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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Safety | 15% | - Electrical Safety Fundamentals
|
| Topic 2: Electrical Testing Fundamentals and Theory | 25% | - Measurement Principles
|
| Topic 3: Systems and Commissioning | 5% | - System-Level Testing
|
| Topic 4: Component Testing | 55% | - Electrical Equipment Testing
|
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NEW QUESTION # 84
A battery bank consists of60 cells, each rated2 V. What is thenominal DC voltageof the battery bank?
Answer: C
Explanation:
Battery bank voltage is calculated by summing the individual cell voltages in series:
60 × 2 V =120 V
NETA Level 2 technicians routinely test station batteries used for control power and protection systems.
Accurate voltage verification is critical for ensuring breaker tripping capability and relay operation during loss of AC power.
NEW QUESTION # 85
OSHA requires testing of a voltmeterafterverifying absence of voltage when testing circuits above what voltage level?
Answer: C
Explanation:
A core safety practice in electrical testing is verifying that your voltage tester is functioning properlyboth before and afterperforming a test for absence of voltage. This practice is commonly summarized as"live- dead-live": test the meter on a known live source, test the circuit (dead check), then re-test on a known live source to ensure the meter didn't fail during the process.
Within OSHA-related electrical safety expectations and common field practice aligned with NETA work, this verification is emphasized especially in higher-voltage contexts, and the flash-card target here isabove 600 V.
Above this threshold, the consequences of a false "dead" reading are severe, and verification of instrument operation becomes non-negotiable.
NETA Level 2 technicians must demonstrate disciplined instrument verification habits. Even if a meter reads zero, it must be proven functional immediately afterward. This prevents relying on a meter with a blown fuse, dead battery, damaged leads, or internal failure-each of which could incorrectly indicate "no voltage" on an energized system.
NEW QUESTION # 86
Transformer oil samples drawn when the oil temperature isbelow 32°F (0°C)may:
Answer: C
Explanation:
At low temperatures, free water can solidify and remain suspended, preventing accurate detection. NETA Level 2 technicians must consider temperature effects when interpreting oil analysis results.
NEW QUESTION # 87
A series circuit contains two resistors. One resistor dissipates 10 W and the other dissipates 15 W. What is the total power dissipation?
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 # 88
Cells are connected inparallelin order to increase:
Answer: B
Explanation:
When cells are connected in parallel, the voltage of the battery bank remains the same as a single cell, but the current capacity (ampere-hours)increases. Parallel connections allow multiple cells to share load current, increasing the total available current without increasing voltage. NETA Level 2 technicians frequently encounter parallel battery strings in control power systems and must understand this relationship when evaluating capacity, load testing, and charger performance.
NEW QUESTION # 89
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