Questões de Concurso Comentadas para engenheiro mecânico

Missa do Galo (excertos)

    Nunca pude esquecer a conversação que tive com uma senhora, há muitos anos, contava eu dezessete, ela trinta. Era noite de Natal. Havendo ajustado com um vizinho irmos à missa do galo, preferi não dormir; combinei que eu iria acordá-lo à meia-noite.

    A casa em que eu estava hospedado era a do escrivão Meneses, que fora casado, em primeiras núpcias, com uma de minhas primas. A segunda mulher, Conceição, e a mãe desta acolheram-me bem, quando vim de Mangaratiba para o Rio de Janeiro, meses antes, a estudar preparatórios. Vivia tranqüilo, naquela casa assobradada da Rua do Senado, com os meus livros, poucas relações, alguns passeios. A família era pequena, o escrivão, a mulher, a sogra e duas escravas. Costumes velhos. Às dez horas da noite toda a gente estava nos quartos; às dez e meia a casa dormia. Nunca tinha ido ao teatro, e mais de uma vez, ouvindo dizer ao Meneses que ia ao teatro, pedi-lhe que me levasse consigo. Nessas ocasiões, a sogra fazia uma careta, e as escravas riam à socapa; ele não respondia, vestia-se, saía e só tornava na manhã seguinte. Mais tarde é que eu soube que o teatro era um eufemismo em ação. Meneses trazia amores com uma senhora, separada do marido, e dormia fora de casa uma vez por semana. Conceição padecera, a princípio, com a existência da comborça; mas, afinal, resignara-se, acostumara-se, e acabou achando que era muito direito.

    Boa Conceição! Chamavam-lhe “a santa”, e fazia jus ao título, tão facilmente suportava os esquecimentos do marido. Em verdade, era um temperamento moderado, sem extremos, nem grandes lágrimas, nem grandes risos. No capítulo de que trato, dava para maometana; aceitaria um harém, com as aparências salvas. Deus me perdoe, se a julgo mal. Tudo nela era atenuado e passivo. O próprio rosto era mediano, nem bonito nem feio. Era o que chamamos uma pessoa simpática. Não dizia mal de ninguém, perdoava tudo. Não sabia odiar; pode ser até que não soubesse amar.

(ASSIS, Machado de. Missa do Galo. In Contos Consagrados – Rio de Janeiro: Ediouro; São Paulo: Publifolha, 1997. P. 75) 

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility

    There are three main types of nuclear reactors: power, research, and test. Research and test reactors as scientific tools are more common than most people realize. While power reactors frequently appear in newspaper headlines and are conspicuous because of their size and power, research reactors can be quietly tucked away, even in the midst of a college campus. Power reactors generate heat, which can easily be converted to other useable forms of energy, such as electricity. Research reactors operate at very low thermal power levels – so low, in fact, that they do not even require any type of forced cooling. They are used to measure nuclear parameters and other characteristics, which can then be used to build other reactors or to design experiments for test reactors. Test reactors are more powerful than research reactors and are able to produce much more intense radiation fields. Though they are still much less powerful than the power reactors, they generate enough heat to require a closed-loop forced-circulation coolant system. This system will remove the heat from the reactor by transferring it to a secondary cooling system, which releases it into the atmosphere through cooling towers.

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility. Pages 36 to 40. 

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility

    There are three main types of nuclear reactors: power, research, and test. Research and test reactors as scientific tools are more common than most people realize. While power reactors frequently appear in newspaper headlines and are conspicuous because of their size and power, research reactors can be quietly tucked away, even in the midst of a college campus. Power reactors generate heat, which can easily be converted to other useable forms of energy, such as electricity. Research reactors operate at very low thermal power levels – so low, in fact, that they do not even require any type of forced cooling. They are used to measure nuclear parameters and other characteristics, which can then be used to build other reactors or to design experiments for test reactors. Test reactors are more powerful than research reactors and are able to produce much more intense radiation fields. Though they are still much less powerful than the power reactors, they generate enough heat to require a closed-loop forced-circulation coolant system. This system will remove the heat from the reactor by transferring it to a secondary cooling system, which releases it into the atmosphere through cooling towers.

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility. Pages 36 to 40. 

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility

    There are three main types of nuclear reactors: power, research, and test. Research and test reactors as scientific tools are more common than most people realize. While power reactors frequently appear in newspaper headlines and are conspicuous because of their size and power, research reactors can be quietly tucked away, even in the midst of a college campus. Power reactors generate heat, which can easily be converted to other useable forms of energy, such as electricity. Research reactors operate at very low thermal power levels – so low, in fact, that they do not even require any type of forced cooling. They are used to measure nuclear parameters and other characteristics, which can then be used to build other reactors or to design experiments for test reactors. Test reactors are more powerful than research reactors and are able to produce much more intense radiation fields. Though they are still much less powerful than the power reactors, they generate enough heat to require a closed-loop forced-circulation coolant system. This system will remove the heat from the reactor by transferring it to a secondary cooling system, which releases it into the atmosphere through cooling towers.

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility. Pages 36 to 40. 

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility

    There are three main types of nuclear reactors: power, research, and test. Research and test reactors as scientific tools are more common than most people realize. While power reactors frequently appear in newspaper headlines and are conspicuous because of their size and power, research reactors can be quietly tucked away, even in the midst of a college campus. Power reactors generate heat, which can easily be converted to other useable forms of energy, such as electricity. Research reactors operate at very low thermal power levels – so low, in fact, that they do not even require any type of forced cooling. They are used to measure nuclear parameters and other characteristics, which can then be used to build other reactors or to design experiments for test reactors. Test reactors are more powerful than research reactors and are able to produce much more intense radiation fields. Though they are still much less powerful than the power reactors, they generate enough heat to require a closed-loop forced-circulation coolant system. This system will remove the heat from the reactor by transferring it to a secondary cooling system, which releases it into the atmosphere through cooling towers.

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility. Pages 36 to 40.