GATE 2025 MN – Question 20

Mining Geology, Mine Development and Surveying · Mine Surveying · 1 mark · Multiple choice

Match steel-tape errors P sag,Q temperature,R pull greater than standard to corrections1 positive only,2 negative only,3 positive or negative.

P–1,Q–2,R–3
P–1,Q–3,R–2
P–2,Q–3,R–1
P–2,Q–1,R–3

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Show answer and explanation

Correct answer: (C) P–2,Q–3,R–1

Explanation

Sag makes the tape path longer than the straight measured distance, requiring negative correction. Temperature can lengthen or shorten the tape relative to standard conditions. Excess pull stretches it, requiring positive correction. Therefore P–2,Q–3,R–1, C.

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