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NETA NETA_2 Exam Syllabus Topics:

SectionWeightObjectives
Electrical Testing Fundamentals and Theory25%- Basic Electrical Theory
  • 1. Ohm's law and power relationships
    • 2. AC/DC fundamentals
      - Measurement Principles
      • 1. Test data interpretation
        • 2. Instrumentation usage
          Safety15%- Electrical Safety Fundamentals
          • 1. Arc flash and shock hazard awareness
            • 2. Hazard identification and risk mitigation
              • 3. Lockout/Tagout procedures
                Systems and Commissioning5%- System-Level Testing
                • 1. System verification and documentation
                  • 2. Commissioning procedures
                    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

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                            NETA Level 2 Certified Assistant Electrical Testing Specialist Sample Questions (Q40-Q45):

                            NEW QUESTION # 40
                            During charging of lead-acid batteries, whichexplosive gasmay be generated?

                            Answer: D

                            Explanation:
                            Hydrogen gas is produced during battery charging due to electrolysis of water in the electrolyte. Hydrogen is highly explosive at relatively low concentrations. NETA Level 2 technicians must ensure adequate ventilation, eliminate ignition sources, and follow battery safety procedures during testing and maintenance.


                            NEW QUESTION # 41
                            Following an insulation resistance test on a motor circuit, what procedure is required to safely return the circuit to a neutral charge state?

                            Answer: D

                            Explanation:
                            Insulation resistance testing leaves stored electrical charge in the insulation. NETA standards require grounding the circuit forfour times the duration of the applied test voltageto safely dissipate stored energy.
                            Failure to do so can result in dangerous shock hazards even after testing is complete.


                            NEW QUESTION # 42
                            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 # 43
                            Determine theRMS voltageof a sinusoidal waveform displayed on an oscilloscope showing 0.45 V peak with a vertical sensitivity of 0.2 V/division.

                            Answer: A

                            Explanation:
                            RMS voltage for a sine wave equals peak voltage divided by #2:
                            V### = 0.45 ÷ 1.414 #0.32 V
                            NETA Level 2 technicians must understand RMS values because most electrical measurements and equipment ratings are based on RMS quantities, not peak values.


                            NEW QUESTION # 44
                            Which portion of an electrical transmission system experiences faultsmost frequently?

                            Answer: B

                            Explanation:
                            Overhead transmission lines experience the highest frequency of faults due to their direct exposure to environmental conditions. Wind, lightning, ice, vegetation contact, animals, and pollution all contribute to transient and permanent fault conditions on overhead conductors. Unlike underground systems, overhead lines are not shielded from weather-related events.
                            NETA Level 2 technicians must understand fault likelihood when interpreting protective relay operations, breaker trips, and event records. Many relay schemes are designed with reclosing logic specifically because overhead line faults are often temporary. This understanding supports proper commissioning, testing of protective devices, and evaluation of fault-clearing performance.


                            NEW QUESTION # 45
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