(CUSP T&D) Power Skills Line-worker Apprentice
Training Program Chapter 3 Exam 2026 Guide
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1.
A
steps
down
transmission
voltage
to
dis-
Substation
transformer
tribution voltage.
2.
In a typical distribution system, electricity at (primary
or secondary) is supplied to a customer.
3.
Primary distribution voltage is
A)
Applied to a distribution system by substation trans-
former
B)
The voltage of the electricity supplied to the cos-
tumer
C)
Applied to distribution lines in a service area
D)
Both a and c
E)
Both b and c
4.
True or false. A transformer improves the overall ef-
ficiency of a distribution system by increasing the
amount of usable power that can be supplied to a
customer
5.
During high voltage charges,
provide a way
of directing excess current to ground.
6.
List the three elements that most distribution trans-
formers have in common.
7.
True or false. Voltage applied to the primary winding
of a distribution transformer is usually higher in value
than the voltage induced in the secondary winding.
8.
True or false. Distribution transformers can be buried
underground or mounted overhead on utility poles.
Secondary
D)
Both a and c
False
Surge
arresters
A)
ferrous metat core
B)
primary
winding
C)
secondary winding
True
True
