Prática de Shadowing: Well Pump Current #electrical #motorcontrol - Aprenda a falar inglês com vídeo

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1
Came out to do some work on this little well pump.
2
Here's a big, chonky, soft start that starts it.
3
Got some current monitoring, some overload action, and here's the well head.
4
This ain't your grandma's well pump.
5
This thing's no joke.
6
I'm not sure how deep it is, but it is a 250 horsepower, according to the nameplate.
7
I'm not about to pull it up and verify.
8
But anyway, I came here to take some current readings, or at least I was attempting to, until I got distracted with how the magnetic field was affecting my amp clamp.
9
I need to focus.
10
This is ridiculous.
11
The regular amp clamp won't fit around those parallel sets of 500s, so I'm going to have to break out the old flaccid clamp 5000 to get around all of them at once.
12
What?
13
But it did start making me think.
14
When I have parallels, should I measure all of them at once, or should I measure them individually and add them?
15
I guess it depends on what cranky old electrician taught you, but I decided to try both.
16
So here I am measuring them all at once and I got a value of 295 amps.
17
So now we're going to go ahead back to the regular clamp and do them one at a time.
18
We got 97 for one of our parallels, 101 .5 for another one,
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and way in the back we can stuff the old meter in there.
20
Got the clamp closed.
21
We got 99 .4.
22
Now just do some quick maths and we know that we have 297 .9 as a total.
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So we're a little above that 295.
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Now motor loads do vary a little bit and my meters haven't been calibrated since I bought them, but it's pretty close.
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So if you just want a total, go ahead and wrap it around all three parallels.
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But if you want something more accurate, I would also measure them one at a time.
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And remember, this is all within the same phase.
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So if you see a big imbalance between parallels, you might have a wire going bad.
29
Or it's just a really janky installation.
30
That's why they tell you to take the same path and make them the same length.
31
But it's all information you're missing out on if you just measure the total.
32
So this is what I'm going to try to do from now on.
33
See you next time.
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Vocabulário e dicas de fala para esta lição

Esta aula de conversação de nível B2 usa o vídeo “Well Pump Current”. As palavras que mais se repetem: clamp, parallel, measure, amp, total. Este vídeo tem 33 frases e 401 palavras para praticar shadowing. A fala dura 2:00. O falante fala rápido, cerca de 201 palavras por minuto, então espere sons ligados e reduzidos. Apenas 81% das palavras estão entre as 3.000 mais comuns do inglês, por isso o vocabulário é exigente.

Vocabulário principal deste vídeo

As 15 palavras mais avançadas do vídeo, com pronúncia e significado:

PalavraPronúnciaSignificado
clamp substantivo/ˈklæmp/grampo, braçadeira
calibrate verbo/ˈkæl.ɪ.bɹeɪ̯t/calibrar
cranky adjetivo/kɹæki/disfuncional
electrician substantivo/ɪˌlɛkˈtɹɪʃən/eletricista
flaccid adjetivo/ˈflæ(k)sɪd/flácido, fofo
horsepower substantivo/ˈhɔɹsˌpaʊɚ/cavalo de vapor, cavalo-vapor
imbalance substantivodesequilíbrio
overload verbo/ˌəʊvəˈləʊd/sobrecarregar
distract verbo/dɪˈstɹækt/distrair
metre substantivo/ˈmiːtəɹ/metro
verify verbo/ˈvɛɹɪfaɪ/verificar
individually advérbio/ˌɪndɪˈvɪd͡ʒ(u)əli/individualmente
meter substantivo/ˈmitəɹ/contador
mathematics substantivo/mæθ(.ə)ˈmæt.ɪks/matemática
installation substantivo/ˌɪn.stəˈleɪ.ʃən/instalação

Phrasal verbs que você vai ouvir

PalavraPronúnciaSignificado
go ahead verbo/ˌɡoʊ əˈhɛd/vai em frente

Pronúncia para ficar de olho

O falante usa 10 contrações e formas reduzidas, como I'm, we're, ain't. Diga-as na forma curta, do jeito que você ouve.

  • Os sons de “sh” e “zh”: electrician /ɪˌlɛkˈtɹɪʃən/, installation /ˌɪn.stəˈleɪ.ʃən/
  • Palavras longas — acerte a sílaba tônica: electrician /ɪˌlɛkˈtɹɪʃən/, individually /ˌɪndɪˈvɪd͡ʒ(u)əli/, mathematics /mæθ(.ə)ˈmæt.ɪks/, installation /ˌɪn.stəˈleɪ.ʃən/

Sons difíceis para falantes de português:

  • Consoante final — sem acrescentar um “i” depois: clamp /ˈklæmp/, calibrate /ˈkæl.ɪ.bɹeɪ̯t/, flaccid /ˈflæ(k)sɪd/, overload /ˌəʊvəˈləʊd/, distract /dɪˈstɹækt/

Como praticar com este vídeo

  1. Ouça o vídeo inteiro uma vez sem falar e anote as palavras que você não conhece.
  2. Comece na velocidade 0,75×, faça shadowing frase por frase e volte à velocidade normal quando ficar fácil.
  3. Grave a sua voz e compare com o original, prestando atenção a palavras como clamp, calibrate, cranky.

O que é a Técnica de Shadowing?

Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.

Técnica de shadowing: leia o guia completo passo a passo →