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GATE 2024 CE (CE2) – Question 31

Geomatics Engineering · Distance and angle measurement, levelling, traversing, triangulation, total station · 1 mark · Multiple choice

What is the CORRECT match between the survey instruments/parts of instruments shown in the table and the operations carried out with them?

Instruments/Parts of instrumentsOperations
P - Bubble tubei - Tacheometry
Q - Plumb bobii - Minor movements
R - Tangent screwiii - Centering
S - Stadia cross-wireiv - Levelling
  1. P-ii, Q-iii, R-iv, S-i
  2. P-iv, Q-iii, R-ii, S-i
  3. P-i, Q-iii, R-ii, S-iv
  4. P-iii, Q-iv, R-i, S-ii

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Show answer and explanation

Correct answer: (B) P-iv, Q-iii, R-ii, S-i

Explanation

A bubble tube is used for levelling (iv), a plumb bob for centring over the station (iii), a tangent screw for fine (minor) movements of the telescope or plates (ii), and the stadia cross-wires for tacheometry (i).