If the needle on an industrial sewing machine becomes badly : GMAT Critical Reasoning (CR)
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# If the needle on an industrial sewing machine becomes badly

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If the needle on an industrial sewing machine becomes badly [#permalink]

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09 Jul 2006, 13:46
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If the needle on an industrial sewing machine becomes badly worn, the article being sewn can be ruined. In traditional apparel factories, the people who operate the sewing machines monitor the needles and replace those that begin to wear out. Industrial sewing operations are becoming increasingly automated, however, and it would be inefficient for a factory to hire people for the sole purpose of monitoring needles. Therefore a sophisticated new acoustic device that detects wear in sewing machine needles is expected to become standard equipment in the automated apparel factories of the future.
Which one of the following is most strongly supported by the information above?
(A) In automated apparel factories, items will be ruined by faulty needles less frequently than happens in traditional apparel factories.
(B) In the automated apparel factories of the future, each employee will perform only one type of task.
(C) Traditional apparel factories do not use any automated equipment.
(D) The needles of industrial sewing machines wear out at unpredictable rates.
(E) As sewing machine needles become worn, the noise they make becomes increasingly loud.
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09 Jul 2006, 14:10
I think its clear A.
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09 Jul 2006, 20:09
I was confussed between D & E
since we don't know how eactly will the accoustic device will detect the wear so I am going with D
I think its clearly not predictable when the needles will wear. Thats why they have to detected as soon as they wear down........hence (D)
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09 Jul 2006, 20:25
E for me.

Assumption is that acoustic device will be able to detect the wear. E explains the relationship between wear and noise, thus strengthening the assumption.
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09 Jul 2006, 20:39
ps_dahiya wrote:
I think its clear A.

What the hell I was thinking.

On second thought I think this should be D.
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09 Jul 2006, 20:39
I think its D.

A - This is making an assumption that acoustic machines are better in detecting needle worn outs than humans...... Sorry an assumption cannot be the answer. - OUT

B - No specific information on what roles do huumans play in automated factories - OUT

C - Again no such information is presented. OUT

D - The only choice that makes sense. In both the cases of traditional and automated it is shown that the neddles are monitored for wear and tear. THere is no set day or date or time when needles are changed. For example a worker in a traditional factory can be asked to changed the needle after 20 garmets but the he monitors for wear and tear. Similarily in the automated factories, the needles can changed on a specific time date but a machine is installed to monitor the wear. Hence the conclusion is that the needles wear out at different rates. CORRECT

E - Again no such information given. OUT
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09 Jul 2006, 20:53
A. the author doesnt say anything about the comparision of the frequency of the apparel being ruined in the traditional and the automated ones.

B. " it would be inefficient for a factory to hire people for the sole purpose of monitoring needles." this is the closest it gets to citing that each employee gets to do only one work

C.The author doesnt if traditional factories use any automated equipment or not.

D. Did not mention anywhere about the predictablity of the needles bein worn out

E. He says acoustic, but does not say that the sound is gonna increase.
The noise may just change, without increasin or may decrease, once the needle is worn out.

Therefore B should b the right answer
Hope I am right, any loopholes in my argument..??
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10 Jul 2006, 02:49
I too think that it is B
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10 Jul 2006, 07:30
its between D and E. I pick D as E says the noise becomes increasingly loud - this type of detail is not mentioned and out of scope even though acoustic is mentioned. And the wearing rate is unpredictable because there is no fixed duration and humans need to monitor the needles.
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10 Jul 2006, 13:32
jaynayak wrote:
I think its D.

A - This is making an assumption that acoustic machines are better in detecting needle worn outs than humans...... Sorry an assumption cannot be the answer. - OUT

B - No specific information on what roles do huumans play in automated factories - OUT

C - Again no such information is presented. OUT

D - The only choice that makes sense. In both the cases of traditional and automated it is shown that the neddles are monitored for wear and tear. THere is no set day or date or time when needles are changed. For example a worker in a traditional factory can be asked to changed the needle after 20 garmets but the he monitors for wear and tear. Similarily in the automated factories, the needles can changed on a specific time date but a machine is installed to monitor the wear. Hence the conclusion is that the needles wear out at different rates. CORRECT

E - Again no such information given. OUT

Yup. I'm with D. Good explanation.
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10 Jul 2006, 13:56
Going with A....

(A) In automated apparel factories, items will be ruined by faulty needles less frequently than happens in traditional apparel factories.

After reading all the answers, I don't understand why A is assuming that the acoustic device is better... all that the CR stem says is that instead of using an employee to just detect wear and replace it if needed, the automated device will just detect it and may or may not replace it.

Isn't D also an assumption? Assuming that the needles wear out unpredictably... how do we know that. It could be uniformly wearing or non-uniformly based on the type of cloth used... I feel this cannot be derived from the stem...

Any clarification will be helpful...

Thanks/
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10 Jul 2006, 16:13
Conclusion:
Therefore a sophisticated new acoustic device that detects wear in sewing machine needles is expected to become standard equipment in the automated apparel factories of the future.

Premise:
If the needle on an industrial sewing machine becomes badly worn, the article being sewn can be ruined. In traditional apparel factories, the people who operate the sewing machines monitor the needles and replace those that begin to wear out. Industrial sewing operations are becoming increasingly automated, however, and it would be inefficient for a factory to hire people for the sole purpose of monitoring needles.

A but we already know this from the premise

B focus is the 'wear of the needle' not the task of an individual. By mentioning that an employee is going to do one task does not help up fix the needle issue.

D ok... they wear at an upredicable rate, but how does this relate back to the noise issue (acoustic device)? by wearing at an upredictable rate, how does the automated machine detect the wear?

E this strengthens the information because it tells us the purpose of the 'sophisticated new acoustic ' device. It is able to detect the wear since the machine creates a loud noise.

E
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10 Jul 2006, 16:22
acfuture wrote:
Conclusion:
Therefore a sophisticated new acoustic device that detects wear in sewing machine needles is expected to become standard equipment in the automated apparel factories of the future.

Premise:
If the needle on an industrial sewing machine becomes badly worn, the article being sewn can be ruined. In traditional apparel factories, the people who operate the sewing machines monitor the needles and replace those that begin to wear out. Industrial sewing operations are becoming increasingly automated, however, and it would be inefficient for a factory to hire people for the sole purpose of monitoring needles.

A but we already know this from the premise

B focus is the 'wear of the needle' not the task of an individual. By mentioning that an employee is going to do one task does not help up fix the needle issue.

D ok... they wear at an upredicable rate, but how does this relate back to the noise issue (acoustic device)? by wearing at an upredictable rate, how does the automated machine detect the wear?

E this strengthens the information because it tells us the purpose of the 'sophisticated new acoustic ' device. It is able to detect the wear since the machine creates a loud noise.

E

The passage never tells us how the new acoustic device detects the wear. If anything it could be the opposite. New sharp needles could make a really loud noise and become softer as the needle becomes duller.

Or the frequency of the needle could change as the needle becomes worn out. E is inferring to much.
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Re: CR- Sewing m/cs. [#permalink]

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10 Jul 2006, 16:27
old_dream_1976 wrote:
If the needle on an industrial sewing machine becomes badly worn, the article being sewn can be ruined. In traditional apparel factories, the people who operate the sewing machines monitor the needles and replace those that begin to wear out. Industrial sewing operations are becoming increasingly automated, however, and it would be inefficient for a factory to hire people for the sole purpose of monitoring needles. Therefore a sophisticated new acoustic device that detects wear in sewing machine needles is expected to become standard equipment in the automated apparel factories of the future.
Which one of the following is most strongly supported by the information above?
(A) In automated apparel factories, items will be ruined by faulty needles less frequently than happens in traditional apparel factories.
(B) In the automated apparel factories of the future, each employee will perform only one type of task.
(C) Traditional apparel factories do not use any automated equipment.
(D) The needles of industrial sewing machines wear out at unpredictable rates.
(E) As sewing machine needles become worn, the noise they make becomes increasingly loud.

(B)

The conclusion is that in there is a new device that will look out for bad needles because it is inefficient to hire people to do "just" that.
C,D,E are meaningless and there is no evidence to suggest A, therefore B.
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10 Jul 2006, 18:13
OA is D

But I find it difficult to decide between D and E . Wasted a lot of time and picked E. Argghhhhhh!

the explaination is already given in earlier responses - thank you all
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10 Jul 2006, 18:39
biggamejames wrote:
acfuture wrote:
Conclusion:
Therefore a sophisticated new acoustic device that detects wear in sewing machine needles is expected to become standard equipment in the automated apparel factories of the future.

Premise:
If the needle on an industrial sewing machine becomes badly worn, the article being sewn can be ruined. In traditional apparel factories, the people who operate the sewing machines monitor the needles and replace those that begin to wear out. Industrial sewing operations are becoming increasingly automated, however, and it would be inefficient for a factory to hire people for the sole purpose of monitoring needles.

A but we already know this from the premise

B focus is the 'wear of the needle' not the task of an individual. By mentioning that an employee is going to do one task does not help up fix the needle issue.

D ok... they wear at an upredicable rate, but how does this relate back to the noise issue (acoustic device)? by wearing at an upredictable rate, how does the automated machine detect the wear?

E this strengthens the information because it tells us the purpose of the 'sophisticated new acoustic ' device. It is able to detect the wear since the machine creates a loud noise.

E

The passage never tells us how the new acoustic device detects the wear. If anything it could be the opposite. New sharp needles could make a really loud noise and become softer as the needle becomes duller.

Or the frequency of the needle could change as the needle becomes worn out. E is inferring to much.

you do have a great point... thanks
ahhhh.......the gaps in my logic... this sure was a good discussion though.
10 Jul 2006, 18:39
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