GATE Civil Engineering (CE) 2017 Shift 1 Solved Paper

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Question : 28 of 65

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The accuracy of an Electronic Distance Measuring Instrument (EDMI) is specified as ±(a mm + b ppm). Which one of the following statements is correct?

Both a and b remain constant, irrespective of the distance being measured.
a remains constant and b varies in proportion to the distance being measured.
a varies in proportion to the distance being measured and b remains constant.
Both a and b vary is proportion to the distance being measured.

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