THINGS YOU SHOULD KNOW BY
NOW AS AN APPRENTICE LINEMAN
EXAM
Polarity - Correct Answers -The direction of current flow from the primary coil to the
secondary
What constitutes a subtractive polarity - Correct Answers -Any Tranz with a primary
voltage of 8660v & above or rated over 200kva
In our 7200v/12470v system what do we normally fuse the line & laterals at - Correct
Answers -Line-140a, laterals 80a
ELI - Correct Answers -Voltage leads current (inductive reactance)
ICE(man) - Correct Answers -Current leads voltage (capacitive reactance)
Symbols for inductive reactance & capacitive reactance - Correct Answers -Xl,Xc
Impedance - Correct Answers -All forces which resist current flow in an AC circuit.
(Total opposition) Symbol- Z
PT - Correct Answers -A potential transformer that is designed to reduce voltage so that
it can be used or metered at a much lower level
KVAR - Correct Answers -TheMeasure of additional reactive current flow which occurs
when the voltage and current flow are not perfectly in phase
Nominal voltage - Correct Answers -a nominal value assigned to a circuit or system for
the purpose of conveniently designating it's voltage class
A nonlinear device to limit the amplitude of voltage on a power line. - Correct Answers -
Arrestor
The property of a capacitor that determines the quantity of electric energy that can be
stored. - Correct Answers -Capacitance
symbol- C
True power. (Kilowatt hour) - Correct Answers -KWH
, It is expressed in cycles per second. (Hz) - Correct Answers -Frequency/ measured in -
Hertz
What is considered extra high voltage? - Correct Answers -Any voltage 345kv or above
Volt amps - Correct Answers -The unit of electrical power. Symbol P or W
Induction - Correct Answers -The ability of a coil to store energy and oppose changes in
current flowing through it. Symbol- L
Capacitor - Correct Answers -A device consisting of two conducting surfaces separated
by an insulator and having the ability of storing electric energy.
Symbol for American wire gauge... - Correct Answers -AWG dummy
Unequal loads on the phase lines of a multiphase feeder... - Correct Answers -
Inbalance
Ampere - Correct Answers -A unit of electrical current
Ohm - Correct Answers -The unit of electrical resistance. Symbol- R
Primary - Correct Answers -Voltage exceeding 600volts is considered...
Service - Correct Answers -The conductors and equipment used to energize a
customers meter...
Bus - Correct Answers -A heavy rigid conductor...
System nuetral - Correct Answers -A grounded conductor. Fourth wire of a Y system.
1 million - Correct Answers -Mega
Symbol for Thousand volt amp - Correct Answers -KVA
Turns ratio - Correct Answers -The ratio of primary to secondary windings...
The turns ratio in a transformer with a primary voltage of 7200 and secondary voltage of
120/240... - Correct Answers -30 to 1
Henry - Correct Answers -The practical unit of induction. Symbol H
Joule - Correct Answers -A measure of the amount of energy delivered by 1 Watt of
power in one second
NOW AS AN APPRENTICE LINEMAN
EXAM
Polarity - Correct Answers -The direction of current flow from the primary coil to the
secondary
What constitutes a subtractive polarity - Correct Answers -Any Tranz with a primary
voltage of 8660v & above or rated over 200kva
In our 7200v/12470v system what do we normally fuse the line & laterals at - Correct
Answers -Line-140a, laterals 80a
ELI - Correct Answers -Voltage leads current (inductive reactance)
ICE(man) - Correct Answers -Current leads voltage (capacitive reactance)
Symbols for inductive reactance & capacitive reactance - Correct Answers -Xl,Xc
Impedance - Correct Answers -All forces which resist current flow in an AC circuit.
(Total opposition) Symbol- Z
PT - Correct Answers -A potential transformer that is designed to reduce voltage so that
it can be used or metered at a much lower level
KVAR - Correct Answers -TheMeasure of additional reactive current flow which occurs
when the voltage and current flow are not perfectly in phase
Nominal voltage - Correct Answers -a nominal value assigned to a circuit or system for
the purpose of conveniently designating it's voltage class
A nonlinear device to limit the amplitude of voltage on a power line. - Correct Answers -
Arrestor
The property of a capacitor that determines the quantity of electric energy that can be
stored. - Correct Answers -Capacitance
symbol- C
True power. (Kilowatt hour) - Correct Answers -KWH
, It is expressed in cycles per second. (Hz) - Correct Answers -Frequency/ measured in -
Hertz
What is considered extra high voltage? - Correct Answers -Any voltage 345kv or above
Volt amps - Correct Answers -The unit of electrical power. Symbol P or W
Induction - Correct Answers -The ability of a coil to store energy and oppose changes in
current flowing through it. Symbol- L
Capacitor - Correct Answers -A device consisting of two conducting surfaces separated
by an insulator and having the ability of storing electric energy.
Symbol for American wire gauge... - Correct Answers -AWG dummy
Unequal loads on the phase lines of a multiphase feeder... - Correct Answers -
Inbalance
Ampere - Correct Answers -A unit of electrical current
Ohm - Correct Answers -The unit of electrical resistance. Symbol- R
Primary - Correct Answers -Voltage exceeding 600volts is considered...
Service - Correct Answers -The conductors and equipment used to energize a
customers meter...
Bus - Correct Answers -A heavy rigid conductor...
System nuetral - Correct Answers -A grounded conductor. Fourth wire of a Y system.
1 million - Correct Answers -Mega
Symbol for Thousand volt amp - Correct Answers -KVA
Turns ratio - Correct Answers -The ratio of primary to secondary windings...
The turns ratio in a transformer with a primary voltage of 7200 and secondary voltage of
120/240... - Correct Answers -30 to 1
Henry - Correct Answers -The practical unit of induction. Symbol H
Joule - Correct Answers -A measure of the amount of energy delivered by 1 Watt of
power in one second
