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Ano: 2012
Banca:
CESGRANRIO
Órgão:
TERMOBAHIA
Prova:
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Termelétrica Júnior - Elétrica |
Q2908090
Engenharia Elétrica
O transporte de energia gerada nas usinas até as estações transformadoras e a interligação com outros sistemas de transporte de energia são realizados por linhas de transmissão. No Brasil, as linhas operam em diversas classes de tensão.
A classe de tensão, em kV, para linhas de subtransmissão (LST) e linhas de transmissão (LT) são, respectivamente,
Ano: 2012
Banca:
CESGRANRIO
Órgão:
TERMOBAHIA
Prova:
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Termelétrica Júnior - Elétrica |
Q2908089
Engenharia Elétrica
O Sistema de Medição para Faturamento (SMF) controlado através dos processos de contabilização de energia no âmbito da Câmara de Comercialização de Energia Elétrica (CCEE), como, também, da apuração das demandas pelo Operador Nacional do Sistema Elétrico (ONS) é composto por diversos elementos.
NÃO constituem um desses elementos os
Ano: 2012
Banca:
CESGRANRIO
Órgão:
TERMOBAHIA
Prova:
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Termelétrica Júnior - Elétrica |
Q2908085
Engenharia Elétrica
No Brasil, a reforma do setor elétrico ocorreu a partir da Constituição de 1988 com o art.175 que estabelece que as novas concessões devem ser licitadas. O modelo estimula a concorrência para aumentar a eficiência e a privatização das empresas, ocasionando um processo de desverticalização das empresas do setor elétrico.
Tal processo deu origem à separação das atividades de geração, transmissão e distribuição, e, no caso da
Ano: 2012
Banca:
CESGRANRIO
Órgão:
TERMOBAHIA
Provas:
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Termelétrica Júnior - Elétrica
|
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Segurança Júnior |
Q2908084
Inglês
Texto associado
Stanford physicists make new form of matter
The laser-cooled quantum gas opens exciting new realms of unconventional superconductivity
The laser-cooled quantum gas opens exciting new realms of unconventional superconductivity
By Max McClure
Stanford University News
Within the exotic world of macroscopic quantum
effects, where fluids flow uphill, wires conduct without
electrical resistance and magnets levitate, there is an
even stranger family of “unconventional” phenomena:
strongly interacting fermions, a class of particles that
are often very difficult to understand on the quantum
level. These materials often defy explanation by
current theoretical physics, but hold enormous
promise for the development of futuristic technologies
as room-temperature superconductors, ultrasensitive
microscopes and quantum computation.
Last week the scientific world was appalled when
a Stanford team made the announcement in Physical
Review Letters that they had created the world’s first
dipolar quantum fermionic gas– “an entirely new
form of quantum matter,” as Stanford applied physics
Professor and lead author Benjamin Lev puts it. Lev
affirmed that this development represents a major
step toward understanding the behavior of these
systems of particles. Until now, research efforts had
focused on cooling bosons – fundamentally different
from fermions, and much easier to work with. But
now the Stanford team extended these techniques to
gases made of the most magnetic atom: a fermionic
isotope of dysprosium with magnetic energies 440
times larger than previously cooled gases.
He explained that when the thermal energy of
some substances drops below a certain critical point,
it used to be impossible to consider its component
particles separately since the material becomes
strongly correlated and its quantum effects become
difficult to understand and study. Nevertheless,
making the material out of a gas of atoms allows it
to become visible. These quantum gases, the coldest
objects known to man, are where researchers can
observe zero-viscosity fluids – superfluids – that are
mathematical cousins of superconductors.
Thus far, the result of the Lev lab’s high-tech efforts
is a tiny ball of ultracold quantum dipolar fluid. But the
researchers have reason to believe that the humble
substance will exhibit the seemingly contradictory
characteristics of both crystals and superfluids. This
combination could lead to quantum liquid crystals.
Or it could yield a supersolid – a hypothetical state
of matter that would, in theory at least, be a solid with
superfluid characteristics.
The researchers have already begun developing a
microscope to make use of the dipolar quantum fluid’s unique characteristics. It is the “cryogenic atom chip
microscope”, a magnetic probe that should measure
magnetic fields with unprecedented sensitivity and
resolution. “This kind of probe may even allow for a
more stable form of quantum computation that uses
exotic quantum matter to process information, known
as a topologically protected quantum computer”,
said Lev. “So this new approach is really incredibly
exciting.”
Available at: <http://news.stanford.edu/news/2012/june/lev-new- -matter-060512.html>. Retrieved on: 5 June 2012. Adapted.
Available at: <http://news.stanford.edu/news/2012/june/lev-new- -matter-060512.html>. Retrieved on: 5 June 2012. Adapted.
According to the text, the cryogenic atom chip microscope
Ano: 2012
Banca:
CESGRANRIO
Órgão:
TERMOBAHIA
Provas:
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Termelétrica Júnior - Elétrica
|
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Segurança Júnior |
Q2908083
Inglês
Texto associado
Stanford physicists make new form of matter
The laser-cooled quantum gas opens exciting new realms of unconventional superconductivity
The laser-cooled quantum gas opens exciting new realms of unconventional superconductivity
By Max McClure
Stanford University News
Within the exotic world of macroscopic quantum
effects, where fluids flow uphill, wires conduct without
electrical resistance and magnets levitate, there is an
even stranger family of “unconventional” phenomena:
strongly interacting fermions, a class of particles that
are often very difficult to understand on the quantum
level. These materials often defy explanation by
current theoretical physics, but hold enormous
promise for the development of futuristic technologies
as room-temperature superconductors, ultrasensitive
microscopes and quantum computation.
Last week the scientific world was appalled when
a Stanford team made the announcement in Physical
Review Letters that they had created the world’s first
dipolar quantum fermionic gas– “an entirely new
form of quantum matter,” as Stanford applied physics
Professor and lead author Benjamin Lev puts it. Lev
affirmed that this development represents a major
step toward understanding the behavior of these
systems of particles. Until now, research efforts had
focused on cooling bosons – fundamentally different
from fermions, and much easier to work with. But
now the Stanford team extended these techniques to
gases made of the most magnetic atom: a fermionic
isotope of dysprosium with magnetic energies 440
times larger than previously cooled gases.
He explained that when the thermal energy of
some substances drops below a certain critical point,
it used to be impossible to consider its component
particles separately since the material becomes
strongly correlated and its quantum effects become
difficult to understand and study. Nevertheless,
making the material out of a gas of atoms allows it
to become visible. These quantum gases, the coldest
objects known to man, are where researchers can
observe zero-viscosity fluids – superfluids – that are
mathematical cousins of superconductors.
Thus far, the result of the Lev lab’s high-tech efforts
is a tiny ball of ultracold quantum dipolar fluid. But the
researchers have reason to believe that the humble
substance will exhibit the seemingly contradictory
characteristics of both crystals and superfluids. This
combination could lead to quantum liquid crystals.
Or it could yield a supersolid – a hypothetical state
of matter that would, in theory at least, be a solid with
superfluid characteristics.
The researchers have already begun developing a
microscope to make use of the dipolar quantum fluid’s unique characteristics. It is the “cryogenic atom chip
microscope”, a magnetic probe that should measure
magnetic fields with unprecedented sensitivity and
resolution. “This kind of probe may even allow for a
more stable form of quantum computation that uses
exotic quantum matter to process information, known
as a topologically protected quantum computer”,
said Lev. “So this new approach is really incredibly
exciting.”
Available at: <http://news.stanford.edu/news/2012/june/lev-new- -matter-060512.html>. Retrieved on: 5 June 2012. Adapted.
Available at: <http://news.stanford.edu/news/2012/june/lev-new- -matter-060512.html>. Retrieved on: 5 June 2012. Adapted.
According to the text, this new material has the opposing qualities of being
Ano: 2012
Banca:
CESGRANRIO
Órgão:
TERMOBAHIA
Provas:
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Termelétrica Júnior - Elétrica
|
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Segurança Júnior |
Q2908082
Inglês
Texto associado
Stanford physicists make new form of matter
The laser-cooled quantum gas opens exciting new realms of unconventional superconductivity
The laser-cooled quantum gas opens exciting new realms of unconventional superconductivity
By Max McClure
Stanford University News
Within the exotic world of macroscopic quantum
effects, where fluids flow uphill, wires conduct without
electrical resistance and magnets levitate, there is an
even stranger family of “unconventional” phenomena:
strongly interacting fermions, a class of particles that
are often very difficult to understand on the quantum
level. These materials often defy explanation by
current theoretical physics, but hold enormous
promise for the development of futuristic technologies
as room-temperature superconductors, ultrasensitive
microscopes and quantum computation.
Last week the scientific world was appalled when
a Stanford team made the announcement in Physical
Review Letters that they had created the world’s first
dipolar quantum fermionic gas– “an entirely new
form of quantum matter,” as Stanford applied physics
Professor and lead author Benjamin Lev puts it. Lev
affirmed that this development represents a major
step toward understanding the behavior of these
systems of particles. Until now, research efforts had
focused on cooling bosons – fundamentally different
from fermions, and much easier to work with. But
now the Stanford team extended these techniques to
gases made of the most magnetic atom: a fermionic
isotope of dysprosium with magnetic energies 440
times larger than previously cooled gases.
He explained that when the thermal energy of
some substances drops below a certain critical point,
it used to be impossible to consider its component
particles separately since the material becomes
strongly correlated and its quantum effects become
difficult to understand and study. Nevertheless,
making the material out of a gas of atoms allows it
to become visible. These quantum gases, the coldest
objects known to man, are where researchers can
observe zero-viscosity fluids – superfluids – that are
mathematical cousins of superconductors.
Thus far, the result of the Lev lab’s high-tech efforts
is a tiny ball of ultracold quantum dipolar fluid. But the
researchers have reason to believe that the humble
substance will exhibit the seemingly contradictory
characteristics of both crystals and superfluids. This
combination could lead to quantum liquid crystals.
Or it could yield a supersolid – a hypothetical state
of matter that would, in theory at least, be a solid with
superfluid characteristics.
The researchers have already begun developing a
microscope to make use of the dipolar quantum fluid’s unique characteristics. It is the “cryogenic atom chip
microscope”, a magnetic probe that should measure
magnetic fields with unprecedented sensitivity and
resolution. “This kind of probe may even allow for a
more stable form of quantum computation that uses
exotic quantum matter to process information, known
as a topologically protected quantum computer”,
said Lev. “So this new approach is really incredibly
exciting.”
Available at: <http://news.stanford.edu/news/2012/june/lev-new- -matter-060512.html>. Retrieved on: 5 June 2012. Adapted.
Available at: <http://news.stanford.edu/news/2012/june/lev-new- -matter-060512.html>. Retrieved on: 5 June 2012. Adapted.
In the text, the word in bold-face type is similar to the one in italics in
Ano: 2012
Banca:
CESGRANRIO
Órgão:
TERMOBAHIA
Provas:
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Termelétrica Júnior - Elétrica
|
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Segurança Júnior |
Q2908081
Inglês
Texto associado
Stanford physicists make new form of matter
The laser-cooled quantum gas opens exciting new realms of unconventional superconductivity
The laser-cooled quantum gas opens exciting new realms of unconventional superconductivity
By Max McClure
Stanford University News
Within the exotic world of macroscopic quantum
effects, where fluids flow uphill, wires conduct without
electrical resistance and magnets levitate, there is an
even stranger family of “unconventional” phenomena:
strongly interacting fermions, a class of particles that
are often very difficult to understand on the quantum
level. These materials often defy explanation by
current theoretical physics, but hold enormous
promise for the development of futuristic technologies
as room-temperature superconductors, ultrasensitive
microscopes and quantum computation.
Last week the scientific world was appalled when
a Stanford team made the announcement in Physical
Review Letters that they had created the world’s first
dipolar quantum fermionic gas– “an entirely new
form of quantum matter,” as Stanford applied physics
Professor and lead author Benjamin Lev puts it. Lev
affirmed that this development represents a major
step toward understanding the behavior of these
systems of particles. Until now, research efforts had
focused on cooling bosons – fundamentally different
from fermions, and much easier to work with. But
now the Stanford team extended these techniques to
gases made of the most magnetic atom: a fermionic
isotope of dysprosium with magnetic energies 440
times larger than previously cooled gases.
He explained that when the thermal energy of
some substances drops below a certain critical point,
it used to be impossible to consider its component
particles separately since the material becomes
strongly correlated and its quantum effects become
difficult to understand and study. Nevertheless,
making the material out of a gas of atoms allows it
to become visible. These quantum gases, the coldest
objects known to man, are where researchers can
observe zero-viscosity fluids – superfluids – that are
mathematical cousins of superconductors.
Thus far, the result of the Lev lab’s high-tech efforts
is a tiny ball of ultracold quantum dipolar fluid. But the
researchers have reason to believe that the humble
substance will exhibit the seemingly contradictory
characteristics of both crystals and superfluids. This
combination could lead to quantum liquid crystals.
Or it could yield a supersolid – a hypothetical state
of matter that would, in theory at least, be a solid with
superfluid characteristics.
The researchers have already begun developing a
microscope to make use of the dipolar quantum fluid’s unique characteristics. It is the “cryogenic atom chip
microscope”, a magnetic probe that should measure
magnetic fields with unprecedented sensitivity and
resolution. “This kind of probe may even allow for a
more stable form of quantum computation that uses
exotic quantum matter to process information, known
as a topologically protected quantum computer”,
said Lev. “So this new approach is really incredibly
exciting.”
Available at: <http://news.stanford.edu/news/2012/june/lev-new- -matter-060512.html>. Retrieved on: 5 June 2012. Adapted.
Available at: <http://news.stanford.edu/news/2012/june/lev-new- -matter-060512.html>. Retrieved on: 5 June 2012. Adapted.
In the second paragraph of the text, it is clear that
Ano: 2012
Banca:
CESGRANRIO
Órgão:
TERMOBAHIA
Provas:
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Termelétrica Júnior - Elétrica
|
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Segurança Júnior |
Q2908080
Inglês
Texto associado
Stanford physicists make new form of matter
The laser-cooled quantum gas opens exciting new realms of unconventional superconductivity
The laser-cooled quantum gas opens exciting new realms of unconventional superconductivity
By Max McClure
Stanford University News
Within the exotic world of macroscopic quantum
effects, where fluids flow uphill, wires conduct without
electrical resistance and magnets levitate, there is an
even stranger family of “unconventional” phenomena:
strongly interacting fermions, a class of particles that
are often very difficult to understand on the quantum
level. These materials often defy explanation by
current theoretical physics, but hold enormous
promise for the development of futuristic technologies
as room-temperature superconductors, ultrasensitive
microscopes and quantum computation.
Last week the scientific world was appalled when
a Stanford team made the announcement in Physical
Review Letters that they had created the world’s first
dipolar quantum fermionic gas– “an entirely new
form of quantum matter,” as Stanford applied physics
Professor and lead author Benjamin Lev puts it. Lev
affirmed that this development represents a major
step toward understanding the behavior of these
systems of particles. Until now, research efforts had
focused on cooling bosons – fundamentally different
from fermions, and much easier to work with. But
now the Stanford team extended these techniques to
gases made of the most magnetic atom: a fermionic
isotope of dysprosium with magnetic energies 440
times larger than previously cooled gases.
He explained that when the thermal energy of
some substances drops below a certain critical point,
it used to be impossible to consider its component
particles separately since the material becomes
strongly correlated and its quantum effects become
difficult to understand and study. Nevertheless,
making the material out of a gas of atoms allows it
to become visible. These quantum gases, the coldest
objects known to man, are where researchers can
observe zero-viscosity fluids – superfluids – that are
mathematical cousins of superconductors.
Thus far, the result of the Lev lab’s high-tech efforts
is a tiny ball of ultracold quantum dipolar fluid. But the
researchers have reason to believe that the humble
substance will exhibit the seemingly contradictory
characteristics of both crystals and superfluids. This
combination could lead to quantum liquid crystals.
Or it could yield a supersolid – a hypothetical state
of matter that would, in theory at least, be a solid with
superfluid characteristics.
The researchers have already begun developing a
microscope to make use of the dipolar quantum fluid’s unique characteristics. It is the “cryogenic atom chip
microscope”, a magnetic probe that should measure
magnetic fields with unprecedented sensitivity and
resolution. “This kind of probe may even allow for a
more stable form of quantum computation that uses
exotic quantum matter to process information, known
as a topologically protected quantum computer”,
said Lev. “So this new approach is really incredibly
exciting.”
Available at: <http://news.stanford.edu/news/2012/june/lev-new- -matter-060512.html>. Retrieved on: 5 June 2012. Adapted.
Available at: <http://news.stanford.edu/news/2012/june/lev-new- -matter-060512.html>. Retrieved on: 5 June 2012. Adapted.
According to the text, fermions
Ano: 2012
Banca:
CESGRANRIO
Órgão:
TERMOBAHIA
Provas:
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Termelétrica Júnior - Elétrica
|
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Segurança Júnior |
Q2908079
Matemática Financeira
Um produto teve seu preço original aumentado em 10% e passou a custar P reais.
Se, em vez de ser aumentado em 10%, o preço original do produto sofresse um desconto de 20%, o produto passaria a custar, em reais,
Ano: 2012
Banca:
CESGRANRIO
Órgão:
TERMOBAHIA
Provas:
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Termelétrica Júnior - Elétrica
|
CESGRANRIO - 2012 - TERMOBAHIA - Engenheiro de Segurança Júnior |
Q2908077
Matemática
Em um grande campo, há nove torres e cada uma delas deve ser conectada às demais por meio de cabos.
Se a conexão entre duas torres quaisquer sempre fizer uso de exatamente 20 cabos, quantos cabos serão necessários para ligar todas as nove torres entre si?
Ano: 2012
Banca:
CESGRANRIO
Órgão:
Casa da Moeda
Prova:
CESGRANRIO - 2012 - CMB - Técnico Industrial - Projetos Elétricos |
Q2895436
Noções de Informática
Desenhando com o AutoCad 2012, na confecção de elementos como paredes e barramentos elétricos, por exemplo, pode-se otimizar o tempo, utilizando um comando que permite criar linhas paralelas compostas de maneira bem simples. Esse comando é
Ano: 2012
Banca:
CESGRANRIO
Órgão:
Casa da Moeda
Prova:
CESGRANRIO - 2012 - CMB - Técnico Industrial - Projetos Elétricos |
Q2895432
Engenharia Elétrica
O diagrama unifilar completo para o eletroduto II é
Ano: 2012
Banca:
CESGRANRIO
Órgão:
Casa da Moeda
Prova:
CESGRANRIO - 2012 - CMB - Técnico Industrial - Projetos Elétricos |
Q2895425
Engenharia Elétrica
No eletroduto II, os condutores são os apresentados em
Ano: 2012
Banca:
CESGRANRIO
Órgão:
Casa da Moeda
Prova:
CESGRANRIO - 2012 - CMB - Técnico Industrial - Projetos Elétricos |
Q2895424
Engenharia Elétrica
No eletroduto I, passam os condutores apresentados em
Ano: 2012
Banca:
CESGRANRIO
Órgão:
Casa da Moeda
Prova:
CESGRANRIO - 2012 - Casa da Moeda - Auxiliar de Operação Industrial - Elétrica |
Q2878176
Engenharia Elétrica
Nos estabelecimentos que possuem carga instalada superior a 75 kW, existe a obrigatoriedade mínima de documentação dos seguintes itens: procedimentos, instruções técnicas, segurança, inspeção, medições, EPI, comprovante de habilitação dos trabalhadores, resultados de testes de isolamento, certificações e relatórios técnicos.
O documento que contém esses itens é denominado
Ano: 2012
Banca:
CESGRANRIO
Órgão:
Casa da Moeda
Prova:
CESGRANRIO - 2012 - Casa da Moeda - Auxiliar de Operação Industrial - Elétrica |
Q2878175
Engenharia Elétrica
Um volante de inércia armazena 10 MJ na forma de energia cinética, sendo empregado em um sistema ininterrupto de energia em substituição a baterias.
Admitindo que se consiga a conversão de energia cinética em elétrica com 90% de rendimento, o tempo máximo durante o qual uma carga de 10 kW poderá ser suprida é de
Ano: 2012
Banca:
CESGRANRIO
Órgão:
Casa da Moeda
Prova:
CESGRANRIO - 2012 - Casa da Moeda - Auxiliar de Operação Industrial - Elétrica |
Q2878173
Engenharia Elétrica
Considere as afirmações abaixo com relação à Norma Regulamentadora de Segurança no Trabalho em Instalações e Serviços de Eletricidade – NR 10.
I - Dentro do seu objetivo e campo de aplicação, esta norma regulamentadora visa a garantir apenas a segurança e a saúde dos trabalhadores que, diretamente, interajam em instalações elétricas e em serviços com eletricidade.
II - As medidas de controle preconizadas por esta norma regulamentadora exigem que, em todas as intervenções em instalações elétricas, sejam adotadas medidas preventivas de controle do risco elétrico e de outros riscos adicionais, mediante técnicas de análise de risco.
III - A medida de proteção individual desta norma regulamentadora permite o uso de determinados adornos pessoais nos trabalhos com instalações elétricas ou em suas proximidades.
IV - Esta norma regulamentadora estabelece que o projeto elétrico deve defi nir a confi guração do esquema de aterramento e determina se é obrigatória ou não a interligação entre o condutor neutro e o de proteção e a conexão a terra das partes condutoras não destinadas à condução da eletricidade.
São corretas APENAS as afirmações:
Ano: 2012
Banca:
CESGRANRIO
Órgão:
Casa da Moeda
Prova:
CESGRANRIO - 2012 - Casa da Moeda - Auxiliar de Operação Industrial - Elétrica |
Q2878168
Engenharia Elétrica
Em uma inspeção de rotina, o operador de uma subestação verificou que o transformador tem uma regulação nominal de tensão, em módulo, igual a 11%. Ao utilizar um voltímetro no secundário a vazio, esse operador fez uma leitura de 660 V.
Considerando que uma carga nominal foi ligada ao secundário do transformador e que a carga é puramente capacitiva, que valor o voltímetro passou a indicar?
Ano: 2012
Banca:
CESGRANRIO
Órgão:
Casa da Moeda
Prova:
CESGRANRIO - 2012 - Casa da Moeda - Auxiliar de Operação Industrial - Elétrica |
Q2878166
Engenharia Elétrica
Uma prensa para secar filtros de óleo de transformadores necessita funcionar com um motor de indução trifásico de 440 V, 45 CV e 60 Hz com rotor em gaiola. Na partida, o motor fornece à carga um torque de 203 Nm e utiliza uma chave compensadora no tap de 65%. Com a compensadora, qual o torque aproximado, em newton-Metro, na partida?
Ano: 2012
Banca:
CESGRANRIO
Órgão:
Casa da Moeda
Prova:
CESGRANRIO - 2012 - Casa da Moeda - Auxiliar de Operação Industrial - Elétrica |
Q2878164
Eletricidade
Uma bomba d´água de um reservatório é acionada por um motor de indução trifásico de 10 CV e 60 Hz. Tal motor desenvolve um torque nominal de 115lb-pé, e sua reatância com rotor bloqueado é cinco vezes o valor da resistência desse rotor.
Baseando-se nos dados fornecidos, o valor do escorregamento percentual, quando o torque for máximo, é de
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