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# An experimental microwave clothes dryer heats neither air

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Director
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An experimental microwave clothes dryer heats neither air [#permalink]

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28 May 2005, 13:50
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An experimental microwave clothes dryer heats neither air nor cloth. Rather, it heats water on clothes, thereby saving electricity and protecting delicate fibers by operating at a lower temperature. Microwaves are waves that usually heat metal objects, but developers of a microwave dryer are perfecting a process that will prevent thin metal objects such as hairpins from heating up and burning clothes.
Which of the following, if true, most strongly indicates that the process, when perfected, will be insufficient to make the dryer readily marketable?
(A) Metal snap fasteners on clothes that are commonly put into drying machines are about the same thickness as most hairpins.
(B) Many clothes that are currently placed into mechanical dryers are not placed there along with hairpins or other thin metal objects.
(C) The experimental microwave dryer uses more electricity than future, improved models would be expected to use.
(D) Drying clothes with the process would not cause more shrinkage than the currently used mechanical drying process causes.
(E) Many clothes that are frequently machine-dried by prospective customers incorporate thick metal parts such as decorative brass studs or buttons.
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Director
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28 May 2005, 15:16
C.

If the experimental version uses more electricity than expected in the future, this means that perfecting a process that will prevent thin metal objects such as hairpins from heating up and burning clothes is not the only issue that has to be resolved before the microwave dryer becomes marketable.
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28 May 2005, 15:23
Agree with C....When the process is focusssing on reducing the heating of metal here comes a new parameter which might again send back the Microwaveable Drying to the lab....
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28 May 2005, 17:39
go with E.
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28 May 2005, 17:54
One more for C
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28 May 2005, 18:20
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E ....noone knows how the machine will behave with thick metals, we only know abt thin metals
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28 May 2005, 20:55
C it is.
If it can't heat up the thin metal it will definitely not be able to heat up thick metals,that rules out E.
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28 May 2005, 21:06
go with E.

OA plz
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28 May 2005, 21:06
banerjeea_98 wrote:
E ....noone knows how the machine will behave with thick metals, we only know abt thin metals

Banerjeea is right. Half the passage is devoted to addressing this problem of metal in a microwave [hinting that that is a significant potential issue], yet assurance is only given with regard to hairpin-thin metal items; the passage doesn't address the very real problem of thick metal objects on clothes.

And if you think microwaves that barely affect a hairpin won't affect a larger piece of metal, I invite you to place a paper clip, and then a large piece of metal, in a microwave oven, and see which one blows up the machine
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29 May 2005, 12:52
A. These snaps will be taken care of after process are perfected. Dryer is marketable
B. Supports that fact that dryers are less likely to have thin metals in it - Dryer is marketable
C. Electricty might be saved in future models, but the current model might still be using less than the other models. Dryer is marketable
D. Not cause more shrinkage - means dryer is marketable
E. Passage gives no idea of the effect on thick metals. Assuming things on our own is out of scope. Best answer.
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30 May 2005, 06:18
I go for E. If the current technology is just begining to resolve the problem with thin metal, how could it realistically deal with thick metals ??
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30 May 2005, 06:21
thin objects are heated fast than thick ones....So would still E be the answer?
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30 May 2005, 06:40
(A) Metal snap fasteners on clothes that are commonly put into drying machines are about the same thickness as most hairpins.
strengthens..
(B) Many clothes that are currently placed into mechanical dryers are not placed there along with hairpins or other thin metal objects.
still does not rule out the possibility...
(C) The experimental microwave dryer uses more electricity than future, improved models would be expected to use.
future models is out of scope..
(D) Drying clothes with the process would not cause more shrinkage than the currently used mechanical drying process causes.
strengthens..
(E) Many clothes that are frequently machine-dried by prospective customers incorporate thick metal parts such as decorative brass studs or buttons.
Right answer.. the microwave dryer usually heats metal objects, and scientists are perfecting a process that may work for small metal objects.. that still leaves clothes with thick metal parts which unusable...
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krish

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30 May 2005, 21:45
E it is.

(A) Metal snap fasteners on clothes that are commonly put into drying machines are about the same thickness as most hairpins.
Which means it's not going to be a problem.

(B) Many clothes that are currently placed into mechanical dryers are not placed there along with hairpins or other thin metal objects.
Even better.

(C) The experimental microwave dryer uses more electricity than future, improved models would be expected to use.
The stems says that it saves energy. So even if it uses more energy by some future unrealized model, it still have market potential before those future model is marketed.

(D) Drying clothes with the process would not cause more shrinkage than the currently used mechanical drying process causes.
Good then.

(E) Many clothes that are frequently machine-dried by prospective customers incorporate thick metal parts such as decorative brass studs of buttons.
Here's a problem. Thin metals would not be a problem, but thick metals are not garenteed to be problem free.
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30 May 2005, 22:06
OA is E!

I read B and then thought, if people do not leave hairpins etc then the whole research is readily doomed and the product would become unmarketable - hence I chose B.

But now I realise my mistake! - If people do not include hairpins, then, as the new dryers comsume less electricity and protect delicate fibers - they would definitely become more marketable then the existing mech. dryers!
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30 May 2005, 22:31
1) An experimental microwave clothes dryer heats neither air nor cloth.

2) Rather, it heats water on clothes, thereby saving electricity and protecting delicate fibers by operating at a lower temperature.

3) Microwaves are waves that usually heat metal objects, but developers of a microwave dryer are perfecting a process that will prevent thin metal objects such as hairpins from heating up and burning clothes.

Which of the following, if true, most strongly indicates that the process, when perfected, will be insufficient to make the dryer readily marketable?

(A) Metal snap fasteners on clothes that are commonly put into drying machines are about the same thickness as most hairpins.
- if so, then the dryer would be marketable when the process is perfected

(B) Many clothes that are currently placed into mechanical dryers are not placed there along with hairpins or other thin metal objects.
- if so, then it's not a problem even when the process is not perfected

(C) The experimental microwave dryer uses more electricity than future, improved models would be expected to use.
- it doesn't matter if the dryer uses more electricity than future models. The end point is, even with this current model, it already uses less electricity than conventional dryers. Thus, it would still be more efficient and economical.

(D) Drying clothes with the process would not cause more shrinkage than the currently used mechanical drying process causes.
- This only states that no performance is sacrificed in the new dryer. A plus point, in fact for making the dryer marketable.

(E) Many clothes that are frequently machine-dried by prospective customers incorporate thick metal parts such as decorative brass studs or buttons.

I'll go with E. The process only involves not heating up thin metal objects. No mention is made of thick metal parts, so we do not know how the dryer will behave when such metal objects are thrown in along with the clothes.
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Re: An experimental microwave clothes dryer heats neither air [#permalink]

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15 Sep 2015, 10:28
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: An experimental microwave clothes dryer heats neither air   [#permalink] 15 Sep 2015, 10:28
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