical height for a medium-duty tube and couple scaffold

125'

what is the smalled width allowed for scaffold planking

10"

what is metal scaffold designed for

live loads, wind loads, dead loads

what is the min a max heigh of scaffold guardrail

42"

what is the max overhang of scaffold plank

18"