2025/2026 COMPLETE QUESTIONS
WITH VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. The Romans refined distance traveled to a unit of length called the ? .
a.cubit
b.foot
c.meter
d.mile - ANSWER ✔ d.mile
2. *The length of a vector line is proportional to the ?.
a. capacitance
b. impedance
c. inductance
d. magnitude - ANSWER ✔ d. magnitude
3. *The most common dual voltage distribution transformer is rated at ?.
a. 4,160 x 7,200 - 120/240
b. 7,200 x 14,400 - 277/480
c. 7,630 x 13,200 - 240/480
d. 14,400 x 7,200 - 120/240 - ANSWER ✔ d. 14,400 x 7,200 - 120/240
,4. *A transformer that is energized, but under no load, can draw as much as ?
of the current taken in by a loaded transformer of the same size.
a. 3%
b. 5%
c. 10%
d. 12% - ANSWER ✔ b. 5%
5. *An isolation link or current limiting fuse, in an underground transformer is
?.
a. another name for the replaceable fuse
b. between the replaceable fuse and the primary coil
c. easily replaced in the field
d. not provided on most underground transformers - ANSWER ✔ b.
between the replaceable fuse and the primary coil
6. *A ? reduces the risk of violent transformer failure when it is in series with
the cutout.
a. current limiting fuse
b. current shunt fuse
c. solidly connected ground
d. voltage limiting fuse - ANSWER ✔ a. current limiting fuse
7. *To vector a 3-phase system, it is essential to establish a ? of the phases
a. fixed reference
, b. sequential order
c. sine wave
d. vector chart - ANSWER ✔ a. fixed reference
8. *Primary voltage can be determined by multiplying transformer turns ratio
by the ?
a. nominal primary voltage, single phase
b. one-half secondary voltage
c. secondary output voltage
d. secondary voltage at the right hand bushing - ANSWER ✔ c.
secondary output voltage
9. *A typical distribution transformer consists of a(n) ?.
a. armature
b. capacitor
c. core and coil assembly
d. electric cooling fan - ANSWER ✔ d. electric cooling fan
10.*if two transformers are connected in parallel and a primary fuse blows on
one of the transformers, the other transformer will ?.
a. back-feed the one with the blown fuse
b. operate at 50 percent
c. operate normally
d/ overload and over heat with the burden of the other transformers -
ANSWER ✔ a. back-feed the one with the blown fuse