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test job interview

  • Thread starter Thread starter exxon
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exxon

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yesterday I had six interviews for the selection of a junior mechanical designer to be included in a company in Verona. the candidates were:

1. mechanical expert with 5 years of experience as a designer/projectist;
2. three-year engineer mechatronic graduate;
3. three-year mechanical engineer with 1 year quality office experience;
4. three-year mechanical engineer graduate;
5. mechanical master engineer graduate;
6. Mechanical master engineer with experience only in non-binding sectors.

I asked everyone the same question about a simple exercise that I bring back below, obtaining a result that left me base. I would like others in the community to try to answer to see if the result obtained yesterday is a fortuitous case or not.

test:
a f, inextensible and negligible mass wire, is stretched vertically between the fixed point or the p, indeformable, and also of negligible mass. the piattello supports the fixed support s, held in position from the initial voltage of the wire pairs to 2 n. if the wire can with maximum a voltage of 100 n, will hold an additional weight of 10 kg applied to the plate?
Click to expand...
Test.webpNote 1: exercise is exactly as trivial as it appears. There are no tricks or hidden details that need strange inventions. the simple calculation necessary can be carried out in mind, without the use of any instrument.

Note 2: who wants to post the answer, answer only yes or no, without (at the moment) justify it, so as to leave to others the possibility to try without conditioning.
 
from current evening mechatronics student which I am answering: No.
in case of figure of shit at least I am (almost) justified, but hell I think it is actually quite simple
 
I'm a little confused with that "fixed support."
Does that mean he's bound to something? in that case the weight leaning on it would be influential?
 
who answered no, don't brash: she's in thick company... this can be a good opportunity to learn something that even if simple, is not so obvious. the right answer is obviously "yes".

of the six candidates, one did not answer, suggesting that the problem had no solution (????), the other five responded all "no".

yesterday, a couple of candidates had a general preparation more than discreet and I would expect the correct answer, instead no. I am a little relieved to see that here, many answered "yes". Of course every answer is influenced by the previous ones, but I opened the thread with the fear of not finding any gave the right answer.

for those who answered "no" and had doubts, observe the image below.
Test2.webpthe tension in the wire is given by the spring elongated by its rest position that just generate the 2 n.

Now, you think you're attacking the piattello a mass of 0.1 kg.

- Did something move?
- The spring exercises the same strength?
- Has the tension in the wire changed?

comparing these findings with the assumptions used for responding "no", it will probably understand the error.
 
exxon said:
who answered no, don't brash: she's in thick company... this can be a good opportunity to learn something that even if simple, is not so obvious. the right answer is obviously "yes".

of the six candidates, one did not answer, suggesting that the problem had no solution (????), the other five responded all "no".

yesterday, a couple of candidates had a general preparation more than discreet and I would expect the correct answer, instead no. I am a little relieved to see that here, many answered "yes". Of course every answer is influenced by the previous ones, but I opened the thread with the fear of not finding any gave the right answer.

for those who answered "no" and had doubts, observe the image below.
View attachment 53186the tension in the wire is given by the spring elongated by its rest position that just generate the 2 n.

Now, you think you're attacking the piattello a mass of 0.1 kg.

- Did something move?
- The spring exercises the same strength?
- Has the tension in the wire changed?

comparing these findings with the assumptions used for responding "no", it will probably understand the error.
Click to expand...
but does the tension not measure in mpa? You put newton there...? ! !
 
Now put me on.
I bet the only one who has not responded is the peritum, the 5 are no ing (new or new), the future is marked.
already, the good ones are abroad.
 
New Rider said:
but does the tension not measure in mpa? You put newton there...? ! !
Click to expand...
the term "tension" has two meanings, which to choose is deducted from the scope (or precisely from the unit of measurement used). when discussing deformation or cutting efforts, normal voltage (σ) and tangential (τ) have size [M][L]ˉ¹[T] mentre2, while when discussing forces applied to flexible components such as ropes and chains, tension (t or τ) has size [M][L]¹[T]2.
 
exxon said:
who answered no, don't brash: she's in thick company... this can be a good opportunity to learn something that even if simple, is not so obvious. the right answer is obviously "yes".

of the six candidates, one did not answer, suggesting that the problem had no solution (????), the other five responded all "no".

yesterday, a couple of candidates had a general preparation more than discreet and I would expect the correct answer, instead no. I am a little relieved to see that here, many answered "yes". Of course every answer is influenced by the previous ones, but I opened the thread with the fear of not finding any gave the right answer.

for those who answered "no" and had doubts, observe the image below.
View attachment 53186the tension in the wire is given by the spring elongated by its rest position that just generate the 2 n.

Now, you think you're attacking the piattello a mass of 0.1 kg.

- Did something move?
- The spring exercises the same strength?
- Has the tension in the wire changed?

comparing these findings with the assumptions used for responding "no", it will probably understand the error.
Click to expand...
I confess that I do not understand the question, certainly because of my little knowledge.
or better, I understood the inclusive speech of the spring, spring that however was not present in the initial design.
Does anyone want to explain the logic to me?
 

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