Journeyman Lineman Test – Questions With Correct Answers
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Course
Journeyman Lineman –2024 2025
Institution
Journeyman Lineman –2024 2025
Delta Secondary Voltages?
Delta doubles (Phase to phase is always 2 x Phase to neutral.)
WYE Secondary Voltages?
Phase to phase is always 1.73 x phase to neutral
Shoring and Latter placement?
3 4 5-Shoring
Latter extends 3' past rest point
At 4' you need a ladder
At 5' you need shoring
1 L...
Journeyman Lineman Test – Questions With Correct
Answers
Delta Secondary Voltages?
Delta doubles (Phase to phase is always 2 x Phase to neutral.)
WYE Secondary Voltages?
Phase to phase is always 1.73 x phase to neutral
Shoring and Latter placement?
3 4 5-Shoring
Latter extends 3' past rest point
At 4' you need a ladder
At 5' you need shoring
1 Ladders every 25'
,Journeyman Lineman Test – Questions With Correct
Answers
What causes resistance in a conductor?
The Type: Copper/ACSR,
Size, Length, and Temperature (the more heat more resistance.)
How do you take a capacitor off line?
Open oil switch or open cutout with load break. The internal resistor should bleed the voltage to 50 volts
or less in 5 min. Then shunt and ground the capacitors.
What do capacitors do?
Improve power factor, when the current is lagging the voltage.
Why does a recloser stay energized longer on the 3rd or 4th shot?
To allow a fuse to blow if there is a tree fault and also to narrow down the area of the fault after the
fuse blows.
The reason it holds open is to allow an sectionalizer to open cause it operates under no voltage.
trans position - Correct answer-its . the process of moving one Phase to another side the Pole
Impedance the total opposition to current flow in an AC circuit . The letter symbol is Z and it is
measured in ohms . It is made up of - Correct answer-d . resistance , inductive reactance and
capacitive reactance
The RMS voltage value of a line is 480 volts . This means that the voltage is 480 . - Correct answer-✓a .
effective
... A copper atom has an atomic number of 29. This means there are 29 - Correct answer-protons /
electrons in the shells
, Journeyman Lineman Test – Questions With Correct
Answers
What is the reason for grounding the center bushing on a - volt transformer secondary ? -
Correct answer-obtain the 120v
What degree of phase shift occurs between a wye and a delta transformer connection ? - Correct
answer-30 and 210 degrees
The line voltage is equal to the phase voltage in a? - Correct answer-Delta circuit
An open - wye , open delta has a total KVA rating of 100 KVA . The actual KVA available is? - Correct
answer-86.6%
A circuit uses vectors from head to tail .
a delta
b short
C. wyc
d . balanced open - Correct answer-Delta
An open - wye , open - wye bank must have the primary neutral - Correct answer-Grounded or tied
List four things that should always be checked on the transformer nameplates . - Correct answer-a .
Voltage ratings
b . Impedence
C. Polarity
d . Taps
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