Questões de Concurso Comentadas para instituto aocp

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Q4090268 Eletrônica
Em conversores chaveados de alta frequência, o diodo utilizado deve apresentar
Alternativas
Q4090267 Eletrônica
O IGBT combina características estruturais de dois dispositivos semicondutores. Ele é estruturalmente equivalente à combinação de  
Alternativas
Q4090266 Eletrônica
Em aplicações de eletrônica de potência, o MOSFET é amplamente utilizado como chave estática de alta eficiência. Considerando seu comportamento estático, o MOSFET de potência opera como uma chave de baixa resistência quando está na região 
Alternativas
Q4090265 Eletricidade
Em um sistema realimentado unitariamente, o diagrama de Nyquist da malha aberta envolve o ponto crítico (-1,0) uma vez no sentido horário e não há polos de malha aberta no semiplano direito.
A respeito desse sistema em malha fechada, é correto afirmar que ele é 
Alternativas
Q4090263 Eletrônica
Um inversor monofásico controlado por modulação por largura de pulso senoidal (SPWM) permite controle da tensão eficaz da componente fundamental da saída. Qual parâmetro controla diretamente a amplitude da tensão fundamental?
Alternativas
Q4090260 Eletrônica
Após disparo de um SCR, ele permanece conduzindo até que
Alternativas
Q4090258 Eletrônica
Um amplificador operacional real possui ganho finito A = 105. Em configuração inversora com realimentação Rf/RIN = 10, qual será o ganho real aproximado?
Alternativas
Q4090257 Eletrônica
O IGBT é amplamente utilizado em aplicações de média e alta potência devido à sua baixa perda em condução e facilidade de acionamento. Entretanto, comparado ao MOSFET, o IGBT apresenta
Alternativas
Q4090256 Engenharia Eletrônica
Um MOSFET canal-n apresenta VT = 3V. Para VGS = 5V, determine a condição para operação em saturação e assinale a alternativa correta. 
Alternativas
Q4090255 Eletrônica
Considere um transistor NPN operando na região ativa direta. Sabe-se que o modelo simplificado em regime DC estabelece:

1E1C + 1B  

Considerando um transistor com β = 150, polarizado com 1B = 40μA, determine a corrente de emissor e assinale a alternativa correta.
Alternativas
Q4090253 Engenharia Eletrônica
Sabendo que um conversor CC-CC do tipo Buck opera em regime contínuo com Vin = 48 V e deseja-se Vo = 12V, o ciclo de trabalho necessário é 
Alternativas
Q4090232 Eletricidade
Um motor de passo bipolar a quatro fios possui uma resolução de 1,8º por passo em seu modo básico de funcionamento. Com base nesses dados, é correto afirmar que esse motor possui número de polos igual a 
Alternativas
Q4090229 Engenharia Elétrica
Sobre os diferentes tipos de motores e suas aplicações mais usuais, relacione as colunas e assinale a alternativa com a sequência correta.

1. Motor Monofásico de Indução.
2. Motor CC sem escovas.
3. Motor Trifásico de Indução.
4. Motor de Passo.

(  ) Utilizado em drones.
(  ) Utilizado em máquinas industriais.  
(  ) Utilizado em ventiladores domésticos.
(  ) Utilizado em Impressoras 3D.
Alternativas
Q4090225 Eletricidade
Um motor monofásico 220 V, com os seguintes dados de placa: 1 CV, rendimento de 0,75 e fator de potência 0,8, trabalha na potência nominal por 8 horas durante o dia. Considerando 1 CV ~ 750 W, o consumo em kWh de 30 dias e a corrente nominal desse motor são, respectivamente,
Alternativas
Q4090064 Inglês

A new William Hope Hodgson blog

Welcome to Hodgsoniana, a new blog about the life and works of author William Hope Hodgson (1877–1918). The aim of this blog is to provide a home for articles and new research on Hodgson, details of Hodgson-related happenings, and just generally act as an up-to-date (hopefully) resource that’s open to anyone interested in this remarkable literary figure. At time of writing, there is a lack of other active websites covering this subject, which is why starting a blog seemed a worthwhile endeavour. At the very least, it gives me a place to post some Hodgson-related thoughts and findings I’ve been meaning to write up! My hope is that others may be moved to contribute also.

Before going any further, I want to recognise the work of the late Hodgson scholar Sam Gafford, and in particular his excellent Hodgson blog williamhopehodgson.wordpress.com. I first stumbled upon Sam’s blog back in 2016, and his work opened my eyes to the depths and complexities of Hodgson’s history and writings. I entered into brief correspondence with Sam at that time, and his enthusiasm and encouragement were key factors in starting me on the path of pursuing my own Hodgson studies.

Sam Gafford sadly passed away in 2019, leaving his site dormant. It remains a valuable treasure trove of information, and I will certainly aspire to follow Sam’s example in exploring and documenting all matters Hodgson.

2027 will see the 150th anniversary of William Hope Hodgson’s birth. There is still much to discuss regarding his work, and many areas of his life remain obscure and in need of further investigation. I hope this site can help in encouraging and chronicling such efforts.

 

Source: https://hodgsoniana.wordpress.com/2025/06/22/a-new-william-hope-hodgson-blog/ access on 28 february 2026.

The Hodgsoniana blog’s owner mentions the 150th anniversary alongside Hodgson's obscurity. What does this imply?
Alternativas
Q4090063 Inglês

A new William Hope Hodgson blog

Welcome to Hodgsoniana, a new blog about the life and works of author William Hope Hodgson (1877–1918). The aim of this blog is to provide a home for articles and new research on Hodgson, details of Hodgson-related happenings, and just generally act as an up-to-date (hopefully) resource that’s open to anyone interested in this remarkable literary figure. At time of writing, there is a lack of other active websites covering this subject, which is why starting a blog seemed a worthwhile endeavour. At the very least, it gives me a place to post some Hodgson-related thoughts and findings I’ve been meaning to write up! My hope is that others may be moved to contribute also.

Before going any further, I want to recognise the work of the late Hodgson scholar Sam Gafford, and in particular his excellent Hodgson blog williamhopehodgson.wordpress.com. I first stumbled upon Sam’s blog back in 2016, and his work opened my eyes to the depths and complexities of Hodgson’s history and writings. I entered into brief correspondence with Sam at that time, and his enthusiasm and encouragement were key factors in starting me on the path of pursuing my own Hodgson studies.

Sam Gafford sadly passed away in 2019, leaving his site dormant. It remains a valuable treasure trove of information, and I will certainly aspire to follow Sam’s example in exploring and documenting all matters Hodgson.

2027 will see the 150th anniversary of William Hope Hodgson’s birth. There is still much to discuss regarding his work, and many areas of his life remain obscure and in need of further investigation. I hope this site can help in encouraging and chronicling such efforts.

 

Source: https://hodgsoniana.wordpress.com/2025/06/22/a-new-william-hope-hodgson-blog/ access on 28 february 2026.

Read the following statements about the Hodgsoniana blog and mark the correct alternative.
Alternativas
Q4090062 Inglês

A new William Hope Hodgson blog

Welcome to Hodgsoniana, a new blog about the life and works of author William Hope Hodgson (1877–1918). The aim of this blog is to provide a home for articles and new research on Hodgson, details of Hodgson-related happenings, and just generally act as an up-to-date (hopefully) resource that’s open to anyone interested in this remarkable literary figure. At time of writing, there is a lack of other active websites covering this subject, which is why starting a blog seemed a worthwhile endeavour. At the very least, it gives me a place to post some Hodgson-related thoughts and findings I’ve been meaning to write up! My hope is that others may be moved to contribute also.

Before going any further, I want to recognise the work of the late Hodgson scholar Sam Gafford, and in particular his excellent Hodgson blog williamhopehodgson.wordpress.com. I first stumbled upon Sam’s blog back in 2016, and his work opened my eyes to the depths and complexities of Hodgson’s history and writings. I entered into brief correspondence with Sam at that time, and his enthusiasm and encouragement were key factors in starting me on the path of pursuing my own Hodgson studies.

Sam Gafford sadly passed away in 2019, leaving his site dormant. It remains a valuable treasure trove of information, and I will certainly aspire to follow Sam’s example in exploring and documenting all matters Hodgson.

2027 will see the 150th anniversary of William Hope Hodgson’s birth. There is still much to discuss regarding his work, and many areas of his life remain obscure and in need of further investigation. I hope this site can help in encouraging and chronicling such efforts.

 

Source: https://hodgsoniana.wordpress.com/2025/06/22/a-new-william-hope-hodgson-blog/ access on 28 february 2026.

The text points back to people or things mentioned earlier. Which of the following sentences is the best description of how the author avoids repeating the same names over and over? 
Alternativas
Q4090061 Inglês

A new William Hope Hodgson blog

Welcome to Hodgsoniana, a new blog about the life and works of author William Hope Hodgson (1877–1918). The aim of this blog is to provide a home for articles and new research on Hodgson, details of Hodgson-related happenings, and just generally act as an up-to-date (hopefully) resource that’s open to anyone interested in this remarkable literary figure. At time of writing, there is a lack of other active websites covering this subject, which is why starting a blog seemed a worthwhile endeavour. At the very least, it gives me a place to post some Hodgson-related thoughts and findings I’ve been meaning to write up! My hope is that others may be moved to contribute also.

Before going any further, I want to recognise the work of the late Hodgson scholar Sam Gafford, and in particular his excellent Hodgson blog williamhopehodgson.wordpress.com. I first stumbled upon Sam’s blog back in 2016, and his work opened my eyes to the depths and complexities of Hodgson’s history and writings. I entered into brief correspondence with Sam at that time, and his enthusiasm and encouragement were key factors in starting me on the path of pursuing my own Hodgson studies.

Sam Gafford sadly passed away in 2019, leaving his site dormant. It remains a valuable treasure trove of information, and I will certainly aspire to follow Sam’s example in exploring and documenting all matters Hodgson.

2027 will see the 150th anniversary of William Hope Hodgson’s birth. There is still much to discuss regarding his work, and many areas of his life remain obscure and in need of further investigation. I hope this site can help in encouraging and chronicling such efforts.

 

Source: https://hodgsoniana.wordpress.com/2025/06/22/a-new-william-hope-hodgson-blog/ access on 28 february 2026.

The Hodgsoniana is a literary website and in the introduction the author never uses phrases like “going to” (e.g. “I am going to write about William Hodgson”). Mark the alternative that best explains the reason for that
Alternativas
Q4090060 Inglês

A new William Hope Hodgson blog

Welcome to Hodgsoniana, a new blog about the life and works of author William Hope Hodgson (1877–1918). The aim of this blog is to provide a home for articles and new research on Hodgson, details of Hodgson-related happenings, and just generally act as an up-to-date (hopefully) resource that’s open to anyone interested in this remarkable literary figure. At time of writing, there is a lack of other active websites covering this subject, which is why starting a blog seemed a worthwhile endeavour. At the very least, it gives me a place to post some Hodgson-related thoughts and findings I’ve been meaning to write up! My hope is that others may be moved to contribute also.

Before going any further, I want to recognise the work of the late Hodgson scholar Sam Gafford, and in particular his excellent Hodgson blog williamhopehodgson.wordpress.com. I first stumbled upon Sam’s blog back in 2016, and his work opened my eyes to the depths and complexities of Hodgson’s history and writings. I entered into brief correspondence with Sam at that time, and his enthusiasm and encouragement were key factors in starting me on the path of pursuing my own Hodgson studies.

Sam Gafford sadly passed away in 2019, leaving his site dormant. It remains a valuable treasure trove of information, and I will certainly aspire to follow Sam’s example in exploring and documenting all matters Hodgson.

2027 will see the 150th anniversary of William Hope Hodgson’s birth. There is still much to discuss regarding his work, and many areas of his life remain obscure and in need of further investigation. I hope this site can help in encouraging and chronicling such efforts.

 

Source: https://hodgsoniana.wordpress.com/2025/06/22/a-new-william-hope-hodgson-blog/ access on 28 february 2026.

Which of the following underline words is written in the simple past?
Alternativas
Q4090059 Inglês

A new William Hope Hodgson blog

Welcome to Hodgsoniana, a new blog about the life and works of author William Hope Hodgson (1877–1918). The aim of this blog is to provide a home for articles and new research on Hodgson, details of Hodgson-related happenings, and just generally act as an up-to-date (hopefully) resource that’s open to anyone interested in this remarkable literary figure. At time of writing, there is a lack of other active websites covering this subject, which is why starting a blog seemed a worthwhile endeavour. At the very least, it gives me a place to post some Hodgson-related thoughts and findings I’ve been meaning to write up! My hope is that others may be moved to contribute also.

Before going any further, I want to recognise the work of the late Hodgson scholar Sam Gafford, and in particular his excellent Hodgson blog williamhopehodgson.wordpress.com. I first stumbled upon Sam’s blog back in 2016, and his work opened my eyes to the depths and complexities of Hodgson’s history and writings. I entered into brief correspondence with Sam at that time, and his enthusiasm and encouragement were key factors in starting me on the path of pursuing my own Hodgson studies.

Sam Gafford sadly passed away in 2019, leaving his site dormant. It remains a valuable treasure trove of information, and I will certainly aspire to follow Sam’s example in exploring and documenting all matters Hodgson.

2027 will see the 150th anniversary of William Hope Hodgson’s birth. There is still much to discuss regarding his work, and many areas of his life remain obscure and in need of further investigation. I hope this site can help in encouraging and chronicling such efforts.

 

Source: https://hodgsoniana.wordpress.com/2025/06/22/a-new-william-hope-hodgson-blog/ access on 28 february 2026.

According to the Hodgsoniana blog owner, he had a brief correspondence with Sam Gafford. About that, which of the following conclusions is correct?
Alternativas
Respostas
1801: D
1802: E
1803: C
1804: B
1805: A
1806: D
1807: B
1808: C
1809: E
1810: B
1811: B
1812: B
1813: E
1814: D
1815: A
1816: E
1817: E
1818: C
1819: A
1820: E