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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Safety | 15% | - Electrically Safe Work Conditions
|
| Topic 2: Electrical Testing Fundamentals and Theory | 25% | - Electrical Mathematics
|
| Topic 3: Systems and Commissioning | 5% | - System Testing
|
| Topic 4: Component Testing | 55% | - Capacitors, Reactors & Batteries
|
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NEW QUESTION # 22
A 3-phase, 480 V system supplies a balanced load drawing50 A line currentat a0.85 lagging power factor.
What is thetotal real powerdelivered to the load?
Answer: D
Explanation:
Real power in a three-phase system is calculated using:
P = #3 × V_L × I_L × PF
P = 1.732 × 480 × 50 × 0.85
P #35,300 W (35.3 kW)
NETA Level 2 technicians must be able to correctly apply three-phase power equations during load verification, commissioning, and troubleshooting. Errors in power calculations can lead to incorrect conclusions regarding transformer loading, feeder capacity, and protective device coordination.
NEW QUESTION # 23
Polarization Index (PI) is defined as the ratio of insulation resistance measured at:
Answer: B
Explanation:
Polarization Index evaluates insulation quality over time and is calculated as:
PI = IR at 10 minutes ÷ IR at 1 minute.
NETA Level 2 technicians use PI testing to assess insulation dryness, cleanliness, and aging.
NEW QUESTION # 24
You arrive to perform acceptance testing on a newly installed indoor 15 kV switchgear lineup. Covers are removed and conductors are exposed with taped ends. What is thecorrect initial action?
Answer: C
Explanation:
Before any testing or inspection begins, NETA safety practices require verification of anelectrically safe work condition. Even newly installed equipment may be energized unintentionally or improperly isolated.
Exposed conductors increase the risk of shock and arc flash.
The correct action is tovisually confirm that all sources of power have been de-energized, followed by properlockout/tagoutprocedures. This ensures no unexpected energization can occur during testing activities.
NETA Level 2 technicians must never assume equipment is safe based on installation status. Safety verification always precedes inspection, testing, or commissioning work.
NEW QUESTION # 25
Which portion of an electrical transmission system experiences faultsmost frequently?
Answer: A
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 # 26
The smallest particle of a substance that still retains the properties of that substance is a:
Answer: A
Explanation:
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.
NEW QUESTION # 27
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