Magna Concursos

Foram encontradas 50 questões.

4081320 Ano: 2026
Disciplina: Engenharia de Automação
Banca: SELECON
Orgão: EMGEPRON
Provas:

Em um sistema de controle PID, quando há erro, mas não há variação do erro, a parcela D:

 

Provas

Questão presente nas seguintes provas
4081314 Ano: 2026
Disciplina: Engenharia Eletrônica
Banca: SELECON
Orgão: EMGEPRON
Provas:

Um contador em anel tradicional com Flip-Flops tipo D possui a saída Q do último Flip-Flop conectada à entrada D do primeiro Flip-Flop. Nessa configuração, ele opera com N estados. Se ao invés de conectar a saída Q for conectada a saída Q-barra, o número de estados do contador passará a ser:

 

Provas

Questão presente nas seguintes provas
4081312 Ano: 2026
Disciplina: Engenharia Eletrônica
Banca: SELECON
Orgão: EMGEPRON
Provas:

Em um MOSFET Canal N de depleção em operação, para que a corrente entre Dreno e Fonte seja zero, é sempre necessário que a tensão entre:

 

Provas

Questão presente nas seguintes provas
4081311 Ano: 2026
Disciplina: Engenharia Eletrônica
Banca: SELECON
Orgão: EMGEPRON
Provas:

Ao se comparar os conversores CC-CC tipo SEPIC e tipo BOOST, pode-se afirmar que:

 

Provas

Questão presente nas seguintes provas
4081306 Ano: 2026
Disciplina: Engenharia Eletrônica
Banca: SELECON
Orgão: EMGEPRON
Provas:

Uma diferença fundamental entre transistores BJT e CMOS é que:

 

Provas

Questão presente nas seguintes provas

The World of AI

How libraries are integrating and navigating this powerful technology

A hot topic in many industries, generative artificial intelligence (generative AI) has increasingly occupied our cultural consciousness since the large language model ChatGPT debuted for public use in November 2022. Some libraries are playing a unique role in charting a path through this new technological territory as the boundaries of AI’s uses and impacts continue to shift.

“Librarians are asking if AI will render us obsolete — it won’t,” says Nick Tanzi, library technology consultant, author, and assistant director of South Huntington Public Library in Huntington Station, New York. “We are information professionals, and our information landscape has just grown in complexity.”

AI’s critics have sounded the alarm about the models’ tendency to reinforce and amplify any biases found in the data they are trained on. Others have raised concerns about false information and privacy, as well as plagiarism and copyright, issues of particular concern to academic and school libraries. How can users be sure the output generated by AI tools is legal, ethical, and accurate?

“There’s an old saying: ‘Garbage in, garbage out,’” says Elissa Malespina, teacher-librarian at Union (N.J.) High School, who writes the AI School Librarians Newsletter. “In the world of AI, it’s a matter of ‘data in, data out.’ Make sure you’ve got a clear sense of not just how AI operates but also where it’s drawing its knowledge from. It’s all about being an informed user.”

American Libraries spoke with five technology experts, educators, and librarians who are pioneering the use of generative AI at their institutions. They discuss how it’s being used in libraries, what ethical concerns have emerged, and how librarians can educate their communities on navigating these powerful technologies.

By Emily Udell | March 1, 2024 Fonte: https//americanlibrariesmagazine.org Acessado em: 16/01/2026. Acesso em 16/01/2026.

O trecho “'There’s an old saying: ‘Garbage in, garbage out,’” says Elissa Malespina'" (4º parágrafo) encontra-se no direct speech. Ao transpô-lo para o indirect speech, tem-se como resultado a seguinte estrutura:

 

Provas

Questão presente nas seguintes provas
4081225 Ano: 2026
Disciplina: Matemática
Banca: SELECON
Orgão: EMGEPRON
Provas:

As percentagens de álcool nos combustíveis X e Y são, respectivamente, 24,5% e 27%. A percentagem de álcool de uma mistura contendo 8,4 litros do combustível X e 12,6 litros do combustível Y é:

 

Provas

Questão presente nas seguintes provas

The World of AI

How libraries are integrating and navigating this powerful technology

A hot topic in many industries, generative artificial intelligence (generative AI) has increasingly occupied our cultural consciousness since the large language model ChatGPT debuted for public use in November 2022. Some libraries are playing a unique role in charting a path through this new technological territory as the boundaries of AI’s uses and impacts continue to shift.

“Librarians are asking if AI will render us obsolete — it won’t,” says Nick Tanzi, library technology consultant, author, and assistant director of South Huntington Public Library in Huntington Station, New York. “We are information professionals, and our information landscape has just grown in complexity.”

AI’s critics have sounded the alarm about the models’ tendency to reinforce and amplify any biases found in the data they are trained on. Others have raised concerns about false information and privacy, as well as plagiarism and copyright, issues of particular concern to academic and school libraries. How can users be sure the output generated by AI tools is legal, ethical, and accurate?

“There’s an old saying: ‘Garbage in, garbage out,’” says Elissa Malespina, teacher-librarian at Union (N.J.) High School, who writes the AI School Librarians Newsletter. “In the world of AI, it’s a matter of ‘data in, data out.’ Make sure you’ve got a clear sense of not just how AI operates but also where it’s drawing its knowledge from. It’s all about being an informed user.”

American Libraries spoke with five technology experts, educators, and librarians who are pioneering the use of generative AI at their institutions. They discuss how it’s being used in libraries, what ethical concerns have emerged, and how librarians can educate their communities on navigating these powerful technologies.

By Emily Udell | March 1, 2024 Fonte: https//americanlibrariesmagazine.org Acessado em: 16/01/2026. Acesso em 16/01/2026.

A partir da leitura do texto "The World of AI", de Emily Udell, pode-se afirmar que:

 

Provas

Questão presente nas seguintes provas
4080135 Ano: 2026
Disciplina: Engenharia Eletrônica
Banca: SELECON
Orgão: EMGEPRON
Provas:

Uma empresa de semicondutores está desenvolvendo um novo circuito integrado que disponibiliza portas NAND CMOS de duas entradas com a mesma tecnologia que já vinha utilizando, mas decidiu aumentar o FAN-IN. A consequência usualmente mais relevante dessa decisão consiste no fato de que as portas ficarão:

 

Provas

Questão presente nas seguintes provas
4080134 Ano: 2026
Disciplina: Engenharia Eletrônica
Banca: SELECON
Orgão: EMGEPRON
Provas:

Ao se comparar os nomes das pinagens de MOSFET, IGBT e BJT, nota-se que a(s):

 

Provas

Questão presente nas seguintes provas