ENADE Engenharia Elétrica Practice Questions - ENADE Engenharia Elétrica - Exame Nacional de Desempenho dos Estudantes Exam - ENADE Engenharia Elétrica Practice Questions - ENADE Engenharia Elétrica - Exame Nacional de Desempenho dos Estudantes Exam

Question 1

Under Brazilian Federal Law No. 6,496/1977 and the CONFEA/CREA system regulations, what is the primary legal and professional purpose of the Technical Responsibility Note (Anotação de Responsabilidade Técnica - ART)?

It legally defines the professional responsible for an engineering service or project, registers technical authorship, and forms the basis for the professional's technical collection (Acervo Técnico). It serves exclusively as a municipal tax receipt (ISS) and commercial billing authorization for engineering consulting firms. It functions as an automatic environmental licensing clearance issued directly by the regional engineering council to bypass IBAMA review. It transfers all civil, labor, and criminal liabilities of an engineering failure entirely to the regional CREA autarchy.

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Question 2

Brazilian Regulatory Standard NR-10 (Safety in Electrical Installations and Services) defines safety perimeters around live electrical parts. How are the Risk Zone (Zona de Risco - ZR) and Controlled Zone (Zona Controlada - ZC) defined regarding access and intervention?

The Risk Zone is the space adjacent to live parts accessible only by authorized professionals using appropriate personal protective equipment and procedures; the Controlled Zone is an outer buffer restricted to authorized personnel. The Risk Zone is open to general maintenance staff provided they wear standard cotton overalls, whereas the Controlled Zone requires full dielectric isolation. The Controlled Zone surrounds de-energized and grounded circuits only, while the Risk Zone applies exclusively to high-voltage transmission lines exceeding 230 kV. Both Risk and Controlled zones allow unrestricted pedestrian access if warning tape and general caution signage are displayed on the floor.

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Question 3

According to NR-10 item 10.5.1, what is the mandatory chronological sequence of procedures required to formally consider an electrical installation de-energized before maintenance?

1) Disconnection; 2) Lockout and tagout; 3) Verification of voltage absence; 4) Installation of temporary grounding; 5) Protection of adjacent live elements; 6) Signage and signaling. 1) Verification of voltage absence; 2) Disconnection; 3) Signage; 4) Installation of temporary grounding; 5) Lockout; 6) Protection of adjacent elements. 1) Installation of temporary grounding; 2) Disconnection; 3) Lockout; 4) Verification of voltage absence; 5) Signage; 6) Protection of adjacent elements. 1) Lockout and tagout; 2) Disconnection; 3) Protection of adjacent live elements; 4) Verification of voltage absence; 5) Signage; 6) Temporary grounding.

Correct Answer:

1) Disconnection; 2) Lockout and tagout; 3) Verification of voltage absence; 4) Installation of temporary grounding; 5) Protection of adjacent live elements; 6) Signage and signaling.

Question 4

In the context of the Brazilian National Environmental Policy (PNMA - Law 6.938/1981) and CONAMA Resolution 001/1986, which statement correctly evaluates the environmental impact assessment for major power generation projects?

Hydroelectric power plants with significant reservoir flooding require an Environmental Impact Study and Report (EIA/RIMA) with public hearings, whereas utility-scale solar and wind projects undergo specific simplified or regular licensing based on local ecosystem sensitivity. All renewable energy plants (solar, wind, and hydro under 50 MW) are completely exempt from any state or federal environmental licensing in Brazil. The EIA/RIMA is a confidential document prepared solely for corporate board approval and is legally prohibited from being accessed by affected local communities. Environmental licensing in Brazil consists of a single permanent permit issued prior to construction that eliminates the need for installation or operating licenses.

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Question 5

The Brazilian National Interconnected System (SIN), operated by the ONS, features a hydrothermal power matrix with a high penetration of non-dispatchable variable renewables (wind and solar). What is the operational purpose of the Marginal Cost of Operation (CMO) in the centralized economic dispatch?

It represents the expected cost to supply one additional megawatt-hour of demand over the optimization horizon, balancing immediate thermal fuel costs against future water storage value. It establishes a fixed government tax levied on all renewable generators to subsidize coal imports. It dictates the retail flat tariff paid by residential low-voltage consumers under the regulated market (ACR). It sets the penalty fine charged to transmission concessionaires whenever line losses exceed 2%.

Correct Answer:

It represents the expected cost to supply one additional megawatt-hour of demand over the optimization horizon, balancing immediate thermal fuel costs against future water storage value.

Question 1

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Prepare with the ENADE Engenharia Elétrica Practice Questions - ENADE Engenharia Elétrica - Exame Nacional de Desempenho dos Estudantes Exam practice quiz. This question bank includes 100 questions covering power, current, circuit, load, and voltage. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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ENADE Engenharia Elétrica Practice Questions - ENADE Engenharia Elétrica - Exame Nacional de Desempenho dos Estudantes Exam

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ENADE Engenharia Elétrica Practice Questions - ENADE Engenharia Elétrica - Exame Nacional de Desempenho dos Estudantes Exam

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