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| Section | Weight | Objectives |
|---|---|---|
| Component Testing | 55% | - Rotating Machinery
|
| Safety | 15% | - Regulatory Standards
|
| Electrical Testing Fundamentals and Theory | 25% | - Electrical Mathematics
|
| Systems and Commissioning | 5% | - Commissioning Practices
|
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NEW QUESTION # 47
In which three-phase configuration areline current and phase current equal?
Answer: C
Explanation:
In awye (star)connection, line current equals phase current. In delta systems, line current is #3 times phase current. NETA Level 2 technicians must recognize this distinction when interpreting ammeter readings, evaluating load balance, and performing commissioning tests on three-phase systems.
NEW QUESTION # 48
When making a resistance measurement, which ohmmeter range should be selectedinitially?
Answer: A
Explanation:
Starting with thelowest resistance rangeprovides maximum sensitivity and allows the technician to determine whether resistance is within the expected low-ohmic range. This approach supports accurate measurements during continuity testing, bolted-connection checks, and component verification.
NEW QUESTION # 49
A piece of wire that is0.001 inchesin diameter and12 incheslong is defined as onemil-foot.
Answer: B
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 # 50
On an electrical schematic, adot on a current transformer symbolindicates:
Answer: B
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 # 51
What is theRestricted Approach Boundaryfor a69 kVsystem?
Answer: C
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 # 52
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