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# Since the invention of digital readout, machine designers

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Senior Manager
Joined: 09 Aug 2005
Posts: 281

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21 Dec 2005, 16:56
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Since the invention of digital readout, machine designers have rushed to replace conventional dials and gauges with digital units. Yet the digital gauge has drawbacks in some situations. Since it presents an exact numeric value, it must be decoded and analyzed by a human operator; its meaning cannot be read in an instantaneous scanning. An analog dial or gauge can be marked with red to alert the operator when a value is entering a danger zone; a digital gauge cannot. And it is difficult to tell whether a digital readout is increasing or decreasing over time, while the up or down movement of a pointer on an analog gauge can be quickly and easily observed.
The author of the passage above would probably recommend the use of digital gauge in cases when
I. warning of a sudden rise or fall in value is needed
II. an operator must read and interpret several gauges within a few seconds
III. a precise numeric value is essential
(A) I only
(B) III only
(C) I and III only
(D) II and III only
(E) I, II, and III

Has this format been seen on the GMAT ?

What about furnace gauges that indicate r b y areas blue indicating add more gas ? 'INTERPRETING' aspect of a gaguge.

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VP
Joined: 22 Aug 2005
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Location: CA

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21 Dec 2005, 18:12
argument looks more like RC to me instead of CR

B is my pick if I came across this during test. In fact, I was looking for answer choice which says None of three .

Yes, it is given that: digital ones presents an exact numeric value
it is not given that their analog counterparts: do not presents an exact value (is it implied?).
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Whether you think you can or think you can't. You're right! - Henry Ford (1863 - 1947)

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Director
Joined: 14 Sep 2005
Posts: 984

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Location: South Korea

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21 Dec 2005, 19:15
Clearly (B) III Only.

A digital clock can tell you the exact second, even exact milliseconds.
However, you can never tell exact seconds from an analogue clock.
_________________

Auge um Auge, Zahn um Zahn !

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VP
Joined: 21 Sep 2003
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Location: USA

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21 Dec 2005, 19:30
Vote for B.

III is the only information that is explicitly stated in the premises.

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Director
Joined: 23 Jun 2005
Posts: 840

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GMAT 1: 740 Q48 V42

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21 Dec 2005, 21:14
definite B on this one!

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Senior Manager
Joined: 09 Aug 2005
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21 Dec 2005, 21:24
Yes it is B

I was reading too much in to it. -

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SVP
Joined: 16 Oct 2003
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22 Dec 2005, 10:04
Vote for Bachelors of this club.

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Senior Manager
Joined: 09 Aug 2005
Posts: 281

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23 Dec 2005, 20:11
OA is B.

Thanks guys

You guys are awesome with the right take/approach/first understanding on most questions

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23 Dec 2005, 20:11
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