List of top Geomatics Engineering Questions asked in GATE Geomatics Engineering

A 23 cm square format camera with a focal length of 152.4 mm is used for taking vertical aerial photographs with 60% end-lap. These photographs are viewed under a stereoscope with a base-height ratio of 0.15. The vertical exaggeration while stereoviewing these photographs is ___________ (Answer in integer).

In a map based on the UTM projection, the grid distance is in error with respect to the geodetic distance by about one in four thousand. If the map distance is 3 cm and the map scale is 1:25,000, then the geodetic distance is ___________m (rounded off to 2 decimal places).

Consider an infinitely sized square grid pattern (as shown in the figure below) overlaid on a flat ground at an elevation of 120 m above mean sea level. An image is taken by a camera from flying height of 450 m above mean sea level. Assume that the flying height remains constant throughout the operation of the flight. The flying direction is along the line FL, as shown in the figure below. The camera is looking in the off-nadir in the flight direction resulting in a low oblique photograph. Which of the following statements for the resulting low oblique photograph is/are correct? 

Consider a pair of overlapping vertical aerial photographs taken from a flying height of 665 m above a point A on the ground, with a camera having a focal length of 152.4 mm. The height of the point A above the mean sea level is 535 m. The parallax bar reading of the point A as measured from the photographs is 10.96 mm. Assuming the air base to be 400 m, the parallax bar constant is _________ mm.

In a Survey of India topographic map of scale 1:50,000, the contours are drawn conventionally at intervals of __________ m.