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Q645811 Engenharia de Telecomunicações
Em um determinado sistema de comunicações foi calculado que a TOE (Taxa de Onda Estacionária) do guia de ondas que interliga o transmissor à antena é igual a 3. Considerando que a potência de transmissão é de 500 mW, calcule a perda devido a reflexão e, a seguir, assinale a opção correta.
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Q645809 Engenharia de Telecomunicações
Para uma antena cuja área efetiva (abertura) vale Aem = 20m2, quanto vale a sua diretividade máxima para a frequência de operação de 300 MHz?
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Q645708 Inglês
Mark the only correct statement according to the text above.
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Q645707 Inglês
Mark the only correct statement according to the text above.
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Q645706 Inglês
Mark the only correct statement according to the text above.
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Q645705 Inglês

The Pilot's Advice

- Daytime. South America. Overcast. Good Visibility.

      On approaching the buoyed deep water channel which led to the breakwater at the entrance to the port, I was in radio contact with the pilot launch, who reported that he was taking a pilot to a vessel anchored further out before bringing us our pilot. On receipt of this information I slowed to a speed to give bare steerage way. Eventually, however, we arrived at the buoyed channel before the pilot launch had returned to us, therefore, I altered course to proceed up the buoyed channel with still minimum power to counteract the cross-tide effect. Once the pilot boarded he ordered "Full Ahead" and moved into the centre of the channel. By this time the other vessel entering the port was close astern of us and rapidly overtaking our vessel. There then developed an intense discussion in the local language between my pilot and the pilot of the overtaking vessel as to who should pass through the breakwater first. Following this discussion my pilot advised me that as we were proceeding further up the harbor we should enter first and so we should maintain full speed. By this time the other vessel's bow was level with our stern and still overhauling us rapidly.

      The situation was allowed by both pilots to develop until the bows were level. I was conning my vessel from the bridge front auxiliary tiller and could feel the intense interaction between the two vessels, I insisted to my pilot that we should reduce speed and allow the other vessel to proceed ahead of us. At this time the pilot of the other vessel stated clearly that my vessel should enter the breakwater first and that he had put his vessel on slow speed, we were then no more than 3 cables from the breakwater. The other vessel dropped rapidly astern and a dangerous situation was averted.

      I think this was a case of the "Senior" pilot on the other vessel bullying the pilot on our vessel and so causing a hazardous and highly unnecessary situation.

                                                  (from the site: www.nautinst.org - MARS Report 93009)

Mark the correct alternative which completes the sentence.

When the tide in an area is moving up, it's said to be _________________.

Alternativas
Q645704 Inglês

The Pilot's Advice

- Daytime. South America. Overcast. Good Visibility.

      On approaching the buoyed deep water channel which led to the breakwater at the entrance to the port, I was in radio contact with the pilot launch, who reported that he was taking a pilot to a vessel anchored further out before bringing us our pilot. On receipt of this information I slowed to a speed to give bare steerage way. Eventually, however, we arrived at the buoyed channel before the pilot launch had returned to us, therefore, I altered course to proceed up the buoyed channel with still minimum power to counteract the cross-tide effect. Once the pilot boarded he ordered "Full Ahead" and moved into the centre of the channel. By this time the other vessel entering the port was close astern of us and rapidly overtaking our vessel. There then developed an intense discussion in the local language between my pilot and the pilot of the overtaking vessel as to who should pass through the breakwater first. Following this discussion my pilot advised me that as we were proceeding further up the harbor we should enter first and so we should maintain full speed. By this time the other vessel's bow was level with our stern and still overhauling us rapidly.

      The situation was allowed by both pilots to develop until the bows were level. I was conning my vessel from the bridge front auxiliary tiller and could feel the intense interaction between the two vessels, I insisted to my pilot that we should reduce speed and allow the other vessel to proceed ahead of us. At this time the pilot of the other vessel stated clearly that my vessel should enter the breakwater first and that he had put his vessel on slow speed, we were then no more than 3 cables from the breakwater. The other vessel dropped rapidly astern and a dangerous situation was averted.

      I think this was a case of the "Senior" pilot on the other vessel bullying the pilot on our vessel and so causing a hazardous and highly unnecessary situation.

                                                  (from the site: www.nautinst.org - MARS Report 93009)

Mark the correct statement according to the following situation.

Ships passing by Rosario Strait, U.S.A., have noticed a new sand bank 6 miles from the entrance to the strait and have informed the port authorities about it. The authorities decide to broadcast this to other vessels in the area as there is a lot of traffic. They say:

Alternativas
Q645703 Inglês

The Pilot's Advice

- Daytime. South America. Overcast. Good Visibility.

      On approaching the buoyed deep water channel which led to the breakwater at the entrance to the port, I was in radio contact with the pilot launch, who reported that he was taking a pilot to a vessel anchored further out before bringing us our pilot. On receipt of this information I slowed to a speed to give bare steerage way. Eventually, however, we arrived at the buoyed channel before the pilot launch had returned to us, therefore, I altered course to proceed up the buoyed channel with still minimum power to counteract the cross-tide effect. Once the pilot boarded he ordered "Full Ahead" and moved into the centre of the channel. By this time the other vessel entering the port was close astern of us and rapidly overtaking our vessel. There then developed an intense discussion in the local language between my pilot and the pilot of the overtaking vessel as to who should pass through the breakwater first. Following this discussion my pilot advised me that as we were proceeding further up the harbor we should enter first and so we should maintain full speed. By this time the other vessel's bow was level with our stern and still overhauling us rapidly.

      The situation was allowed by both pilots to develop until the bows were level. I was conning my vessel from the bridge front auxiliary tiller and could feel the intense interaction between the two vessels, I insisted to my pilot that we should reduce speed and allow the other vessel to proceed ahead of us. At this time the pilot of the other vessel stated clearly that my vessel should enter the breakwater first and that he had put his vessel on slow speed, we were then no more than 3 cables from the breakwater. The other vessel dropped rapidly astern and a dangerous situation was averted.

      I think this was a case of the "Senior" pilot on the other vessel bullying the pilot on our vessel and so causing a hazardous and highly unnecessary situation.

                                                  (from the site: www.nautinst.org - MARS Report 93009)

The correct alternative to complete the sentence below is:

When the men aboard the tug receive the towing line from the ship, they _____________

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Q645695 Engenharia Naval
Quando há necessidade de reduzir o valor da GM do navio, o Comandante deve determinar que sejam
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Q645690 Direito Marítimo
Qual a NORMAM que trata do serviço de praticagem, no Brasil?
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Q645688 Meteorologia

Na interpretação de informações de uma carta sinótica de pressão ao nível do mar do oceano Atlântico Sul, o navegante pode identificar os elementos de um sistema frontal. Considerando uma carta sinótica, correlacione os parâmetros meteorológicos às suas respectivas características.

PARÂMETROS METEOROLÓGICOS

I - Frente fria

II - Cavado

III- Ventos frios

IV - Frente quente

V - Ventos quentes


CARACTERÍSTICAS

( ) Ventos de NE.

( ) Linha e triângulos azuis.

( ) Ventos de SW.

( ) Faixa larga de nuvens.

( ) Linha e semicírculos vermelhos.

( ) Ventos no sentido horário.

( ) Ventos de NW.

( ) Nuvens de coloração muito branca.

Assinale a opção que apresenta a sequência correta.

Alternativas
Q645677 Direito Marítimo
De acordo com sua ordem hierárquica, os instrumentos normativos da Organização Marítima Internacional são classificados em três níveis. No primeiro nível classificam-se
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Q645673 Direito Marítimo
Em qual dos Anexos abaixo consta a regra que trata do plano SOPEP?
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Q645667 Engenharia Naval
Em relação à manobra de "RUDDER CYCLING", é correto afirmar que:
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Q645658 Mecânica
De uma forma geral, o elemento final de controle de um sistema é uma válvula de controle, definida como sendo um dispositivo capaz de regular a vazão de um fluido (líquido, gás ou vapor). Uma válvula de controle, segundo Bega (2006), divide-se basicamente nas seguintes partes:
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Q645657 Direito Marítimo
Com relação aos certificados emitidos por um governo signatário da Convenção Internacional para Prevenção da Poluição por Navios (SOLAS), é correto afirmar que outro governo signatário desta convenção
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Q645656 Química
De acordo com as teorias relativas à vaporização aplicada à refrigeração, é correto afirmar que
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Q645655 Direito Marítimo
According to the International Convention For the Prevention of Pollution From Ships (MARPOL) "SEWAGE" means drainage from
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Q645654 Mecânica
As falhas em um rolamento começam com a sujeição do mesmo à carga, ou às condições de trabalho para as quais ele não foi projetado. A análise da falha de um rolamento começa pela obtenção dos seguintes dados:
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Q645653 Mecânica de Autos

Sabe-se que PMS significa ponto morto superior e PMI significa ponto morto inferior.

Define-se cilindrada como sendo

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Respostas
1461: B
1462: D
1463: D
1464: C
1465: B
1466: E
1467: B
1468: A
1469: A
1470: C
1471: E
1472: B
1473: D
1474: A
1475: B
1476: B
1477: C
1478: E
1479: A
1480: A