NETA 3 EXAM 2025/2026 QUESTIONS
AND ANSWERS 100% PASS
At what voltage level are secondary class arresters typically applied? - ANS 1000 kVA and less
The maximum overcurrent protection for 14 AWG copper conductor is? - ANS 15 Amps
How is lagging power factor improved using a synchronous motor? - ANS Raise excitation of
field winding
In most installations, capacitors cases are not required to be connected to the equipment
grounding conductor. TRUE or FALSE - ANS FALSE
Visual inspections or checks are not required on circuits not energized or not carrying current at
the time of an infrared survey. TRUE or FALSE - ANS FALSE
Energy in a capacitor is stored as a(n): - ANS Electrostatic charge
When performing resistance tests on a transformer winding, core saturation happened typically
when the test current is about ___% of rated current. - ANS 1%
Which type of test sensor is best used for detection PD in tanks filled with dielectric? -
ANS Acoustic Emission (AE) Sensor
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, A relay with either a definite or inverse time characteristic that functions when the current in
the AC circuit exceed a predetermined value. - ANS 50: Instantaneous Overcurrent Relay
When multiple auxiliary rod, pip, or plate electrodes are installed for providing a ground
system, they shall no be less than ________apart. - ANS 6 feet
What is the primary danger associated with burn-out control lights in switchgear? - ANS Its
possible protective devices will not fuction
In thermal imaging systems, what is the range from the lowest temperature to the highest on
the temperature scale known as? - ANS Dynamic Range
Fuse-holders for cartridge fuses shall be so designed that it is difficult to put a fuse of any given
class into a fuse-holder that is designed for a _____ lower or a _____ higher than that of the
class to which the fuse belongs. - ANS current / voltage
What is the approximate sum of the following two vectors? Magnitude 10 at 120° and
magnitude 15 at 90° - ANS magnitude 24 at 102°
OSHA 29 CFR 1910.269 states that employers shall ensure the outer layer of clothing worn by
an employee, except for clothing not required to be arc rated, is flame resistant under certain
conditions. Which of the conditions listed is incorrect? - ANS The incident heat energy
exceeds 1.2 cal/cm2 (squared)
What is the purpose of testing the outputs from the station level in an IEC 61850 system? -
ANS To verify the operation of circuit breaker controls
The best location for installation of a surge arrester is: - ANS At the service terminals of the
equipment it is protecting
IEC 61850 does not distinguish between protection and operations information, they are
handled at the application level. TRUE or FALSE - ANS TRUE
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
AND ANSWERS 100% PASS
At what voltage level are secondary class arresters typically applied? - ANS 1000 kVA and less
The maximum overcurrent protection for 14 AWG copper conductor is? - ANS 15 Amps
How is lagging power factor improved using a synchronous motor? - ANS Raise excitation of
field winding
In most installations, capacitors cases are not required to be connected to the equipment
grounding conductor. TRUE or FALSE - ANS FALSE
Visual inspections or checks are not required on circuits not energized or not carrying current at
the time of an infrared survey. TRUE or FALSE - ANS FALSE
Energy in a capacitor is stored as a(n): - ANS Electrostatic charge
When performing resistance tests on a transformer winding, core saturation happened typically
when the test current is about ___% of rated current. - ANS 1%
Which type of test sensor is best used for detection PD in tanks filled with dielectric? -
ANS Acoustic Emission (AE) Sensor
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, A relay with either a definite or inverse time characteristic that functions when the current in
the AC circuit exceed a predetermined value. - ANS 50: Instantaneous Overcurrent Relay
When multiple auxiliary rod, pip, or plate electrodes are installed for providing a ground
system, they shall no be less than ________apart. - ANS 6 feet
What is the primary danger associated with burn-out control lights in switchgear? - ANS Its
possible protective devices will not fuction
In thermal imaging systems, what is the range from the lowest temperature to the highest on
the temperature scale known as? - ANS Dynamic Range
Fuse-holders for cartridge fuses shall be so designed that it is difficult to put a fuse of any given
class into a fuse-holder that is designed for a _____ lower or a _____ higher than that of the
class to which the fuse belongs. - ANS current / voltage
What is the approximate sum of the following two vectors? Magnitude 10 at 120° and
magnitude 15 at 90° - ANS magnitude 24 at 102°
OSHA 29 CFR 1910.269 states that employers shall ensure the outer layer of clothing worn by
an employee, except for clothing not required to be arc rated, is flame resistant under certain
conditions. Which of the conditions listed is incorrect? - ANS The incident heat energy
exceeds 1.2 cal/cm2 (squared)
What is the purpose of testing the outputs from the station level in an IEC 61850 system? -
ANS To verify the operation of circuit breaker controls
The best location for installation of a surge arrester is: - ANS At the service terminals of the
equipment it is protecting
IEC 61850 does not distinguish between protection and operations information, they are
handled at the application level. TRUE or FALSE - ANS TRUE
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
