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| Section | Weight | Objectives |
|---|---|---|
| Systems and Commissioning | 5% | - System-Level Testing
|
| Component Testing | 55% | - Electrical Equipment Testing
|
| Safety | 15% | - Electrical Safety Fundamentals
|
| Electrical Testing Fundamentals and Theory | 25% | - Measurement Principles
|
>> NETA_2 Free Test Questions <<
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NEW QUESTION # 83
A current of30 Ais measured using a100 A, 3% accuracyammeter. What is the maximum possibleactual error?
Answer: D
Explanation:
Accuracy stated as ±3% of full scale means ±3 A on a 100 A meter. At a 30 A reading, this represents a possible error of±10%of the measured value. NETA Level 2 technicians must account for meter accuracy when interpreting readings, particularly at low portions of full-scale range.
NEW QUESTION # 84
Which portion of an electrical transmission system experiences faultsmost frequently?
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 # 85
A delta-connected load has aphase impedance of 12 #and is supplied from a480 V line-to-line source. What is theline current?
Answer: D
Explanation:
For delta systems:
Phase voltage = Line voltage = 480 V
Phase current = V / Z = 480 / 12 = 40 A
Line current = #3 × Phase current
= 1.732 × 40 #69.3 A
NETA Level 2 technicians must correctly distinguish between phase and line quantities when evaluating three- phase systems, as incorrect assumptions frequently lead to misinterpreted test results.
NEW QUESTION # 86
A series circuit contains two resistors. One resistor dissipates 10 W and the other dissipates 15 W. What is the total power dissipation?
Answer: B
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 # 87
What is theRestricted Approach Boundaryfor a69 kVsystem?
Answer: A
Explanation:
Approach boundaries are central to electrical safety programs aligned with NFPA 70E concepts and the safe work practices expected of NETA technicians. TheRestricted Approach Boundaryrepresents the distance from an exposed energized conductor or circuit part where there is an increased likelihood of shock, requiring specialized training, PPE, and controls. Entry is tightly controlled and generally requires work planning, justification, and protection methods.
For a69 kVsystem, the target Restricted Approach Boundary in your flash cards is3 ft 10 in. This value is used in field safety planning to establish barricades, determine permissible proximity, and ensure that only qualified persons with appropriate protective measures enter that space.
NETA Level 2 technicians must be able to apply boundaries when setting up test areas, especially in switchyards and medium/high-voltage environments, where inadvertent approach can occur during lead placement, phasing, or instrument setup. Correct boundary application is not optional-it is a foundational requirement to prevent shock exposure.
NEW QUESTION # 88
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