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Uma equipe de topografia realizou o levantamento de uma área poligonal, conforme tabela abaixo.
Vértice |
Ângulo interno medido |
1 |
59°19'25" |
2 |
211°48'55" |
3 |
74°42'40" |
4 |
198°11'10" |
5 |
60°49'55" |
6 |
169°49'25" |
7 |
125°19'10" |
Com base nos ângulos internos obtidos no levantamento, o erro de fechamento angular (Efa) do polígono levantado é:
Um engenheiro está executando um trabalho de campo e precisa determinar a distância entre dois pontos de coordenadas locais conhecidas: ponto A (101;50) metros e ponto B (105;53) metros. A distância, em metros, obtida entre esses dois pontos é de:
A Reambulação é uma fase da elaboração cartográfica, na qual são levantadas, em campo, as denominações dos acidentes geográficos naturais e artificiais que complementarão as cartas a serem impressas. O material mais utilizado na execução dos trabalhos de Reambulação é:
A Aerofotogrametria é a cobertura aerofotogramétrica executada para fins de mapeamento. Uma empresa irá realizar um voo aerofotogramétrico e solicitou ao seu engenheiro que elaborasse o plano de voo referente ao mapeamento. A sobreposição frontal ou longitudinal da linha de voo deve ser de:
O Sistema de Posicionamento Global - GPS está sendo largamente utilizado por órgãos governamentais e por empresas dos mais diversos setores. Sobre essa questão, analise os itens a seguir, considerando V para a(s) afirmativa(s) verdadeira(s) e F para a(s) falsa(s):
( ) O Sistema de Posicionamento Global está disponível 24 horas e possui cobertura global.
( ) O GPS indica ao usuário sua localização em termos de latitude, longitude, mas não determina a altitude.
( ) Para a obtenção dos dados fornecidos pelo Sistema de Posicionamento Global é necessária, no mínimo, a leitura de 6 satélites.
A sequência correta é:
Em 2015, um agrimensor precisou executar a correção da Declinação Magnética de uma carta topográfica do ano 2000, para a realização de um determinado levantamento.
Sabendo-se que a Declinação Magnética (Dm), no ano de confecção da carta, era de 8°12’W, e que, na região da carta topográfica, a Dm é negativa, a Declinação Magnética atual, caso a variação anual seja de 4’, é:
Uma empresa determinou que sua equipe técnica realizasse uma vistoria em um de seus projetos. Um engenheiro da equipe verificou, em uma carta topográfica da região, que o local da vistoria estava situado a 30 Km da sede da empresa. Sabendo-se que essa distância estava representada por uma linha reta de 5 centímetros de comprimento, a escala dessa carta é:
Um engenheiro agrimensor foi a campo realizar a instalação de um repetidor de transmissão telefônica com sua equipe. Na ordem de serviço de instalação do equipamento, constava a seguinte informação: REPETIDOR TELEFÔNICO ALFA – Orientação da antena (Rumo magnético 20°30’ SW).
Para realizar a orientação correta da antena do equipamento, o engenheiro deverá utilizar o seguinte azimute:
Abel, Bruno, Caio, Diogo e Elias ocupam, respectivamente, os bancos 1, 2, 3, 4 e 5, em volta da mesa redonda representada abaixo.
São feitas então três trocas de lugares: Abel e Bruno trocam de lugar entre si, em seguida Caio e Elias trocam de lugar entre si e, finalmente, Diogo e Abel trocam de lugar entre si.
Considere as afirmativas ao final dessas trocas:
• Diogo é o vizinho à direita de Bruno.
• Abel e Bruno permaneceram vizinhos.
• Caio é o vizinho à esquerda de Abel.
• Elias e Abel não são vizinhos.
É/são verdadeira(s):
TEXT 3
Sustainable mining – oxymoron or a way of the future?
Mining is an activity that has persisted since the start of humans using tools. However, one might argue that digging a big hole in the ground and selling the finite resources that come out of that hole is not sustainable, especially when the digging involves the use of other finite resources (i.e. fuels) and produces a lot of greenhouse gases.
The counter argument could go along the lines that minerals are not being lost or destroyed through mining and mineral processing – the elements are being shifted around, and converted into new forms. Metals can even be extracted from waste, seawater or even sewage, and recycled. But a more simple argument is possible: a mine can be sustainable if it is economically, socially and environmentally beneficial in the short and long term. To be sustainable, the positive benefits of mining should outweigh any negative impacts. […]
Social positives are often associated with mines in regional areas, such as providing better amenities in a nearby town, or providing employment (an economic and social positive). Social negatives can also occur, such as dust, noise, traffic and visual amenity. These are commonly debated and, whilst sometimes controversial, can be managed with sufficient corporate commitment, stakeholder engagement, and enough time to work through the issues. Time is the key parameter - it may take several years for a respectful process of community input, but as long as it is possible for social negatives to be outweighed by social positives, then the project will be socially sustainable.
It is most likely that a mine development will have some environmental negatives, such as direct impacts on flora and fauna through clearing of vegetation and habitat within the mine footprint. Some mines will have impacts which extend beyond the mine site, such as disruption to groundwater, production of silt and disposal of waste. Certainly these impacts will need to be managed throughout the mine life, along with robust rehabilitation and closure planning. […]
The real turning point will come when mining companies go beyond environmental compliance to create ‘heritage projects’ that can enhance the environmental or social benefits in a substantial way – by more than the environmental offsets needed just to make up for the negatives created by the mine. In order to foster these innovative mining heritage projects we need to promote ‘sustainability assessments’ - not just ‘environmental assessments’. This will lead to a more mature appreciation of the whole system whereby the economic and social factors, as well as environmental factors, are considered in a holistic manner.
(adapted from https://www.engineersaustralia.org.au/western-australia-division/sustainable-mining-oxymoron-or-way-future. Retrieved on August 10, 2015)
The title suggests that the expression “sustainable mining” may:
TEXT 2
Innovation is the new key to survival
[…]
At its most basic, innovation presents an optimal strategy for controlling costs. Companies that have invested in such technologies as remote mining, autonomous equipment and driverless trucks and trains have reduced expenses by orders of magnitude, while simultaneously driving up productivity.
Yet, gazing towards the horizon, it is rapidly becoming clear that innovation can do much more than reduce capital intensity. Approached strategically, it also has the power to reduce people and energy intensity, while increasing mining intensity.
Capturing the learnings
The key is to think of innovation as much more than research and development (R&D) around particular processes or technologies. Companies can, in fact, innovate in multiple ways, such as leveraging supplier knowledge around specific operational challenges, redefining their participation in the energy value chain or finding new ways to engage and partner with major stakeholders and constituencies.
To reap these rewards, however, mining companies must overcome their traditionally conservative tendencies. In many cases, miners struggle to adopt technologies proven to work at other mining companies, let alone those from other industries. As a result, innovation becomes less of a technology problem and more of an adoption problem.
By breaking this mindset, mining companies can free themselves to adapt practical applications that already exist in other industries and apply them to fit their current needs. For instance, the tunnel boring machines used by civil engineers to excavate the Chunnel can vastly reduce miners’ reliance on explosives. Until recently, those machines were too large to apply in a mining setting. Some innovators, however, are now incorporating the underlying technology to build smaller machines—effectively adapting mature solutions from other industries to realize more rapid results.
Re-imagining the future
At the same time, innovation mandates companies to think in entirely new ways. Traditionally, for instance, miners have focused on extracting higher grades and achieving faster throughput by optimizing the pit, schedule, product mix and logistics. A truly innovative mindset, however, will see them adopt an entirely new design paradigm that leverages new information, mining and energy technologies to maximize value. […]
Approached in this way, innovation can drive more than cost reduction. It can help mining companies mitigate and manage risks, strengthen business models and foster more effective community and government relations. It can help mining services companies enhance their value to the industry by developing new products and services. Longer-term, it can even position organizations to move the needle on such endemic issues as corporate social responsibility, environmental performance and sustainability.
(http://www2.deloitte.com/content/dam/Deloitte/ru/Documents/energy-resources/ru_er_tracking_the_trends_2015_eng.pdf)
“For instance” in “Traditionally, for instance, miners have focused on extracting” (l. 34-35) is used to:
TEXT 2
Innovation is the new key to survival
[…]
At its most basic, innovation presents an optimal strategy for controlling costs. Companies that have invested in such technologies as remote mining, autonomous equipment and driverless trucks and trains have reduced expenses by orders of magnitude, while simultaneously driving up productivity.
Yet, gazing towards the horizon, it is rapidly becoming clear that innovation can do much more than reduce capital intensity. Approached strategically, it also has the power to reduce people and energy intensity, while increasing mining intensity.
Capturing the learnings
The key is to think of innovation as much more than research and development (R&D) around particular processes or technologies. Companies can, in fact, innovate in multiple ways, such as leveraging supplier knowledge around specific operational challenges, redefining their participation in the energy value chain or finding new ways to engage and partner with major stakeholders and constituencies.
To reap these rewards, however, mining companies must overcome their traditionally conservative tendencies. In many cases, miners struggle to adopt technologies proven to work at other mining companies, let alone those from other industries. As a result, innovation becomes less of a technology problem and more of an adoption problem.
By breaking this mindset, mining companies can free themselves to adapt practical applications that already exist in other industries and apply them to fit their current needs. For instance, the tunnel boring machines used by civil engineers to excavate the Chunnel can vastly reduce miners’ reliance on explosives. Until recently, those machines were too large to apply in a mining setting. Some innovators, however, are now incorporating the underlying technology to build smaller machines—effectively adapting mature solutions from other industries to realize more rapid results.
Re-imagining the future
At the same time, innovation mandates companies to think in entirely new ways. Traditionally, for instance, miners have focused on extracting higher grades and achieving faster throughput by optimizing the pit, schedule, product mix and logistics. A truly innovative mindset, however, will see them adopt an entirely new design paradigm that leverages new information, mining and energy technologies to maximize value. […]
Approached in this way, innovation can drive more than cost reduction. It can help mining companies mitigate and manage risks, strengthen business models and foster more effective community and government relations. It can help mining services companies enhance their value to the industry by developing new products and services. Longer-term, it can even position organizations to move the needle on such endemic issues as corporate social responsibility, environmental performance and sustainability.
(http://www2.deloitte.com/content/dam/Deloitte/ru/Documents/energy-resources/ru_er_tracking_the_trends_2015_eng.pdf)
The word “them” in “apply them to fit” (l. 25) refers to:
TEXT 2
Innovation is the new key to survival
[…]
At its most basic, innovation presents an optimal strategy for controlling costs. Companies that have invested in such technologies as remote mining, autonomous equipment and driverless trucks and trains have reduced expenses by orders of magnitude, while simultaneously driving up productivity.
Yet, gazing towards the horizon, it is rapidly becoming clear that innovation can do much more than reduce capital intensity. Approached strategically, it also has the power to reduce people and energy intensity, while increasing mining intensity.
Capturing the learnings
The key is to think of innovation as much more than research and development (R&D) around particular processes or technologies. Companies can, in fact, innovate in multiple ways, such as leveraging supplier knowledge around specific operational challenges, redefining their participation in the energy value chain or finding new ways to engage and partner with major stakeholders and constituencies.
To reap these rewards, however, mining companies must overcome their traditionally conservative tendencies. In many cases, miners struggle to adopt technologies proven to work at other mining companies, let alone those from other industries. As a result, innovation becomes less of a technology problem and more of an adoption problem.
By breaking this mindset, mining companies can free themselves to adapt practical applications that already exist in other industries and apply them to fit their current needs. For instance, the tunnel boring machines used by civil engineers to excavate the Chunnel can vastly reduce miners’ reliance on explosives. Until recently, those machines were too large to apply in a mining setting. Some innovators, however, are now incorporating the underlying technology to build smaller machines—effectively adapting mature solutions from other industries to realize more rapid results.
Re-imagining the future
At the same time, innovation mandates companies to think in entirely new ways. Traditionally, for instance, miners have focused on extracting higher grades and achieving faster throughput by optimizing the pit, schedule, product mix and logistics. A truly innovative mindset, however, will see them adopt an entirely new design paradigm that leverages new information, mining and energy technologies to maximize value. […]
Approached in this way, innovation can drive more than cost reduction. It can help mining companies mitigate and manage risks, strengthen business models and foster more effective community and government relations. It can help mining services companies enhance their value to the industry by developing new products and services. Longer-term, it can even position organizations to move the needle on such endemic issues as corporate social responsibility, environmental performance and sustainability.
(http://www2.deloitte.com/content/dam/Deloitte/ru/Documents/energy-resources/ru_er_tracking_the_trends_2015_eng.pdf)
The fragment “To reap these rewards” (l. 17) means to:
“A maior ameaça à democracia, à justiça socioeconômica e ao crescimento econômico neste país é que predomina a ideia de controle monopolista de algumas empresas sobre a economia”. (Nelson Mandela)
Assinale o comentário adequado aos componentes da citação de Nelson Mandela sobre democracia:
O segmento, retirado dos pensamentos anteriores, que mostra o vocábulo QUE com a classe de pronome relativo, ou seja, em substituição a um termo anterior, corretamente indicado, é:
Entre as citações abaixo, todas de escritores célebres, aquela que mostra uma contradição interna da democracia é:
Um centro de reservação é dotado de um reservatório apoiado e um reservatório elevado com volume igual a 500 m3, sendo que este último atende a zona alta com área igual a 120 ha. Assumindo uma densidade demográfica igual a 200 hab/ha para a zona alta, assinale a alternativa que apresenta a vazão de alimentação do reservatório elevado a partir do reservatório apoiado.
Um município deverá apresentar, no ano de 2040, uma população igual a 200 000 habitantes. Assumindo um índice de atendimento de água potável nessa data igual a 100%, qual deverá ser a vazão afluente à sua estação de tratamento de água?
Uma adutora de água bruta possui um diâmetro igual a 800 mm e comprimento igual a 2 500 metros e veicula uma vazão igual a 1 200 L/s. Assumindo que a perda de carga unitária na adutora de água bruta seja igual a 5,0 m/km e que seja composta pelas peças especiais discriminadas a seguir, assinale a alternativa que apresenta os seus valores de perda de carga localizada, distribuída e total, respectivamente.
Uma companhia de saneamento municipal deseja efetuar uma aferição do seu valor de coeficiente de retorno de esgoto e, para tanto, obteve os seguintes dados operacionais do seu sistema de abastecimento de água e esgotos sanitários:
Dados:
Vazão média afluente à estação de tratamento de água: 225 L/s
Índice de perdas: 20%
Vazão média de esgotos sanitários afluente à estação de tratamento de esgotos: 160 L/s
Vazão de infiltração: 20 L/s
O valor de coeficiente de retorno de esgoto é
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