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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
|
作為一位 NETA_2 考生而言，作好充分的準備可以幫助您通過考試。VCESoft 的 NETA_2 題庫覆蓋了最新的 NETA_2 考試指南及考試真題題型。NETA_2 隸屬于 NETA 認證考試科目。我們的 NETA_2 認證考題已經幫助很多考生通過考試，試題質量和考題的覆蓋率都有保證，保證考生權利不受任何損失。獲取 NETA_2 考試認證證書可以用來實施一些複雜多變的工程。
問題 #45
Which trigonometric function is equal to theopposite side divided by the hypotenuseof a right triangle?
答案：B
解題說明：
Thesineof an angle is defined as the ratio of the opposite side to the hypotenuse. Trigonometry is used in power factor analysis, phasor relationships, impedance calculations, and AC circuit analysis. NETA Level 2 technicians must understand these relationships when evaluating voltage, current, and phase angles in testing scenarios.
問題 #46
The three-phase connection in whichone end of each winding is connected togetheris called which configuration?
答案：C
解題說明：
In awye (star)connection, one end of each phase winding is tied together at a common point known as the neutral. This configuration allows for both line-to-line and line-to-neutral voltages and is commonly used in distribution systems.
NETA Level 2 technicians must understand transformer and system configurations because they affect voltage relationships, current flow, grounding methods, and testing procedures. Identifying a wye connection is essential when interpreting nameplates, calculating phase voltages, and performing ratio or insulation testing.
問題 #47
In apurely inductive circuit, what is the phase relationship between voltage and current?
答案：D
解題說明：
In a purely inductive circuit, current lags voltage by90 degrees, meaning voltage leads current by 90°. This phase relationship is foundational to understanding AC circuit behavior, protective relay operation, and power factor calculations-all within the expected knowledge scope of a NETA Level 2 technician.
問題 #48
What is meant by adead-tank circuit breaker?
答案：C
解題說明：
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.
問題 #49
How many connection points are typically found on a Kelvin bridge used for low-resistance measurements?
答案：D
解題說明：
A Kelvin bridge, also known as a four-wire resistance measurement device, usesfour connection pointsto accurately measure very low resistances. These consist of twocurrent terminalsand twopotential (voltage) terminals.
This configuration eliminates the effects of lead resistance and contact resistance, which can significantly distort measurements when testing bolted connections, bus joints, and grounding conductors. NETA Level 2 technicians routinely use Kelvin methods when performing low-resistance ohmic measurements during acceptance and maintenance testing.
Using fewer than four terminals would result in inaccurate readings, especially at milliohm or micro-ohm levels. Understanding this principle ensures proper test setup and reliable data interpretation.
問題 #50
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最新NETA_2題庫資訊: https://www.vcesoft.com/NETA_2-pdf.html
2026 VCESoft最新的NETA_2 PDF版考試題庫和NETA_2考試問題和答案免費分享：https://drive.google.com/open?id=1JMcTDM-nyzZF3tG4NieOXmuFbuOaju73