The GATE Grind

GATE 2023 MN – Question 38

Mining Geology, Mine Development and Surveying · Mine Surveying · 2 marks · Multiple choice

Match devices P ground-penetrating radar, Q tactile sensor, R global navigation satellite system and S digital inclinometer with applications 1 spatial positioning, 2 borehole-deviation measurement, 3 robotic arm and 4 locating subsurface features.

  1. P–1; Q–2; R–3; S–4
  2. P–4; Q–3; R–1; S–2
  3. P–3; Q–4; R–2; S–1
  4. P–4; Q–3; R–2; S–1

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Show answer and explanation

Correct answer: (B) P–4; Q–3; R–1; S–2

Explanation

Radar reflections locate subsurface interfaces (P–4). A tactile sensor gives contact feedback to a robotic arm (Q–3). Satellite navigation provides position (R–1). A digital inclinometer measures inclination and thus borehole deviation (S–2). These four matches give B.

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