Questões TBG 2023 para Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica

Q2281240

Q2281240 Inglês

Texto associado

Text CB1A2-I

Oppenheimer’s brief advance into astrophysics began with a 1938 paper about neutron stars, which continued in a 1939 installment that further incorporated the principles of Einstein’s general theory of relativity. He then published a third paper on black holes on September 1st, 1939—but at the time, it was scarcely noticed because this was the very day Germany invaded Poland, launching World War II. Oppenheimer never wrote on the topic again.

Even if it hadn’t been overshadowed by war, Oppenheimer’s work on neutron stars and black holes “was not understood to be terribly significant at the time,” says Cathryn Carson, a historian of science at the University of California, Berkeley.

Each paper was written with a different member of the swarm of graduate students that Oppenheimer carefully cultivated. These protégés facilitated his ability to jump between research topics—and ultimately, helped him develop some of his most important contributions to physics.

Oppenheimer’s climactic third paper, written with his student Hartland Snyder, explores the implications of general relativity on the universe’s most massive stars. Although the physicists needed to include some assumptions to simplify the question, they determined that a large enough star would gravitationally collapse indefinitely—and within a finite amount of time, meaning that the objects we now know as black holes could exist.

Internet: <scientificamerican.com> (adapted)

Based on text CB1A2-I, judge the following item.

Oppenheimer’s paper on black holes received little attention at the time it was published.

Certo

Errado

Você errou! Resposta:

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Q2281241

Q2281241 Inglês

Texto associado

Text CB1A2-I

Oppenheimer’s brief advance into astrophysics began with a 1938 paper about neutron stars, which continued in a 1939 installment that further incorporated the principles of Einstein’s general theory of relativity. He then published a third paper on black holes on September 1st, 1939—but at the time, it was scarcely noticed because this was the very day Germany invaded Poland, launching World War II. Oppenheimer never wrote on the topic again.

Even if it hadn’t been overshadowed by war, Oppenheimer’s work on neutron stars and black holes “was not understood to be terribly significant at the time,” says Cathryn Carson, a historian of science at the University of California, Berkeley.

Each paper was written with a different member of the swarm of graduate students that Oppenheimer carefully cultivated. These protégés facilitated his ability to jump between research topics—and ultimately, helped him develop some of his most important contributions to physics.

Oppenheimer’s climactic third paper, written with his student Hartland Snyder, explores the implications of general relativity on the universe’s most massive stars. Although the physicists needed to include some assumptions to simplify the question, they determined that a large enough star would gravitationally collapse indefinitely—and within a finite amount of time, meaning that the objects we now know as black holes could exist.

Internet: <scientificamerican.com> (adapted)

Based on text CB1A2-I, judge the following item.

According to Cathryn Carson, Oppenheimer’s work on neutron stars and black holes was meaningless at the time it was developed.

Certo

Errado

Você errou! Resposta:

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Q2281242

Q2281242 Inglês

Texto associado

Text CB1A2-I

Oppenheimer’s brief advance into astrophysics began with a 1938 paper about neutron stars, which continued in a 1939 installment that further incorporated the principles of Einstein’s general theory of relativity. He then published a third paper on black holes on September 1st, 1939—but at the time, it was scarcely noticed because this was the very day Germany invaded Poland, launching World War II. Oppenheimer never wrote on the topic again.

Even if it hadn’t been overshadowed by war, Oppenheimer’s work on neutron stars and black holes “was not understood to be terribly significant at the time,” says Cathryn Carson, a historian of science at the University of California, Berkeley.

Each paper was written with a different member of the swarm of graduate students that Oppenheimer carefully cultivated. These protégés facilitated his ability to jump between research topics—and ultimately, helped him develop some of his most important contributions to physics.

Oppenheimer’s climactic third paper, written with his student Hartland Snyder, explores the implications of general relativity on the universe’s most massive stars. Although the physicists needed to include some assumptions to simplify the question, they determined that a large enough star would gravitationally collapse indefinitely—and within a finite amount of time, meaning that the objects we now know as black holes could exist.

Internet: <scientificamerican.com> (adapted)

Based on text CB1A2-I, judge the following item.

With the help of his students, Oppenheimer could easily shift from one research topic to another.

Certo

Errado

Você errou! Resposta:

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Q2281243

Q2281243 Inglês

Texto associado

Text CB1A2-I

Oppenheimer’s brief advance into astrophysics began with a 1938 paper about neutron stars, which continued in a 1939 installment that further incorporated the principles of Einstein’s general theory of relativity. He then published a third paper on black holes on September 1st, 1939—but at the time, it was scarcely noticed because this was the very day Germany invaded Poland, launching World War II. Oppenheimer never wrote on the topic again.

Even if it hadn’t been overshadowed by war, Oppenheimer’s work on neutron stars and black holes “was not understood to be terribly significant at the time,” says Cathryn Carson, a historian of science at the University of California, Berkeley.

Each paper was written with a different member of the swarm of graduate students that Oppenheimer carefully cultivated. These protégés facilitated his ability to jump between research topics—and ultimately, helped him develop some of his most important contributions to physics.

Oppenheimer’s climactic third paper, written with his student Hartland Snyder, explores the implications of general relativity on the universe’s most massive stars. Although the physicists needed to include some assumptions to simplify the question, they determined that a large enough star would gravitationally collapse indefinitely—and within a finite amount of time, meaning that the objects we now know as black holes could exist.

Internet: <scientificamerican.com> (adapted)

Based on text CB1A2-I, judge the following item.

The word “war” (first sentence of the second paragraph) refers to any war.

Certo

Errado

Você errou! Resposta:

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Q2281244

Q2281244 Inglês

Texto associado

Text CB1A2-I

Oppenheimer’s brief advance into astrophysics began with a 1938 paper about neutron stars, which continued in a 1939 installment that further incorporated the principles of Einstein’s general theory of relativity. He then published a third paper on black holes on September 1st, 1939—but at the time, it was scarcely noticed because this was the very day Germany invaded Poland, launching World War II. Oppenheimer never wrote on the topic again.

Even if it hadn’t been overshadowed by war, Oppenheimer’s work on neutron stars and black holes “was not understood to be terribly significant at the time,” says Cathryn Carson, a historian of science at the University of California, Berkeley.

Each paper was written with a different member of the swarm of graduate students that Oppenheimer carefully cultivated. These protégés facilitated his ability to jump between research topics—and ultimately, helped him develop some of his most important contributions to physics.

Oppenheimer’s climactic third paper, written with his student Hartland Snyder, explores the implications of general relativity on the universe’s most massive stars. Although the physicists needed to include some assumptions to simplify the question, they determined that a large enough star would gravitationally collapse indefinitely—and within a finite amount of time, meaning that the objects we now know as black holes could exist.

Internet: <scientificamerican.com> (adapted)

Based on text CB1A2-I, judge the following item.

Hartland Snyder helped Oppenheimer write his least relevant paper in physics.

Certo

Errado

Você errou! Resposta:

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Q2281245

Q2281245 Inglês

Texto associado

Text CB1A2-I

Oppenheimer’s brief advance into astrophysics began with a 1938 paper about neutron stars, which continued in a 1939 installment that further incorporated the principles of Einstein’s general theory of relativity. He then published a third paper on black holes on September 1st, 1939—but at the time, it was scarcely noticed because this was the very day Germany invaded Poland, launching World War II. Oppenheimer never wrote on the topic again.

Even if it hadn’t been overshadowed by war, Oppenheimer’s work on neutron stars and black holes “was not understood to be terribly significant at the time,” says Cathryn Carson, a historian of science at the University of California, Berkeley.

Each paper was written with a different member of the swarm of graduate students that Oppenheimer carefully cultivated. These protégés facilitated his ability to jump between research topics—and ultimately, helped him develop some of his most important contributions to physics.

Oppenheimer’s climactic third paper, written with his student Hartland Snyder, explores the implications of general relativity on the universe’s most massive stars. Although the physicists needed to include some assumptions to simplify the question, they determined that a large enough star would gravitationally collapse indefinitely—and within a finite amount of time, meaning that the objects we now know as black holes could exist.

Internet: <scientificamerican.com> (adapted)

Based on the vocabulary and linguistic aspects of text CB1A2-I, judge the following item.
The pronoun “they” (last sentence of the last paragraph) refers to the word “assumptions”.

Certo

Errado

Você errou! Resposta:

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Q2281246

Q2281246 Inglês

Texto associado

Text CB1A2-I

Oppenheimer’s brief advance into astrophysics began with a 1938 paper about neutron stars, which continued in a 1939 installment that further incorporated the principles of Einstein’s general theory of relativity. He then published a third paper on black holes on September 1st, 1939—but at the time, it was scarcely noticed because this was the very day Germany invaded Poland, launching World War II. Oppenheimer never wrote on the topic again.

Even if it hadn’t been overshadowed by war, Oppenheimer’s work on neutron stars and black holes “was not understood to be terribly significant at the time,” says Cathryn Carson, a historian of science at the University of California, Berkeley.

Each paper was written with a different member of the swarm of graduate students that Oppenheimer carefully cultivated. These protégés facilitated his ability to jump between research topics—and ultimately, helped him develop some of his most important contributions to physics.

Oppenheimer’s climactic third paper, written with his student Hartland Snyder, explores the implications of general relativity on the universe’s most massive stars. Although the physicists needed to include some assumptions to simplify the question, they determined that a large enough star would gravitationally collapse indefinitely—and within a finite amount of time, meaning that the objects we now know as black holes could exist.

Internet: <scientificamerican.com> (adapted)

Based on the vocabulary and linguistic aspects of text CB1A2-I, judge the following item.

The word “overshadowed” (first sentence of the second paragraph) means, in the context of text CB1A2-I, “made less noticeable”.

Certo

Errado

Você errou! Resposta:

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Q2281247

Q2281247 Inglês

Texto associado

Text CB1A2-I

Oppenheimer’s brief advance into astrophysics began with a 1938 paper about neutron stars, which continued in a 1939 installment that further incorporated the principles of Einstein’s general theory of relativity. He then published a third paper on black holes on September 1st, 1939—but at the time, it was scarcely noticed because this was the very day Germany invaded Poland, launching World War II. Oppenheimer never wrote on the topic again.

Even if it hadn’t been overshadowed by war, Oppenheimer’s work on neutron stars and black holes “was not understood to be terribly significant at the time,” says Cathryn Carson, a historian of science at the University of California, Berkeley.

Each paper was written with a different member of the swarm of graduate students that Oppenheimer carefully cultivated. These protégés facilitated his ability to jump between research topics—and ultimately, helped him develop some of his most important contributions to physics.

Oppenheimer’s climactic third paper, written with his student Hartland Snyder, explores the implications of general relativity on the universe’s most massive stars. Although the physicists needed to include some assumptions to simplify the question, they determined that a large enough star would gravitationally collapse indefinitely—and within a finite amount of time, meaning that the objects we now know as black holes could exist.

Internet: <scientificamerican.com> (adapted)

Based on the vocabulary and linguistic aspects of text CB1A2-I, judge the following item.

The word “installment” (first sentence of the first paragraph) means, in the context of text CB1A2-I, “to make it ready to use”.

Certo

Errado

Você errou! Resposta:

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Q2281248

Q2281248 Inglês

Texto associado

Text CB1A2-I

Oppenheimer’s brief advance into astrophysics began with a 1938 paper about neutron stars, which continued in a 1939 installment that further incorporated the principles of Einstein’s general theory of relativity. He then published a third paper on black holes on September 1st, 1939—but at the time, it was scarcely noticed because this was the very day Germany invaded Poland, launching World War II. Oppenheimer never wrote on the topic again.

Even if it hadn’t been overshadowed by war, Oppenheimer’s work on neutron stars and black holes “was not understood to be terribly significant at the time,” says Cathryn Carson, a historian of science at the University of California, Berkeley.

Each paper was written with a different member of the swarm of graduate students that Oppenheimer carefully cultivated. These protégés facilitated his ability to jump between research topics—and ultimately, helped him develop some of his most important contributions to physics.

Oppenheimer’s climactic third paper, written with his student Hartland Snyder, explores the implications of general relativity on the universe’s most massive stars. Although the physicists needed to include some assumptions to simplify the question, they determined that a large enough star would gravitationally collapse indefinitely—and within a finite amount of time, meaning that the objects we now know as black holes could exist.

Internet: <scientificamerican.com> (adapted)

Based on the vocabulary and linguistic aspects of text CB1A2-I, judge the following item.

The word “physicists” means “medical doctors”.

Certo

Errado

Você errou! Resposta:

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Q2281249

Q2281249 Inglês

Texto associado

Text CB1A2-I

Oppenheimer’s brief advance into astrophysics began with a 1938 paper about neutron stars, which continued in a 1939 installment that further incorporated the principles of Einstein’s general theory of relativity. He then published a third paper on black holes on September 1st, 1939—but at the time, it was scarcely noticed because this was the very day Germany invaded Poland, launching World War II. Oppenheimer never wrote on the topic again.

Even if it hadn’t been overshadowed by war, Oppenheimer’s work on neutron stars and black holes “was not understood to be terribly significant at the time,” says Cathryn Carson, a historian of science at the University of California, Berkeley.

Each paper was written with a different member of the swarm of graduate students that Oppenheimer carefully cultivated. These protégés facilitated his ability to jump between research topics—and ultimately, helped him develop some of his most important contributions to physics.

Oppenheimer’s climactic third paper, written with his student Hartland Snyder, explores the implications of general relativity on the universe’s most massive stars. Although the physicists needed to include some assumptions to simplify the question, they determined that a large enough star would gravitationally collapse indefinitely—and within a finite amount of time, meaning that the objects we now know as black holes could exist.

Internet: <scientificamerican.com> (adapted)

Based on the vocabulary and linguistic aspects of text CB1A2-I, judge the following item.

Graduate students are people studying for a master’s degree or doctorate.

Certo

Errado

Você errou! Resposta:

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Q2283145

Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TBG Prova: CESPE / CEBRASPE - 2023 - TBG - Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica |

Q2283145 Engenharia Elétrica

A respeito da teoria eletromagnética, julgue o item a seguir.

O campo magnético produzido pela corrente elétrica que circula em uma bobina de cobre depende do número de espiras da bobina e da magnitude da corrente.

Certo

Errado

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Q2283146

Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TBG Prova: CESPE / CEBRASPE - 2023 - TBG - Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica |

Q2283146 Engenharia Elétrica

A respeito da teoria eletromagnética, julgue o item a seguir.

A lei de Lenz é uma generalização da lei de Ampère, associando a geração de campo magnético à circulação de corrente elétrica.

Certo

Errado

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Q2283147

Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TBG Prova: CESPE / CEBRASPE - 2023 - TBG - Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica |

Q2283147 Engenharia Elétrica

A respeito da teoria eletromagnética, julgue o item a seguir.

A lei de Faraday descreve o fenômeno da indução eletromagnética, concluindo que a força eletromotriz induzida em um condutor elétrico pela variação de fluxo magnético que o concatena terá sentido que se oponha à variação desse fluxo.

Certo

Errado

Você errou! Resposta:

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Q2283148

Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TBG Prova: CESPE / CEBRASPE - 2023 - TBG - Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica |

Q2283148 Engenharia Elétrica

Considerando um transformador de potência trifásico de 138 kV/13,8 kV, em frequência de 60 Hz, com conexão em Y no lado de alta tensão e que opera como abaixador de tensão e com carga nominal, julgue o seguinte item.

A corrente nominal de linha do lado de alta tensão é igual a 10% da corrente nominal de linha do lado de baixa tensão.

Certo

Errado

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Q2283149

Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TBG Prova: CESPE / CEBRASPE - 2023 - TBG - Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica |

Q2283149 Engenharia Elétrica

Considerando um transformador de potência trifásico de 138 kV/13,8 kV, em frequência de 60 Hz, com conexão em Y no lado de alta tensão e que opera como abaixador de tensão e com carga nominal, julgue o seguinte item.

A corrente nominal de fase no lado de alta tensão é igual a 10% da corrente nominal de fase do lado de baixa tensão.

Certo

Errado

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Q2283150

Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TBG Prova: CESPE / CEBRASPE - 2023 - TBG - Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica |

Q2283150 Engenharia Elétrica

Considerando um transformador de potência trifásico de 138 kV/13,8 kV, em frequência de 60 Hz, com conexão em Y no lado de alta tensão e que opera como abaixador de tensão e com carga nominal, julgue o seguinte item.

Se a corrente de linha do lado de baixa tensão for igual a (1.156/138) A, a potência aparente nominal do transformador será de aproximadamente 200 kVA.

Certo

Errado

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Q2283151

Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TBG Prova: CESPE / CEBRASPE - 2023 - TBG - Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica |

Q2283151 Engenharia Elétrica

Considerando um transformador de potência trifásico de 138 kV/13,8 kV, em frequência de 60 Hz, com conexão em Y no lado de alta tensão e que opera como abaixador de tensão e com carga nominal, julgue o seguinte item.

Nesse tipo de transformador, existem perdas por efeito Joule.

Certo

Errado

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Q2283152

Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TBG Prova: CESPE / CEBRASPE - 2023 - TBG - Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica |

Q2283152 Engenharia Elétrica

Considerando um transformador de potência trifásico de 138 kV/13,8 kV, em frequência de 60 Hz, com conexão em Y no lado de alta tensão e que opera como abaixador de tensão e com carga nominal, julgue o seguinte item.

Se o secundário tiver conexão em triângulo em vez de conexão em Y, as tensões de 180 Hz aplicadas à carga serão maiores.

Certo

Errado

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Q2283153

Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TBG Prova: CESPE / CEBRASPE - 2023 - TBG - Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica |

Q2283153 Engenharia Elétrica

Julgue o próximo item, acerca de máquinas síncronas.

Em um alternador, o enrolamento do rotor é denominado enrolamento de armadura.

Certo

Errado

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Q2283154

Ano: 2023 Banca: CESPE / CEBRASPE Órgão: TBG Prova: CESPE / CEBRASPE - 2023 - TBG - Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica |

Q2283154 Engenharia Elétrica

Julgue o próximo item, acerca de máquinas síncronas.

A velocidade de rotação do eixo de um motor síncrono trifásico depende diretamente da velocidade de rotação do campo magnético girante do estator.

Certo

Errado

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Questões de Concurso Público TBG 2023 para Engenheiro Júnior – Ênfase: Projetos e Obras, Elétrica

Foram encontradas 100 questões