NETA_2クラムメディア、NETA_2出題範囲

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NETA NETA_2 Exam Syllabus Topics:

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

                            >> NETA_2クラムメディア <<

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                            NETA Level 2 Certified Assistant Electrical Testing Specialist 認定 NETA_2 試験問題 (Q51-Q56):

                            質問 # 51
                            What is theminimum oxygen concentrationallowed before entering a transformer or similar enclosed electrical space?

                            正解：B

                            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 # 52
                            When may anunqualified personenter theLimited Approach Boundary?

                            正解：C

                            解説：
                            The Limited Approach Boundary defines the minimum distance from exposed energized parts that unqualified persons arenever permitted to cross. Entry into this space is restricted to qualified persons who understand the hazards and are trained to apply proper protective measures.
                            NETA safety objectives emphasize that escorting, PPE, or voltage level does not override qualification requirements. Only qualified individuals with appropriate training and authorization may enter the Limited Approach Boundary. This rule is foundational to preventing shock injuries and is strictly enforced during testing, inspection, and commissioning activities.


                            質問 # 53
                            Using a typical breaker control diagram, which coil is most commonly associated with theanti-pump function
                            ?

                            正解：B

                            解説：
                            Theanti-pump relay coilprevents repeated closing attempts if the close command remains energized after a breaker closes and trips. This protects mechanical components and ensures controlled operation. NETA Level
                            2 technicians must verify anti-pump operation during control circuit testing to ensure breakers cannot continuously reclose under fault conditions.


                            質問 # 54
                            The smallest particle of a substance that still retains the properties of that substance is a:

                            正解：C

                            解説：
                            Amoleculeis the smallest unit of a substance that retains its chemical and physical properties. This basic scientific principle supports understanding of insulating materials, gases, and liquids used in electrical equipment, particularly when discussing dielectric behavior and contamination effects.


                            質問 # 55
                            A series circuit contains two resistors. One resistor dissipates 10 W and the other dissipates 15 W. What is the total power dissipation?

                            正解：A

                            解説：
                            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.


                            質問 # 56
                            ......

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