有難い-実用的なNETA_2ミシュレーション問題試験-試験の準備方法NETA_2再テスト

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NETA NETA_2 Exam Syllabus Topics:

SectionWeightObjectives
Systems and Commissioning5%- System Testing
  • 1. Power system analysis, grounding, coordination
- Commissioning Practices
  • 1. Documentation, acceptance, reporting
Safety15%- Regulatory Standards
  • 1. OSHA, NFPA, ANSI, IEEE, NETA standards
- Electrically Safe Work Conditions
  • 1. Hazardous energy control
  • 2. Lockout/Tagout procedures
- Risk Assessment
  • 1. Safe work practices and hazard recognition
  • 2. Shock and arc-flash protection boundaries
- Personal Protective Equipment (PPE)
  • 1. Selection, use, inspection and storage
Electrical Testing Fundamentals and Theory25%- Basic Electrical Theory
  • 1. Circuit analysis and calculations
  • 2. AC/DC circuits, Ohm's law, power, energy
- Measurement Principles
  • 1. Measurement techniques and units
  • 2. Instrumentation, accuracy, calibration
- Electrical Mathematics
  • 1. Trigonometry, vectors, phasors
Component Testing55%- Capacitors, Reactors & Batteries
  • 1. Performance and condition testing
- Circuit Breakers & Switchgear
  • 1. Mechanical, electrical, insulation tests
- Protective Relays & Devices
  • 1. Settings, testing, coordination
- Rotating Machinery
  • 1. Motors, generators, testing methods
- Transformers
  • 1. Tests, procedures, acceptance criteria
- Cables & Conductors
  • 1. Insulation resistance, continuity, fault location

>> NETA_2ミシュレーション問題 <<

NETA_2再テスト & NETA_2試験関連赤本

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NETA Level 2 Certified Assistant Electrical Testing Specialist 認定 NETA_2 試験問題 (Q20-Q25):

質問 # 20
What is the purpose of ablow-out coilin a circuit breaker?

正解：D

解説：
A blow-out coil produces a magnetic field that forces the arc into an arc chute, lengthening and cooling it to aid extinction. NETA Level 2 technicians must understand arc-control mechanisms when inspecting breaker design and evaluating interruption performance.


質問 # 21
Which portion of an electrical transmission system experiences faultsmost frequently?

正解：B

解説：
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.


質問 # 22
Electrical equipment working space must have at least two entrances of sufficient area to permit access.

正解：D

解説：
Working space and egress requirements exist to ensure personnel canquickly exitan area in the event of an arc flash, fire, or other emergency. Codes and safety practices commonly requiretwo means of egress(two entrances) when certain conditions are met, particularly when large equipment, high fault current, or certain room layouts increase risk and limit escape paths.
From a NETA Level 2 safety standpoint, the practical takeaway is that equipment rooms must not trap workers. Adequate working clearances and egress routes must be verified as part of safe work planning- especially during commissioning where multiple panels may be open, temporary barriers may exist, and contractors may crowd the space.
While the exact conditions and thresholds can vary by NEC article and equipment rating, the concept tested here matches the flash-card: providing at least two entrances is considered a compliant requirement for safe access to electrical equipment working space in the relevant scenario context.


質問 # 23
A transformer contains insulating fluid with aspecific gravity greater than 1. From where should the oil sample be drawn?

正解：C

解説：
Specific gravity greater than 1 means the insulating fluid isheavier than water. Any free water contamination will settlebelowthe oil. To avoid collecting settled contaminants and to obtain a representative oil sample, NETA practice requires sampling from thetop of the tank.
Correct sampling technique is critical for accurate dielectric, moisture, and dissolved gas analysis results.
NETA Level 2 technicians must understand fluid properties to avoid misleading test conclusions.


質問 # 24
The dataplate on a condenser bushing listsC2values. What do these values represent?

正解：D

解説：
C2 values represent the capacitance and power factor measured between the test tap and ground flange. These values are critical for evaluating bushing condition and detecting contamination, moisture ingress, or insulation deterioration during acceptance and maintenance testing.


質問 # 25
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