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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
|
>> Relevant NETA NETA_2 Questions <<
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NEW QUESTION # 25
In azone-interlocked low-voltage circuit breakerscheme, if the breaker responsible for clearing a fault fails to operate, which statement is correct?
Answer: D
Explanation:
Zone-selective interlocking (ZSI) improves coordination by allowing downstream devices to trip first while restraining upstream devices. If the downstream breaker fails to clear the fault, restraint signals are removed and thenext upstream breaker tripsto isolate the fault.
NETA Level 2 technicians must understand this fail-safe behavior when commissioning protection systems and validating coordination logic.
NEW QUESTION # 26
The three-phase connection in whichone end of each winding is connected togetheris called which configuration?
Answer: C
Explanation:
In awye (star)connection, one end of each phase winding is tied together at a common point known as the neutral. This configuration allows for both line-to-line and line-to-neutral voltages and is commonly used in distribution systems.
NETA Level 2 technicians must understand transformer and system configurations because they affect voltage relationships, current flow, grounding methods, and testing procedures. Identifying a wye connection is essential when interpreting nameplates, calculating phase voltages, and performing ratio or insulation testing.
NEW QUESTION # 27
Each switchboard used asservice equipmentmust be provided with amain bonding jumper.
Answer: A
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 # 28
According to NETA standards, what is themaximum allowable timetest instruments may remain in service before requiring recalibration?
Answer: B
Explanation:
NETA standards require test instruments to be calibrated at leastonce every 12 monthsto ensure measurement accuracy and traceability. Using out-of-calibration instruments can invalidate test results and compromise safety decisions. NETA Level 2 technicians must verify calibration labels, dates, and traceability before using any test equipment in the field.
NEW QUESTION # 29
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 # 30
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