Questões de Concurso Público CETESB 2009 para Engenheiro Eletricista

Foram encontradas 50 questões

Q58245 Inglês
The term yields in - Agricultural yields will decline, with some countries in Africa losing up to half of their farm output by 2020. Food security will get worse, and malnutrition and hunger will grow. - refers to the gains through the
Alternativas
Q58246 Inglês
3 Homemade Natural Cleaning Products

One of my earliest memories is of my mother cleaning with
what looked to me like cooking ingredients. She would be listening
to the radio as she poured baking soda, lemon, and vinegar
combinations on the surfaces of our home. Magically these natural
cleaning products kept our home clean and smelling fresh, without
stretching an already thin household budget. Here are a few basic
household ingredients and items you can use to clean your home.

Vinegar naturally cleans like an all-purpose cleaner. Mix a
solution of 1 part water to 1 part vinegar in a new store bought
spray bottle and you have a solution that will clean most areas of
your home. Vinegar is a great natural cleaning product as well as
a disinfectant and deodorizer. Always test on an inconspicuous
area. It is safe to use on most surfaces and has the added bonus of
being incredibly cheap. Improperly diluted vinegar is acidic and
can eat away at tile grout. Never use vinegar on marble surfaces.
Don't worry about your home smelling like vinegar. The smell
disappears when it dries.

Lemon juice is another natural substance that can be used to
clean your home. Lemon juice can be used to dissolve soap scum
and hard water deposits. Lemon is a great substance to clean and
shine brass and copper. Lemon juice can be mixed with vinegar
and or baking soda to make cleaning pastes. Cut a lemon in half
and sprinkle baking soda on the cut section. Use the lemon to
scrub dishes, surfaces, and stains.

Baking soda can be used to scrub surfaces in much the same
way as commercial abrasive cleansers. Baking soda is great as a
deodorizer. Place a box in the refrigerator and freezer to absorb
odors. Put it anywhere you need deodorizing action. Try these three
kitchen ingredients as natural cleaning products in your home.

(http://housekeeping.about.com/cs/environment/a/alternateclean.30.10.2009.
Adaptado)

According to the text, the natural cleaning products are
Alternativas
Q58247 Inglês
3 Homemade Natural Cleaning Products

One of my earliest memories is of my mother cleaning with
what looked to me like cooking ingredients. She would be listening
to the radio as she poured baking soda, lemon, and vinegar
combinations on the surfaces of our home. Magically these natural
cleaning products kept our home clean and smelling fresh, without
stretching an already thin household budget. Here are a few basic
household ingredients and items you can use to clean your home.

Vinegar naturally cleans like an all-purpose cleaner. Mix a
solution of 1 part water to 1 part vinegar in a new store bought
spray bottle and you have a solution that will clean most areas of
your home. Vinegar is a great natural cleaning product as well as
a disinfectant and deodorizer. Always test on an inconspicuous
area. It is safe to use on most surfaces and has the added bonus of
being incredibly cheap. Improperly diluted vinegar is acidic and
can eat away at tile grout. Never use vinegar on marble surfaces.
Don't worry about your home smelling like vinegar. The smell
disappears when it dries.

Lemon juice is another natural substance that can be used to
clean your home. Lemon juice can be used to dissolve soap scum
and hard water deposits. Lemon is a great substance to clean and
shine brass and copper. Lemon juice can be mixed with vinegar
and or baking soda to make cleaning pastes. Cut a lemon in half
and sprinkle baking soda on the cut section. Use the lemon to
scrub dishes, surfaces, and stains.

Baking soda can be used to scrub surfaces in much the same
way as commercial abrasive cleansers. Baking soda is great as a
deodorizer. Place a box in the refrigerator and freezer to absorb
odors. Put it anywhere you need deodorizing action. Try these three
kitchen ingredients as natural cleaning products in your home.

(http://housekeeping.about.com/cs/environment/a/alternateclean.30.10.2009.
Adaptado)

According to the text, vinegar must be avoided
Alternativas
Q58248 Inglês
3 Homemade Natural Cleaning Products

One of my earliest memories is of my mother cleaning with
what looked to me like cooking ingredients. She would be listening
to the radio as she poured baking soda, lemon, and vinegar
combinations on the surfaces of our home. Magically these natural
cleaning products kept our home clean and smelling fresh, without
stretching an already thin household budget. Here are a few basic
household ingredients and items you can use to clean your home.

Vinegar naturally cleans like an all-purpose cleaner. Mix a
solution of 1 part water to 1 part vinegar in a new store bought
spray bottle and you have a solution that will clean most areas of
your home. Vinegar is a great natural cleaning product as well as
a disinfectant and deodorizer. Always test on an inconspicuous
area. It is safe to use on most surfaces and has the added bonus of
being incredibly cheap. Improperly diluted vinegar is acidic and
can eat away at tile grout. Never use vinegar on marble surfaces.
Don't worry about your home smelling like vinegar. The smell
disappears when it dries.

Lemon juice is another natural substance that can be used to
clean your home. Lemon juice can be used to dissolve soap scum
and hard water deposits. Lemon is a great substance to clean and
shine brass and copper. Lemon juice can be mixed with vinegar
and or baking soda to make cleaning pastes. Cut a lemon in half
and sprinkle baking soda on the cut section. Use the lemon to
scrub dishes, surfaces, and stains.

Baking soda can be used to scrub surfaces in much the same
way as commercial abrasive cleansers. Baking soda is great as a
deodorizer. Place a box in the refrigerator and freezer to absorb
odors. Put it anywhere you need deodorizing action. Try these three
kitchen ingredients as natural cleaning products in your home.

(http://housekeeping.about.com/cs/environment/a/alternateclean.30.10.2009.
Adaptado)

The term as in - She would be listening to the radio as she poured baking soda, lemon, and vinegar combinations on the surfaces of our home. - can be correctly replaced by
Alternativas
Q70245 Engenharia Eletrônica
Na tabela a seguir, são apresentados os números de referência nas respectivas bases numéricas. Identifique entre as alternativas aquela que mostra quais das linhas (F1, F2, F3 e F4) da tabela apresentam as conversões de números para diferentes bases numéricas totalmente verdadeiras (V) ou falsas (F).

Imagem 002.jpg

Alternativas
Q70246 Engenharia Eletrônica
Qual é a tabela-verdade correta para uma porta lógica tipo OU com entradas A e B e saída C?
Alternativas
Q70247 Engenharia Eletrônica
Considerando o circuito digital a seguir, com as formas de onda de entrada representadas, identifique a forma de onda da saída S.

Imagem 009.jpg


Alternativas
Q70248 Engenharia Eletrônica
Qual é a tensão de saída Imagem 015.jpg do circuito mostrado?

Imagem 016.jpg
Alternativas
Q70249 Engenharia Eletrônica
No circuito de amplificadores operacionais a seguir, qual é o valor da tensão de saída Imagem 019.jpg

Imagem 018.jpg
Alternativas
Q70250 Engenharia Eletrônica
Qual é a função de transferência de malha fechada do seguinte diagrama de blocos?

Imagem 020.jpg
Alternativas
Q70251 Engenharia Eletrônica
Imagem associada para resolução da questão

Qual é a saída, Y(s), do diagrama de blocos da questão acima de número 31 se a entrada R(s) é a função degrau unitário?
Alternativas
Q70252 Engenharia Eletrônica

Imagem associada para resolução da questão


Qual é o erro de estado permanente do diagrama de blocos das questões de números 31 e 32 se F(s) = 1 e a entrada R(s) é a função degrau unitário?

Alternativas
Q70253 Engenharia Eletrônica
No mapa de Karnaugh apresentado na tabela a seguir, é mostrada a síntese de um processo em que as letras A, B e C representam as entradas e Q é a saída.

Imagem 033.jpg
Ao se programar um CLP, a programação em linguagem Ladder mais adequada para representar este mapa é:

Alternativas
Q70254 Engenharia de Telecomunicações
Qual é o sinal modulado de uma onda AM se a onda portadora Imagem 039.jpg
Alternativas
Q70255 Engenharia Elétrica
A frequência da banda lateral superior do sinal modulado do questão de número 35 é
Alternativas
Q70256 Telecomunicações
Qual é a faixa de frequência de um sinal VHF?
Alternativas
Q70257 Engenharia Eletrônica
Quais são os componentes de um computador que usa arquitetura de von Neumann?
Alternativas
Q70258 Engenharia Eletrônica
Dado o sinal

Imagem 050.jpg

cuja forma de onda é

Imagem 051.jpg

determine qual das seguintes figuras reflete o espectro de frequência (amplitude e fase).

Alternativas
Q70259 Engenharia Eletrônica
O acumulador, na estrutura de um microprocessador, tem a função de
Alternativas
Respostas
21: B
22: A
23: E
24: C
25: D
26: A
27: E
28: A
29: A
30: A
31: D
32: C
33: D
34: E
35: D
36: C
37: B
38: A
39: A
40: C