GIS - Common Section - Geomatics Engineering Previous Year Questions

1

2024 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2024

Identify the type of digitizing error in the following figure.

A

Dangling arc

B

Overshoot

C

Undershoot

D

Missing label

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2

2024 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2024

Which of the following is NOT a derivative of digital elevation model (DEM)?

A

Slope

B

Aspect

C

Contour

D

Emissivity

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3

2024 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2024

Which of the following is a core vector GIS operation?

A

Overlaying

B

Contrast stretching

C

Histogram equalization

D

Band ratioing

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4

2024 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2024

Which of the following statements is/are CORRECT?

A

Network analysis can be done with vector data.

B

Linear features are clearly identified as discrete features in vector database.

C

Satellite images are in vector format.

D

Digital elevation model is in raster format.

Check answer

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5

2024 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2024

In GIS, buffer is a zone with a specified width surrounding a spatial feature. Which of the following statements regarding buffer is/are CORRECT?

A

For a point feature, buffer is an ellipse with minor and major axes as buffer distances

B

For a line feature, buffer is a band with a specified distance created around the line conforming to the line’s curve

C

Buffer zones are polylines

D

For a polygon feature, buffer is a belt of a specified distance from the edge of the polygon and conforming to its shape

Check answer

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6

2024 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2024

Which of the following statements is/are INCORRECT in the context of GIS?

A

CLIP erases a part of one of the input layers.

B

SPLIT overlays polygons and keeps all areas in both layers.

C

INTERSECT overlays polygons and keeps only the common portions of both layers.

D

UNION overlays polygons and keeps all areas in both layers.

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7

2025 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2025

Which one of the following statements is NOT correct in the context of Geographic Information System?

A

A raster data model makes use of grid of cells that are organized into rows and columns for representation of features on earth

B

Vector data model represents the spatial features on Earth’s surface in terms of points, lines or polygons

C

Resampling is applied after georeferencing of vector datasets

D

Topology is used in vector data models to ensure spatial data integrity

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8

2025 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2025

Which one of the following statements is NOT correct in the context of shapefile?

A

It is an example of georelational data model

B

It is a topological data model

C

It treats points as pairs of (x, y) coordinates

D

In this, polygons can have duplicate arcs for shared boundaries

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9

2025 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2025

The table below is an attribute table about employee records. Which attribute can be used as a primary key?

A

Emp_Name

B

Emp_ID

C

Emp_Dept

D

Emp_Desig

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10

2025 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2025

Find the best match between column I and column II for the following scenario related to spatial operators.

A

P-2; Q-3; R-1

B

P-1; Q-3; R-2

C

P-2; Q-1; R-3

D

P-1; Q-2; R-3

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11

2025 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2025

Consider the nodes of a square grid A, B, C and D (shown in figure below), where a certain parameter is measured. The distances between the points is also indicated in the same figure. For example, the value observed at point A is 120 and is indicated as A (120), and the distance between points A and B is 1.0 units. The value at point ‘X’ computed using bilinear interpolation, using the values at points A, B, C and D is ______.

A

175

B

152

C

198

D

210

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12

2025 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2025

The first value in the output of a SQL query (given below) when run on a table having name “Table-1” is? SQL Query: SELECT LastName FROM Table-1 WHERE State=“IN” ORDER BY FirstName

A

Ramirez

B

Douglas

C

Paul

D

Squires

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13

2025 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2025

In a Geographic Information System database, a stream is represented by a line and houses are represented by polygons. The pollution in the stream is affecting houses within a distance of 500 m on both sides. Which vector data analysis operations should be performed to identify houses affected by the pollution in the stream?

A

Buffer and Overlay

B

Dissolve and Overlay

C

Buffer

D

Split

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14

2025 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2025

Which of the following statements is/are correct in the context of Voronoi polygon?

A

A Voronoi polygon may contain more than one point, especially where the density of points is higher

B

The center of a Voronoi polygon is a circumcenter of a Delaunay triangle

C

Each intersection of Voronoi edges belongs to at least three Voronoi polygons

D

Voronoi polygons and Delaunay triangles are geometric dual of each other

Check answer

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15

2022 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2022

In GIS database, which type of attribute may be used to represent area?

A

Nominal

B

Interval

C

Ratio

D

Ordinal

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16

2022 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2022

What is attribute uncertainty?

A

Error due to imprecision in coordinate registration

B

Error due to incorrect labelling or quantification of features

C

Error in the source document due to cartographic bias

D

Error associated with displacement of the object from its true location

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17

2022 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2022

In GIS, ______ triangulation is a proximal method that satisfies the requirement that a circle drawn through the three nodes of a triangle contains no other node.

A

Dalhousie

B

Delaunay

C

David

D

Davenport

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18

2022 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2022

In GIS, reclassification is performed to

A

group ranges of values into a single value within a data layer

B

segment a data layer into multiple data layers

C

combine multiple data layers to a single data layer

D

classify a data layer using many attributes

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19

2023 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2023

Which vector data analysis tool combines geometries and attributes from different layers?

A

Overlay

B

Map Manipulation

C

Buffer

D

Cartesian distance measurement

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20

2023 · Geomatics Engineering · Common Section · GIS

Geomatics Engineering (GE) 2023

Match the following errors (Column 1) in spatial data digitization with their descriptions (Column 2).

Column 1	Column 2
(P) Mis-located entities	1) Points, lines or boundary segments digitized twice
(Q) Missing labels	2) Points, lines or boundary segments digitized in wrong place
(R) Artefacts of digitization	3) Undershoots, overshoots, wrongly placed nodes loops or spikes
(S) Duplicate labels	4) Undefined polygons
(T) Duplicate entities	5) Two or more identification labels for same polygon

A

P-2, Q-4, R-3, S-5, T-1

B

P-1, Q-2, R-3, S-5, T-4

C

P-2, Q-1, R-4, S-3, T-5

D

P-2, Q-4, R-3, S-1, T-5

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