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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Systems and Commissioning | 5% | - System Testing
|
| Topic 2: Electrical Testing Fundamentals and Theory | 25% | - Electrical Mathematics
|
| Topic 3: Component Testing | 55% | - Transformers
|
| Topic 4: Safety | 15% | - Risk Assessment
|
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NEW QUESTION # 74
In apurely inductive circuit, what is the phase relationship between voltage and current?
Answer: B
Explanation:
In a purely inductive circuit, current lags voltage by90 degrees, meaning voltage leads current by 90°. This phase relationship is foundational to understanding AC circuit behavior, protective relay operation, and power factor calculations-all within the expected knowledge scope of a NETA Level 2 technician.
NEW QUESTION # 75
What is the recommendedminimum insulation resistance valuefor motor windings manufactured before
1970?
Answer: D
Explanation:
For older motor windings, NETA guidance recognizes that insulation systems were often less robust than modern designs. The recommended minimum insulation resistance is100 megohms per kV of rated voltage plus 1 megohm.
This formula provides a baseline for evaluating insulation condition during acceptance or maintenance testing.
NETA Level 2 technicians must not only perform insulation resistance tests correctly, but also interpret results in the context of equipment age, voltage rating, and service conditions. Results below recommended minimums indicate potential moisture, contamination, or insulation degradation requiring corrective action.
NEW QUESTION # 76
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?
Answer: D
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 # 77
On a circuit breaker equipped with a solid-stateLSIGtrip unit, what does the"I"represent?
Answer: A
Explanation:
LSIG stands for Long-time, Short-time, Instantaneous, and Ground-fault protection. TheInstantaneous element provides rapid tripping with no intentional delay for high-magnitude faults. NETA Level 2 technicians must understand trip unit elements when performing injection testing and verifying protective coordination.
NEW QUESTION # 78
On an electrical schematic, adot on a current transformer symbolindicates:
Answer: C
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 # 79
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