Marks 1
1
For a reconnaissance survey, it is necessary to obtain vertical aerial photographs of a terrain at an average scale of 1: 13000 using a camera. If the permissible flying height is assumed as 3000 m above a datum and the average terrain elevation is 1050 m above the datum, the required focal length (in mm) of the camera is
GATE CE 2024 Set 2
2
A line between stations P and Q laid on a slope of 1 in 5 was measured as 350 m using a 50 m tape. The tape is known to be short by 0.1 m.
The corrected horizontal length (in m) of the line PQ will be
GATE CE 2022 Set 1
3
The survey carried out to delineate natural features, such as hills, rivers, forests and manmade
features, such as towns, villages, buildings, roads, transmission lines and canals is
classified as
GATE CE 2014 Set 2
4
The type of surveying in which the curvature of the earth is taken into account is
called
GATE CE 2008
5
Systematic errors are those errors
GATE CE 1990
Marks 2
1
A map is prepared with a scale of 1:1000 and a contour interval of 1 m. If the distance between two adjacent contours on the map is 10 mm, the slope of the ground between the adjacent contours is
GATE CE 2024 Set 1
2
The plan of a map was photo copied to a reduced size such that a line originally
100mm, measures 90mm. The original scale of the plan was 1:1000. The revised
scale is
GATE CE 2007
3
The plan of a survey plotted to a scale of 10m to 1cm is reduced in such a way
that a line originally 10cm long now measures 9cm. the area of the reduced plan is
measured as 81cm2. the actual (m2) of the survey is
GATE CE 2007