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GATE CE 2020 Survey Quiz 2 (App update required to attempt this test)
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Question 1
In order to neutralize the curvature effect and refraction effect, the type of levelling adopted is__________
Question 2
A staff is placed on a benchmark (BM) of reduced level (RL) 100.000 m and a theodolite is placed at a horizontal distance of 50m from the BM to measure the vertical angles. The measured vertical angles from the horizontal at the staff readings of 0.400m and 2.400 m are found to be the same. Taking the height of the instrument as 1.400 m, the RL (in m) of the theodolite station is _________
Question 3
A line of levels was run from a benchmark of RL 51.540 and ended on a benchmark of RL 63.200. The sum of backsights and foresights were 86.755 m and 72.725 m respectively. The closing error of the work was ___ m.
Question 4
An instrument was setup at P and angle of elevation to a vane 4 m above the foot of staff held at Q was 9 ° 30'. The horizontal distance between P and Q was known to be 2000 m. What is the R.L. (in m) of staff station Q?
[Given that the R.L. of instrument axis was 2650.38 m and consider refraction and curvature corrections]
Question 5
A survey line was measured to be 285.5m with a tape having a nominal length of 30m. On checking, the true length of the tape was found to be 0.05 m too short. If the line lay on a slope of 1 in 10, the reduced length (horizontal length) of the line for plotting of survey work would be
Question 6
During a levelling work along a falling gradient using a Dumpy Level and a Staff of 3m length, following successive readings were taken: 1.785 2.935, 0.360, 1.320.
What will be the correct order of booking these four readings in a level book? (BS: Back Sight, IS: Intermediate Sight, FS: Fore Sight)
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ESE & GATE CESurveyingJul 13ESE & GATE CE
