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NETA NETA_2 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Systems and Commissioning5%- System-Level Testing
  • 1. Commissioning procedures
    • 2. System verification and documentation
      Topic 2: Component Testing55%- Electrical Equipment Testing
      • 1. Cables and insulation diagnostics
        • 2. Circuit breakers testing procedures
          • 3. Protective devices and relays overview
            • 4. Transformers insulation resistance testing
              Topic 3: Safety15%- Electrical Safety Fundamentals
              • 1. Hazard identification and risk mitigation
                • 2. Lockout/Tagout procedures
                  • 3. Arc flash and shock hazard awareness
                    Topic 4: Electrical Testing Fundamentals and Theory25%- Basic Electrical Theory
                    • 1. Ohm's law and power relationships
                      • 2. AC/DC fundamentals
                        - Measurement Principles
                        • 1. Instrumentation usage
                          • 2. Test data interpretation

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                            NETA_2 PDF、NETA_2無料試験

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                            NETA Level 2 Certified Assistant Electrical Testing Specialist 認定 NETA_2 試験問題 (Q28-Q33):

                            質問 # 28
                            On an electrical schematic, adot on a current transformer symbolindicates:

                            正解：D

                            解説：
                            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.


                            質問 # 29
                            A delta-connected load has aphase impedance of 12 #and is supplied from a480 V line-to-line source. What is theline current?

                            正解：D

                            解説：
                            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.


                            質問 # 30
                            A tagout device must be able to withstand a minimum pull force of:

                            正解：C

                            解説：
                            Tagout devices are required to be durable enough to remain attached and legible under typical industrial conditions. A common OSHA-based minimum strength requirement cited in training and field practice is that tagout devices must withstand at least50 pounds of forceto prevent accidental detachment or removal.
                            NETA Level 2 objectives reinforce that LOTO is not paperwork-it is a physical hazard control program.
                            Tags must be secured using non-reusable, self-locking means such as a nylon cable tie that meets strength requirements. If a tag can be easily pulled off, it fails as a control measure and increases the likelihood of unauthorized operation.
                            Even though tagout does not physically prevent operation like lockout, it still must provide reliable warning and procedural control. Ensuring tag integrity is part of the technician's responsibility when applying or verifying hazardous energy control practices before testing or commissioning.


                            質問 # 31
                            What is theminimum oxygen concentrationallowed before entering a transformer or similar enclosed electrical space?

                            正解：A

                            解説：
                            An oxygen concentration of11.5%represents a dangerous condition that can rapidly impair physical and cognitive function. NETA safety guidance requires oxygen levels to be verified before entry into confined or enclosed spaces such as transformers. Entry below safe oxygen thresholds requires specialized respiratory protection and controls.


                            質問 # 32
                            On an electrical schematic, adot on a current transformer symbolindicates:

                            正解：D

                            解説：
                            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.


                            質問 # 33
                            ......

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