NM ES3 COURSE: Exam
Questions and Answers all
Correct 100% 2025!
A
VI
Wiring System - ANSWER Is a form of electrical circuit.
TU
Electrical circuit - ANSWER Is comprised of an energy source, energy transfer
medium and a load.
Energy Transfer Medium - ANSWER copper wire, fiber optic cables and air in the
case of radiated energy
IS
Load - ANSWER receives the transferred energy such as resistors, lights, speakers,
motors, etc.
M
EMF (electromotive force) - ANSWER The force that moves electrical energy.
O
Current or Current Flow - ANSWER The movement of electrons through a circuit
that is caused by the electromotive force or voltage applied to the circuit.
A
Inductance (L) - ANSWER Unit is the henry. It is the property of a circuit that causes
an opposition to any change of current within the circuit. As electrons flow, a magnetic
field is produced. The magnetic force induces a change in voltage.
N
Grounding - ANSWER assures transmission of electrical signals without
interference from electromagnetic radiation from other transmission lines and
JP
equipment. This interference, called crosstalk, can happen from adjacent lines, motors,
PCs, lights and other devices.
Grounding electrode - ANSWER Connection to the electrode should be less than 1
ft below the surface of the solid and the electrode should extend at least 10 ft below
ground.
Ground Loop - ANSWER Causes a current to flow in the low resistance of the shield
resulting in electromagnetic waves that are picked up as noise through the wire.
, 66 block - ANSWER A punchdown block that terminates 22 to 26 AWG solid copper
wire. The 25 pair standard non split 66 block contains 50 rows.
110 block - ANSWER To terminate on-premises wiring in structured cabling. IDC or
Insulation displacement contact connector is used to terminate the twisted pair. The 110
allows for a much higher density of terminations, less crosstalk and higher bandwidth
data.
UF - ANSWER Cable can be buried into the ground. Not approved for commercial
use in NM. 340.10
A
Balun - ANSWER A means of matching an unbalanced antenna or transmission line
to a balanced transmission line or antenna (Usually have a transformer in them)
VI
Bus Topology - ANSWER All nodes are connected to a single shared
communication line
TU
Ring Topology - ANSWER Topology where the computers are connected on a loop
or ring.
Star Topology - ANSWER A topology with one central node that has each computer
IS
or network device attached to the central node. All data first goes into the central node
and then is sent out to its destination.
Transducer - ANSWER A device that converts energy from one form to another
M
Crossover - ANSWER Divide an output into separate circuits each covering a
specific band or frequency range.
O
inverse square law - ANSWER Each doubling of distance from the sound source
results in a fourfold reduction of sound power (equal to 6db). If one moves 4' to 8' from a
A
sound source, the level is reduced by 6 db. Double the distance to 16' and the level is
reduced another 6db to 12 db.
N
Dry Contact Devices - ANSWER Normally open switch which close on activation
and creates and alarm. Pull stations, heat detectors, four wire smoke detectors,
JP
sprinkler supervisory switches.
Conventional Fire Systems - ANSWER Two types of zones. Initiating and
Notification zones. The number of initiating zones defines how large the system can be.
Most conventional zones use a two-wire scheme and end of line resistor for supervision
or IDC.
IDC - ANSWER Initiating Device Circuit. The IDC connects an auto or manual
initiating device to a zone or a monitoring module.
Questions and Answers all
Correct 100% 2025!
A
VI
Wiring System - ANSWER Is a form of electrical circuit.
TU
Electrical circuit - ANSWER Is comprised of an energy source, energy transfer
medium and a load.
Energy Transfer Medium - ANSWER copper wire, fiber optic cables and air in the
case of radiated energy
IS
Load - ANSWER receives the transferred energy such as resistors, lights, speakers,
motors, etc.
M
EMF (electromotive force) - ANSWER The force that moves electrical energy.
O
Current or Current Flow - ANSWER The movement of electrons through a circuit
that is caused by the electromotive force or voltage applied to the circuit.
A
Inductance (L) - ANSWER Unit is the henry. It is the property of a circuit that causes
an opposition to any change of current within the circuit. As electrons flow, a magnetic
field is produced. The magnetic force induces a change in voltage.
N
Grounding - ANSWER assures transmission of electrical signals without
interference from electromagnetic radiation from other transmission lines and
JP
equipment. This interference, called crosstalk, can happen from adjacent lines, motors,
PCs, lights and other devices.
Grounding electrode - ANSWER Connection to the electrode should be less than 1
ft below the surface of the solid and the electrode should extend at least 10 ft below
ground.
Ground Loop - ANSWER Causes a current to flow in the low resistance of the shield
resulting in electromagnetic waves that are picked up as noise through the wire.
, 66 block - ANSWER A punchdown block that terminates 22 to 26 AWG solid copper
wire. The 25 pair standard non split 66 block contains 50 rows.
110 block - ANSWER To terminate on-premises wiring in structured cabling. IDC or
Insulation displacement contact connector is used to terminate the twisted pair. The 110
allows for a much higher density of terminations, less crosstalk and higher bandwidth
data.
UF - ANSWER Cable can be buried into the ground. Not approved for commercial
use in NM. 340.10
A
Balun - ANSWER A means of matching an unbalanced antenna or transmission line
to a balanced transmission line or antenna (Usually have a transformer in them)
VI
Bus Topology - ANSWER All nodes are connected to a single shared
communication line
TU
Ring Topology - ANSWER Topology where the computers are connected on a loop
or ring.
Star Topology - ANSWER A topology with one central node that has each computer
IS
or network device attached to the central node. All data first goes into the central node
and then is sent out to its destination.
Transducer - ANSWER A device that converts energy from one form to another
M
Crossover - ANSWER Divide an output into separate circuits each covering a
specific band or frequency range.
O
inverse square law - ANSWER Each doubling of distance from the sound source
results in a fourfold reduction of sound power (equal to 6db). If one moves 4' to 8' from a
A
sound source, the level is reduced by 6 db. Double the distance to 16' and the level is
reduced another 6db to 12 db.
N
Dry Contact Devices - ANSWER Normally open switch which close on activation
and creates and alarm. Pull stations, heat detectors, four wire smoke detectors,
JP
sprinkler supervisory switches.
Conventional Fire Systems - ANSWER Two types of zones. Initiating and
Notification zones. The number of initiating zones defines how large the system can be.
Most conventional zones use a two-wire scheme and end of line resistor for supervision
or IDC.
IDC - ANSWER Initiating Device Circuit. The IDC connects an auto or manual
initiating device to a zone or a monitoring module.
