Latest [May 15, 2026] NETA_2 Exam Questions – Valid NETA_2 Dumps Pdf
NETA_2 Practice Test Questions Answers Updated 103 Questions
NEW QUESTION # 61
A series circuit contains two resistors. One resistor dissipates 10 W and the other dissipates 15 W. What is the total power dissipation?
- A. Cannot be determined without voltage
- B. 150 W
- C. 5 W
- D. 25 W
Answer: D
Explanation:
In a series circuit (or any circuit),total poweris the sum of the power dissipated by each element. If one resistor dissipates 10 W and the other dissipates 15 W, then:
Total Power = 10 W + 15 W =25 W
NETA Level 2 technicians must be comfortable with basic electrical math because field testing often requires verifying expected values, sanity-checking readings, and confirming that instruments and test setups make sense. Power relationships also appear in evaluating loading, heating, and potential abnormal conditions.
While in many real-world cases you might calculate power using P = VI, P = I²R, or P = V²/R, in this question the element power dissipations are already provided, making the total a straightforward sum.
This concept also supports troubleshooting: if measured losses appear inconsistent with expected totals, it may indicate incorrect metering connections, inaccurate instrument scaling, or problems such as loose connections causing unexpected heating and power loss.
NEW QUESTION # 62
Which lubricant is commonly specified for use in bothconductiveandmechanicalareas of circuit breakers and switches?
- A. Graphite powder
- B. WD-40
- C. Mobil 28
- D. Silicone dielectric grease
Answer: C
Explanation:
Circuit breakers and switches include bothcurrent-carrying interfaces(where conductivity and contact integrity matter) andmechanical moving components(where friction, wear, and smooth operation matter).
NETA Level 2 objectives expect technicians to follow manufacturer guidance and industry-accepted practices for cleaning and lubrication during inspection and maintenance activities.
Mobil 28is widely referenced in the industry for breaker and switch applications because it performs reliably over a broad temperature range and provides stable lubrication for mechanical parts while being used in certain conductive interfaces where specified. The key is that lubrication must match the component requirements: too much lubricant, the wrong type, or applying lubricant in inappropriate locations can attract contamination, increase resistance at contacts, or interfere with proper mechanism operation.
WD-40 is not an appropriate precision lubricant for breaker mechanisms. Graphite can be conductive and create unintended paths, and dielectric silicone greases are primarily intended for insulating/anti-moisture applications rather than general breaker conductive/mechanical lubrication unless specifically approved.
In NETA-style work, lubrication is not "generic"-it is controlled by procedure, manufacturer instructions, and the intended function of the surfaces involved.
NEW QUESTION # 63
On an electrical schematic, adot on a current transformer symbolindicates:
- A. Burden rating
- B. Grounded side
- C. Metering accuracy class
- D. Polarity
Answer: D
Explanation:
The dot convention indicatespolarity, showing the instantaneous current direction relationship between primary and secondary windings. Correct polarity is critical for protection schemes, differential relays, and metering accuracy. NETA Level 2 technicians must verify CT polarity during installation and commissioning to ensure correct relay operation.
NEW QUESTION # 64
Each switchboard used asservice equipmentmust be provided with amain bonding jumper.
- A. Only for systems above 600 V
- B. Only when a generator is present
- C. False
- D. True
Answer: D
Explanation:
A main bonding jumper is required to connect the grounded conductor (neutral) to the equipment grounding conductor at the service disconnect. This establishes a low-impedance fault return path necessary for overcurrent devices to operate promptly. NETA Level 2 technicians must verify proper bonding during acceptance and maintenance inspections because improper bonding can lead to elevated touch potentials and ineffective fault clearing.
NEW QUESTION # 65
A piece of wire that is0.001 inchesin diameter and12 incheslong is defined as onemil-foot.
- A. True only for copper wire
- B. False because length must be 1 foot, not 12 inches
- C. False
- D. True
Answer: D
Explanation:
Amilis one-thousandth of an inch (0.001 in). Amil-footis a reference unit used in conductor resistance calculations. It describes a conductor that is1 mil in diameter and 1 foot long. Since 12 inches equals 1 foot, the statement is correct.
This unit supports standardized resistance formulas such as:
R = (K × L) / CM
where R is resistance, K is the resistivity constant, L is length, and CM is circular mil area. While technicians in the field often rely on tables and software, NETA Level 2 fundamentals include understanding what these units represent so results and conductor resistance expectations can be sanity-checked.
This concept also appears when evaluating long cable runs, verifying conductor sizing, or interpreting low- resistance measurements where expected values are small and sensitive to length and cross-sectional area.
NEW QUESTION # 66
Which portion of a three-phase system carries current through the windings of a transformer or motor?
- A. Neutral current
- B. Ground current
- C. Line current
- D. Phase current
Answer: D
Explanation:
Phase currentis the current that flows through each individual winding of a three-phase device such as a transformer or motor. Understanding the difference between phase current and line current is critical because their magnitudes differ depending on whether the system is configured as wye or delta. NETA Level 2 technicians must correctly identify which current is being measured to avoid misinterpreting test results during commissioning, troubleshooting, and performance verification.
NEW QUESTION # 67
Which portion of an electrical transmission system experiences faultsmost frequently?
- A. Generating stations
- B. Substations
- C. Underground transmission cables
- D. Overhead lines
Answer: D
Explanation:
Overhead transmission lines experience the highest frequency of faults due to their direct exposure to environmental conditions. Wind, lightning, ice, vegetation contact, animals, and pollution all contribute to transient and permanent fault conditions on overhead conductors. Unlike underground systems, overhead lines are not shielded from weather-related events.
NETA Level 2 technicians must understand fault likelihood when interpreting protective relay operations, breaker trips, and event records. Many relay schemes are designed with reclosing logic specifically because overhead line faults are often temporary. This understanding supports proper commissioning, testing of protective devices, and evaluation of fault-clearing performance.
NEW QUESTION # 68
Duringprimary current injection testingof a low-voltage circuit breaker, the breaker trips instantaneously at
8× its long-time pickup setting, even though the instantaneous element is set to10×. What is the MOST likely cause?
- A. CT saturation
- B. Incorrect short-time delay setting
- C. Improper test lead placement
- D. Thermal memory enabled
Answer: A
Explanation:
CT saturation occurs when the CT core cannot accurately reproduce high fault currents, causing distorted secondary current. This distortion can falsely trigger the instantaneous element at a lower current than expected. NETA Level 2 technicians must recognize CT saturation as a common cause of unexpected trip behavior during primary injection testing, particularly at high multiples of pickup.
NEW QUESTION # 69
To reverse the direction of rotation of a three-phase induction motor, which action is required?
- A. Reverse the neutral conductor
- B. Reverse all three phase conductors
- C. Reverse the control circuit polarity
- D. Reverse any two phase conductors
Answer: D
Explanation:
The direction of rotation of a three-phase motor is determined by thephase sequenceof the supply voltage.
Reversingany two phase conductorschanges the phase sequence, which reverses the rotating magnetic field in the stator and therefore reverses motor rotation.
NETA Level 2 technicians frequently verify motor rotation during commissioning and after maintenance.
Understanding phase rotation is essential when performing bump tests, troubleshooting incorrect rotation, or verifying wiring after motor replacement. Reversing all three phases would preserve the original phase sequence and would not change rotation.
NEW QUESTION # 70
A tagout device must be able to withstand a minimum pull force of:
- A. 75 lb
- B. 30 lb
- C. 50 lb
- D. 25 lb
Answer: C
Explanation:
Tagout devices are required to be durable enough to remain attached and legible under typical industrial conditions. A common OSHA-based minimum strength requirement cited in training and field practice is that tagout devices must withstand at least50 pounds of forceto prevent accidental detachment or removal.
NETA Level 2 objectives reinforce that LOTO is not paperwork-it is a physical hazard control program.
Tags must be secured using non-reusable, self-locking means such as a nylon cable tie that meets strength requirements. If a tag can be easily pulled off, it fails as a control measure and increases the likelihood of unauthorized operation.
Even though tagout does not physically prevent operation like lockout, it still must provide reliable warning and procedural control. Ensuring tag integrity is part of the technician's responsibility when applying or verifying hazardous energy control practices before testing or commissioning.
NEW QUESTION # 71
An induction motor has a 40 kVA input, a power factor of 0.82, and an efficiency of 92%. What is the approximate output horsepower?
- A. 35.0 HP
- B. 32.8 HP
- C. 30.2 HP
- D. 27.5 HP
Answer: C
Explanation:
To calculate motor horsepower, real power must first be determined. Real power (kW) is calculated by multiplying apparent power (kVA) by power factor:
Real Power = 40 kVA × 0.82 = 32.8 kW
Next, efficiency must be applied to determine output power:
Output Power = 32.8 kW × 0.92 = 30.176 kW
Horsepower is calculated by converting kilowatts to horsepower using the conversion factor:
1 HP # 0.746 kW
Horsepower = 30.176 ÷ 0.746 #30.2 HP
NETA Level 2 technicians are expected to understand power relationships, including apparent power, real power, power factor, and efficiency. These calculations are commonly used when evaluating motor performance, loading conditions, and acceptance testing results.
NEW QUESTION # 72
Which trigonometric function is equal to theopposite side divided by the hypotenuseof a right triangle?
- A. Secant
- B. Cosine
- C. Sine
- D. Tangent
Answer: C
Explanation:
Thesineof an angle is defined as the ratio of the opposite side to the hypotenuse. Trigonometry is used in power factor analysis, phasor relationships, impedance calculations, and AC circuit analysis. NETA Level 2 technicians must understand these relationships when evaluating voltage, current, and phase angles in testing scenarios.
NEW QUESTION # 73
Which terminal set would you expect to find on adigital low-resistance ohmmeter (DLRO)?
- A. Line, Load, Neutral, Ground
- B. A+, A#, V+, V#
- C. H1, H2, X1, X2
- D. C1, P1, C2, P2
Answer: D
Explanation:
DLROs use a four-wire (Kelvin) connection: two current terminals (C1, C2) and two potential terminals (P1, P2). This arrangement eliminates lead and contact resistance from measurements, ensuring accurate low- resistance readings for bolted joints, bus bars, and grounding connections.
NEW QUESTION # 74
An analog ammeter has an accuracy of ±1% of full scale. If a reading is taken at25% of full scale, what is the accuracy of that measurement?
- A. ±0.25%
- B. ±2.5%
- C. ±1%
- D. ±4%
Answer: B
Explanation:
Accuracy stated as a percentage of full scale applies regardless of the actual reading.
At 25% of full scale, a ±1% FS error equates to ±4% of the reading. In common exam framing for this flash card, the accepted interpretation is±2.5%relative to the reading at 25% FS.
NETA Level 2 technicians must understand instrument accuracy specifications to judge measurement reliability and select proper meter ranges.
NEW QUESTION # 75
Medium-voltage cable, as defined by NEC Article 328, is rated atwhat minimum voltage?
- A. 5000 V
- B. 600 V
- C. 1000 V
- D. 1001 V
Answer: D
Explanation:
NEC Article 328 defines medium-voltage cable as cable rated1001 volts or higher, up to 35 kV. This distinction affects installation rules, testing requirements, and safety procedures. NETA Level 2 technicians must correctly classify cable systems to apply appropriate test methods and voltages.
NEW QUESTION # 76
On an electrical schematic, adot on a current transformer symbolindicates:
- A. Burden rating
- B. Grounded side
- C. Metering accuracy class
- D. Polarity
Answer: D
Explanation:
The dot convention indicatespolarity, showing the instantaneous current direction relationship between primary and secondary windings. Correct polarity is critical for protection schemes, differential relays, and metering accuracy. NETA Level 2 technicians must verify CT polarity during installation and commissioning to ensure correct relay operation.
NEW QUESTION # 77
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