List of top Surveying and Mapping Questions on Surveying asked in GATE GE

For the following observation equation \[ 2\alpha = 124^\circ 52' 22'' \quad \text{weight 4,} \] the weight of  \(\left( \frac{\alpha}{3} \right)\) \(\text{ is}\) __________________ (in integer)

A staff is held vertical at a distance of 100 m and 300 m, respectively. Observations are taken with a Tacheometer and staff intercepts, with the telescope kept horizontal, are 0.990 m and 3.000 m, respectively. The theodolite is set over a station having a RL of 950.500 m and the height of instrument is 1.425 m. The multiplicative constant of the Tacheometer is __________________ (round off to 2 decimal places).
Face Left and Face Right observations using a vernier theodolite will eliminate
An instrument is set up at a station P and the angle of depression to a vane, 1.20 m above the foot of the staff held at Q is 5°. The horizontal distance PQ is observed to be 300 m. The R.L. of point Q is __________________ m (round off to 3 decimal places). Given that the staff reading at a BM (Elevation 436.050 m) is 2.865 m.
Bowditch rule for adjusting a closed traverse of perimeter ‘l’ is based on the assumption that the probable error is proportional to
The Degree of Accuracy of a traverse having error of closure of 0.5 m and perimeter of 100 m is __________________ (round off to 3 decimal places).
Height of a station determined by Global Navigational Satellite System (GNSS) is 284.097 m and the geoid height of the station is –30.052 m. The elevation of the station is __________________ m (round off to 3 decimal places).
Satellite-Based NAVSTAR GPS Augmentation System(s) is/are
Identify the CORRECT statement(s)
Identify the CORRECT statement(s).
Two surveyors, P and Q measured a 20 m distance six times each, as given below (in m):
Surveyor P: 19.97, 20.02, 20.04, 19.98, 19.96, 20.03
Surveyor Q: 20.05, 20.07, 20.05, 20.06, 20.07, 20.07
On the basis of accuracy and precision of the measured values, choose the CORRECT statement.
Identify the error, which has all the following characteristics:
(i) Caused by observer’s misunderstanding and carelessness
(ii) Reading an angle counter-clockwise, but recording it as clockwise angle
(iii) Sighting the wrong target
(iv) Poor judgment by the observer