Since the Invention of Digital Readout, Machine Designers have Rushed GMAT Critical Reasoning

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

1. warning of a sudden rise or fall in value is needed
2. an operator must read and interpret several gauges within a few seconds
3. 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

“Since the invention of digital readout, machine designers have rushed”- is a GMAT critical reasoning topic. This GMAT critical comes with five options and candidates need to choose the one which is correct. GMAT critical reasoning tests the logical and analytical skills of the candidates. To answer the question, a candidate can either find a piece of evidence that would weaken the argument or have logical flaws in the argument. Candidates get 65 minutes to answer 36 MCQ questions in the critical reasoning section of the GMAT.

Answer: (B)
Explanation: The question asked for the statement that would serve as a good reason on why the author would recommend the usage of digital gauge instead of analog.

Statement -1 :
This cannot be the answer. This is because an analog dial or gauge can be marked with red to alert the operator when a value is entering a danger zone. Moreover, in the passage that author has mentioned that analog gauge is the best and more optimized than digital gauge in this scenario. The person can easily observe the pointer during a fluctuation while it moves up and down.

Statement – 2:
This cannot be the answer. This is due to the fact that the digital gauge cannot be interpreted in an instant scan. The author clearly explained in the passage that it needs to be noted by a human operator. This is due to the fact that it represents an exact numeric value that takes time to be decoded and analyzed.

Statement – 3:
This is the right answer. The digital gauge has an advantage when representing values. When a precise and an accurate numerical value is recommended, the digital gauge can be effective. In the passage, the author supported analog gauge in terms of many aspects and elements. However, digital gauge has an advantage while noting the reading. It can show accurate values.

Out of all the options, the correct answer will have the correct statement. In this scenario, the third and last statement is the perfect choice for this question. So, according to this interpretation, the second option is the right answer when looked at carefully. The remaining options are all wrong answers as they do no include the right statement or have incorrect statements along with it.

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