Questões de Concurso Para engenheiro de equipamento júnior - mecânica

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Q431376 Engenharia Mecânica
Um fluido ideal, sem viscosidade e incompressível, escoa por um tubo horizontal de seção quadrada de lado L1 = 2,0 cm. Esse tubo, a partir de um certo ponto, se expande de modo a ter, a partir desse ponto, o lado L2 = 6,0 cm.

Sabendo que a vazão do tubo é de 3,6 litros/s, a variação da pressão ΔP = P2 - P1 , em kPa, é de

Dado: densidade do fluido ρ = 1,0 × 10³ kg/m³
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Q431375 Engenharia Mecânica
Em um processo termodinâmico, um líquido de massa 10,0 g é vaporizado à pressão atmosférica de forma que seu volume varia em 0,12 m³ . Considere a pressão atmosférica igual a 1,0 × 105 Pa, o calor de vaporização do líquido igual a 500 cal/g e 1 cal = 4,0 J.

A variação de energia interna do fluido, durante o processo, em kcal, é de
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Q431374 Engenharia Mecânica
Uma máquina térmica opera ciclicamente absorvendo, a cada ciclo, calor QA = 2.400 kJ de uma fonte quente a TQ = 600 K e rejeitando calor QR = 1.800 kJ em uma fonte fria com TF = 300 K.

O rendimento r da máquina e a variação total da entropia do sistema e reservatórios, ΔST, ao final de 1 ciclo da máquina são, respectivamente,
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Q431373 Engenharia Mecânica
Uma máquina absorve calor a 300,0 °C e a uma pressão de 10 atm e despeja calor no ar a 240,0 °C à pressão de 1 atm.
Considerando 1 atm = 1,0 × 105 Pa, o rendimento máximo possível para essa máquina é de
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Q431372 Engenharia Mecânica
imagem-001.jpg

Uma máquina térmica opera utilizando um mol de um gás ideal, operando em ciclo, como descrito na figura, onde: A

 B processo isobárico, B

 C processo isocórico, C

A processo adiabático. Tem-se VC = 4 VA, PA = 8 PC.

O rendimento térmico r do processo é de
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Q431371 Engenharia Mecânica
Um refrigerador de Carnot opera em ciclos retirando uma quantidade QA = 1.000 kJ de calor da fonte fria e rejeitando uma quantidade de calor QR = 1.250 kJ em uma fonte quente à temperatura TQ = 300 K.

A temperatura da fonte fria TF, em K, é
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Q313134 Português
O “gigolô das palavras”, como o cronista se caracteriza no Texto I, entende sua escrita como

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Q313133 Português
Segundo os Textos I e II, a linguagem é

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Q276497 Inglês
Text II

The Underwater Centre secures its biggest ever contract – worth $1.3million - to train Russian saturation divers


Your Oil and Gas News Magazine The world's leading commercial diver and Remotely Operated Vehicle (ROV) training facility, based in the Scottish Highlands and Australia, has secured its biggest ever contract – worth US$ 1.3 million – to train Russian saturation divers.

The award cements its reputation as a major service provider for the growing worldwide oil and gas industry. The men, already experienced air divers, were trained on saturation procedures and techniques and will receive the Australian Diver Accreditation Scheme (ADAS) and the Closed Bell certification. More advanced than the ADAS, the Closed Bell is the certification appropriate to deep water dives of 60 meters / 200 feet, using a trimix tank with 16 percent oxygen (O2). During the training, divers lived in a chamber for up to 28 days, which was pressurized to the same pressure of the sea, exactly at the depth that they will be working at. Living and working at pressure mean that they can be transported quickly and efficiently to the work site under the water without decompression stops, allowing divers to work in much greater depths and for much longer periods of time. MRTS Managing Director Alexander Kolikov said: “Oil and gas firms in Russia are currently facing a skills shortage due to the rapidly increasing amount of exploration work underway at the moment. By investing in the training of our divers in saturation diving, we are addressing this need for experts in maintenance and repair activities vital to maintaining Russia's subsea infrastructure." Steve Ham, General Manager at the Fort William Centre said: “We were delighted when MRTS chose The Underwater Centre to train its divers in saturation diving, and I think this is testament to the hard work we have been putting in to ensure our reputation as a world-class training facility. Available at: . Retrieved on: 28 June 2012. Adapted.
In Text II, Steve Ham, General Manager at the Fort William Centre, is
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Q276496 Inglês
Text II

The Underwater Centre secures its biggest ever contract – worth $1.3million - to train Russian saturation divers


Your Oil and Gas News Magazine The world's leading commercial diver and Remotely Operated Vehicle (ROV) training facility, based in the Scottish Highlands and Australia, has secured its biggest ever contract – worth US$ 1.3 million – to train Russian saturation divers.

The award cements its reputation as a major service provider for the growing worldwide oil and gas industry. The men, already experienced air divers, were trained on saturation procedures and techniques and will receive the Australian Diver Accreditation Scheme (ADAS) and the Closed Bell certification. More advanced than the ADAS, the Closed Bell is the certification appropriate to deep water dives of 60 meters / 200 feet, using a trimix tank with 16 percent oxygen (O2). During the training, divers lived in a chamber for up to 28 days, which was pressurized to the same pressure of the sea, exactly at the depth that they will be working at. Living and working at pressure mean that they can be transported quickly and efficiently to the work site under the water without decompression stops, allowing divers to work in much greater depths and for much longer periods of time. MRTS Managing Director Alexander Kolikov said: “Oil and gas firms in Russia are currently facing a skills shortage due to the rapidly increasing amount of exploration work underway at the moment. By investing in the training of our divers in saturation diving, we are addressing this need for experts in maintenance and repair activities vital to maintaining Russia's subsea infrastructure." Steve Ham, General Manager at the Fort William Centre said: “We were delighted when MRTS chose The Underwater Centre to train its divers in saturation diving, and I think this is testament to the hard work we have been putting in to ensure our reputation as a world-class training facility. Available at: . Retrieved on: 28 June 2012. Adapted.
In Text II, Director Kolikov explains that the
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Q276495 Inglês
Text II

The Underwater Centre secures its biggest ever contract – worth $1.3million - to train Russian saturation divers


Your Oil and Gas News Magazine The world's leading commercial diver and Remotely Operated Vehicle (ROV) training facility, based in the Scottish Highlands and Australia, has secured its biggest ever contract – worth US$ 1.3 million – to train Russian saturation divers.

The award cements its reputation as a major service provider for the growing worldwide oil and gas industry. The men, already experienced air divers, were trained on saturation procedures and techniques and will receive the Australian Diver Accreditation Scheme (ADAS) and the Closed Bell certification. More advanced than the ADAS, the Closed Bell is the certification appropriate to deep water dives of 60 meters / 200 feet, using a trimix tank with 16 percent oxygen (O2). During the training, divers lived in a chamber for up to 28 days, which was pressurized to the same pressure of the sea, exactly at the depth that they will be working at. Living and working at pressure mean that they can be transported quickly and efficiently to the work site under the water without decompression stops, allowing divers to work in much greater depths and for much longer periods of time. MRTS Managing Director Alexander Kolikov said: “Oil and gas firms in Russia are currently facing a skills shortage due to the rapidly increasing amount of exploration work underway at the moment. By investing in the training of our divers in saturation diving, we are addressing this need for experts in maintenance and repair activities vital to maintaining Russia's subsea infrastructure." Steve Ham, General Manager at the Fort William Centre said: “We were delighted when MRTS chose The Underwater Centre to train its divers in saturation diving, and I think this is testament to the hard work we have been putting in to ensure our reputation as a world-class training facility. Available at: . Retrieved on: 28 June 2012. Adapted.
About the training, it is stated in Text II that
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Q276494 Inglês
Text II

The Underwater Centre secures its biggest ever contract – worth $1.3million - to train Russian saturation divers


Your Oil and Gas News Magazine The world's leading commercial diver and Remotely Operated Vehicle (ROV) training facility, based in the Scottish Highlands and Australia, has secured its biggest ever contract – worth US$ 1.3 million – to train Russian saturation divers.

The award cements its reputation as a major service provider for the growing worldwide oil and gas industry. The men, already experienced air divers, were trained on saturation procedures and techniques and will receive the Australian Diver Accreditation Scheme (ADAS) and the Closed Bell certification. More advanced than the ADAS, the Closed Bell is the certification appropriate to deep water dives of 60 meters / 200 feet, using a trimix tank with 16 percent oxygen (O2). During the training, divers lived in a chamber for up to 28 days, which was pressurized to the same pressure of the sea, exactly at the depth that they will be working at. Living and working at pressure mean that they can be transported quickly and efficiently to the work site under the water without decompression stops, allowing divers to work in much greater depths and for much longer periods of time. MRTS Managing Director Alexander Kolikov said: “Oil and gas firms in Russia are currently facing a skills shortage due to the rapidly increasing amount of exploration work underway at the moment. By investing in the training of our divers in saturation diving, we are addressing this need for experts in maintenance and repair activities vital to maintaining Russia's subsea infrastructure." Steve Ham, General Manager at the Fort William Centre said: “We were delighted when MRTS chose The Underwater Centre to train its divers in saturation diving, and I think this is testament to the hard work we have been putting in to ensure our reputation as a world-class training facility. Available at: . Retrieved on: 28 June 2012. Adapted.
In Text II, when the author states that the divers completed an air course prior to the saturation diver training, he means that
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Q276493 Inglês
Text II

The Underwater Centre secures its biggest ever contract – worth $1.3million - to train Russian saturation divers


Your Oil and Gas News Magazine The world's leading commercial diver and Remotely Operated Vehicle (ROV) training facility, based in the Scottish Highlands and Australia, has secured its biggest ever contract – worth US$ 1.3 million – to train Russian saturation divers.

The award cements its reputation as a major service provider for the growing worldwide oil and gas industry. The men, already experienced air divers, were trained on saturation procedures and techniques and will receive the Australian Diver Accreditation Scheme (ADAS) and the Closed Bell certification. More advanced than the ADAS, the Closed Bell is the certification appropriate to deep water dives of 60 meters / 200 feet, using a trimix tank with 16 percent oxygen (O2). During the training, divers lived in a chamber for up to 28 days, which was pressurized to the same pressure of the sea, exactly at the depth that they will be working at. Living and working at pressure mean that they can be transported quickly and efficiently to the work site under the water without decompression stops, allowing divers to work in much greater depths and for much longer periods of time. MRTS Managing Director Alexander Kolikov said: “Oil and gas firms in Russia are currently facing a skills shortage due to the rapidly increasing amount of exploration work underway at the moment. By investing in the training of our divers in saturation diving, we are addressing this need for experts in maintenance and repair activities vital to maintaining Russia's subsea infrastructure." Steve Ham, General Manager at the Fort William Centre said: “We were delighted when MRTS chose The Underwater Centre to train its divers in saturation diving, and I think this is testament to the hard work we have been putting in to ensure our reputation as a world-class training facility. Available at: . Retrieved on: 28 June 2012. Adapted.
In Text II, the possessive pronoun its (line 6) refers to
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Q276492 Inglês
In Text I, the word do in the fragments: “when they do occur"(line 38); “they do not risk being faced"(lines 43-44) and “workers must do their job"(line 47) respectively, fulfill the role of
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Q276491 Inglês
In Text I, the author mentions Fukushima (line 21) in order to
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Q276490 Inglês
In Text I, the word/expression in boldface type is similar to the one in italics in
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Q276488 Inglês
In Text I, it becomes clear that in order to detect and suppress a petrochemical fire, it
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Q276487 Português
De acordo com a norma-padrão o pronome se pode ser deslocado para depois do verbo destacado em:
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Q276484 Português
No texto, a expressão às vezes(L.68-69) apresenta o sinal indicativo de crase. Na seguinte frase, o a deveria também apresentar esse sinal:
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Respostas
161: B
162: E
163: A
164: B
165: D
166: B
167: D
168: B
169: D
170: E
171: B
172: B
173: A
174: A
175: B
176: C
177: C
178: B
179: B
180: D