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| Section | Weight | Objectives |
|---|---|---|
| Safety | 15% | - Regulatory Standards
|
| Component Testing | 55% | - Protective Relays & Devices
|
| Electrical Testing Fundamentals and Theory | 25% | - Electrical Mathematics
|
| Systems and Commissioning | 5% | - System Testing
|
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NEW QUESTION # 77
A series circuit contains two resistors. One resistor dissipates 10 W and the other dissipates 15 W. What is the total power dissipation?
Answer: C
Explanation:
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.
NEW QUESTION # 78
The smallest particle of a substance that still retains the properties of that substance is a:
Answer: B
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 # 79
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 # 80
Harmonics in an electrical system increase the risk of fire and electric shock.
Answer: B
Explanation:
Harmonics cause increased heating in conductors, transformers, and neutral paths, which can degrade insulation and increase fire risk. They can also create unexpected voltage conditions and elevated touch potentials. NETA Level 2 technicians must recognize harmonic-related risks when evaluating system performance, especially in facilities with nonlinear loads such as VFDs and power electronics.
NEW QUESTION # 81
A delta-connected load has aphase impedance of 12 #and is supplied from a480 V line-to-line source. What is theline current?
Answer: A
Explanation:
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.
NEW QUESTION # 82
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