1
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NETA 3 Questions and Answers (100%
Correct Answers) Already Graded A+
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
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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
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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
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
, 2
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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
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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
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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
, 3
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IEC 61850 does not distinguish between protection and operations
information, they are handled at the application level. TRUE or
FALSE [ANS:] TRUE
What is the benchmark for age measurement in a transformer
based on continuous operation at rated load? [ANS:] 8760 hour of
load per year
Which IEEE standard covers SF6 circuit breakers? [ANS:] C37.04
The most important reason secondary circuits of current
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transformers should never be left open is: [ANS:] Dangerous
voltage could be produced
Which K-factor rating is suitable for a transformer when 100% of the
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load is electronic equipment? [ANS:] K-20
A capacitor has a capacitance of 100 microfarads on a 120V
60Hz line. How much current flows through the capacitor? [ANS:]
4.52A
Hydration is created when a battery cycles. Why is this? [ANS:]
Recharging causes some of the water to be electrolyzed into
hydrogen and oxygen
A new 69kV-4160V 2500kVA power transformer is being placed in
service and the tank has been filled with new mineral oil. A sample
of the oil is taken and the water content is 15ppm, per ASTM test
method D1533. Is this acceptable? YES or NO [ANS:] YES
Which relay protection element is best used in installations where
a generator runs in parallel with the utility or another generator so
as to prevent power from the bus bar or another generator from
flowing back to the active generator when its output fails? [ANS:]
32: Directional Power Relay
For Expert help and assignment solutions, +254707240657
NETA 3 Questions and Answers (100%
Correct Answers) Already Graded A+
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
© 2025 Assignment Expert
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
Guru01 - Stuvia
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
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
, 2
For Expert help and assignment solutions, +254707240657
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
© 2025 Assignment Expert
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
Guru01 - Stuvia
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
, 3
For Expert help and assignment solutions, +254707240657
IEC 61850 does not distinguish between protection and operations
information, they are handled at the application level. TRUE or
FALSE [ANS:] TRUE
What is the benchmark for age measurement in a transformer
based on continuous operation at rated load? [ANS:] 8760 hour of
load per year
Which IEEE standard covers SF6 circuit breakers? [ANS:] C37.04
The most important reason secondary circuits of current
© 2025 Assignment Expert
transformers should never be left open is: [ANS:] Dangerous
voltage could be produced
Which K-factor rating is suitable for a transformer when 100% of the
Guru01 - Stuvia
load is electronic equipment? [ANS:] K-20
A capacitor has a capacitance of 100 microfarads on a 120V
60Hz line. How much current flows through the capacitor? [ANS:]
4.52A
Hydration is created when a battery cycles. Why is this? [ANS:]
Recharging causes some of the water to be electrolyzed into
hydrogen and oxygen
A new 69kV-4160V 2500kVA power transformer is being placed in
service and the tank has been filled with new mineral oil. A sample
of the oil is taken and the water content is 15ppm, per ASTM test
method D1533. Is this acceptable? YES or NO [ANS:] YES
Which relay protection element is best used in installations where
a generator runs in parallel with the utility or another generator so
as to prevent power from the bus bar or another generator from
flowing back to the active generator when its output fails? [ANS:]
32: Directional Power Relay
