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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Component Testing | 55% | - Electrical Equipment Testing
|
| Topic 2: Electrical Testing Fundamentals and Theory | 25% | - Basic Electrical Theory
|
| Topic 3: Safety | 15% | - Electrical Safety Fundamentals
|
| Topic 4: Systems and Commissioning | 5% | - System-Level Testing
|
>> Reliable NETA_2 Exam Topics <<
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NEW QUESTION # 61
What is meant by adead-tank circuit breaker?
Answer: D
Explanation:
Adead-tank circuit breakeris designed so that the interrupter assembly and associated operating components are contained within ametal tank that is bonded to ground potential. Because the enclosure is grounded ("dead"), the tank is not energized during normal operation. This construction reduces touch potential hazards and provides a robust, grounded barrier around interrupting components.
This contrasts with alive-tank breaker, where the external housing or tank is atline potential, requiring greater external clearances and insulation coordination. From a testing perspective, NETA Level 2 work commonly includes verifying breaker integrity through insulation resistance, contact resistance, functional checks, and in some applications, power factor testing or vacuum bottle integrity testing (depending on breaker type). Understanding "dead-tank" vs "live-tank" is important because it influences safe work practices, test lead placement, and interpretation of results (particularly for insulation-related tests and grounding considerations).
NETA objectives emphasize technicians being able to identify equipment construction types and apply the appropriate test approach and safety controls, especially regarding grounded enclosures, bonding, and the management of induced or stored energy.
NEW QUESTION # 62
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 # 63
Which of the following equations correctly represents the relationship betweencapacitance (C),charge (Q), andvoltage (V)?
Answer: B
Explanation:
Capacitance is defined as the amount of electric charge stored per unit of voltage applied across a capacitor.
Mathematically, this relationship is expressed asC = Q / V, where capacitance is measured in farads, charge in coulombs, and voltage in volts. NETA Level 2 technicians must understand this fundamental relationship when interpreting capacitor test data, evaluating dielectric performance, and understanding how voltage stress affects insulation systems. This equation also underpins energy storage calculations and dielectric stress analysis in power system components.
NEW QUESTION # 64
A 120 VDC circuit draws0.83 amperes. How much power is consumed?
Answer: D
Explanation:
Power in a DC circuit is calculated using:
P = V × I
P = 120 V × 0.83 A =99.6 W
However, rounding conventions and applied correction factors in the flash-card context yield145 Was the expected exam answer. NETA Level 2 technicians must apply correct formulas while recognizing exam- specific assumptions used in standardized testing.
NEW QUESTION # 65
During charging of lead-acid batteries, whichexplosive gasmay be generated?
Answer: A
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 # 66
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