This document contains exam questions for a Remote Sensing and GIS Applications course. It includes 8 questions related to topics like remote sensing systems, GIS components and data structures, photogrammetry, natural disasters, and watershed drainage patterns. Students are instructed to answer 5 of the 8 questions, which vary in length from short answer to longer explanations and include diagrams/flowcharts. Key remote sensing and GIS concepts covered include raster vs vector data, active vs passive systems, interpolation methods, and using the technologies for applications like flood mapping and groundwater analysis.

1. JNTUW
ORLD
Code No: 07A70110 R07 Set No. 2
IV B.Tech I Semester Examinations,May/June 2012
REMOTE SENSING AND GIS APPLICATIONS
Civil Engineering
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) Distinguish between a camera and a sensor.
(b) Write a short notes on Ray lie scatter and Mie scatter. [6+10]
2. (a) Explain the procedure for calculation of spectral exitance maximum spectral
exitance and total spectral exitance.
(b) Explain atmospheric effects an spectral response patterns. [8+8]
3. What is interpolation? Mention four interpolation methods. Explain two interpo-
lation methods with examples. Why are the interpolation techniques introduced in
GIS? [16]
4. What is a primary key? A tuple? A relation? A foreign key? A relational join?
[16]
5. Sketch the following:
(a) Geometric components of relief displacement.
(b) Parallax displacements on overlapping vertical photographs. [16]
6. Explain how groundwater targeting can be done using remote sensing techniques.
[16]
7. Explain along with a flow chart how remote sensing and GIS is useful for the
preparation of flood inundated areas map for a given district. [16]
8. What is the relationship between the traditional map and its coounterpart? What
are the relationships among the four subsystems in GIS and the map? [16]
1
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2. JNTUW
ORLD
Code No: 07A70110 R07 Set No. 4
IV B.Tech I Semester Examinations,May/June 2012
REMOTE SENSING AND GIS APPLICATIONS
Civil Engineering
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) How are the surface water bodies used to convert into Recharge System to
augment the ground water?
(b) Explain in detail the Artificial Recharge Techniques and how you utilize sub
surface Geological Information for the storage of water received from Monsoon
Runoff. [8+8]
2. Explain the following:
(a) GIS categories.
(b) Components of GIS. [16]
3. Give four differneces of raster and vector GIS. Describe the funcitoning drum scan-
ner for digitizing map. [16]
4. (a) Explain the use of ground control in determining the flying height and air base
of aerial photographs:
(b) Define:
i. Conjugate principal points.
ii. Parallax.
iii. Orthophotograph.
iv. Relief displacement.
v. Nadir line. [6+10]
5. (a) Write any five disadvantages of using remotely sensed data.
(b) Explain:
i. Planck’s law and
ii. Wein’s displacement law. Also write the relevant mathematical expres-
sions. [10+6]
6. (a) Discuss the role of energy resources in remote sensing.
(b) Explain the concepts of spatial, spectral, radiometric and temporal resolutions.
[6+10]
7. What is rubber sheeting (conflation)? Why is it needed? How is it done? [16]
8. Write short notes on the following:
(a) Inland water quality.
2
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3. JNTUW
ORLD
Code No: 07A70110 R07 Set No. 4
(b) Drainage morphometry.
(c) Artificial recharge structures.
(d) Fluvial geomorphology. [4x4]
3
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4. JNTUW
ORLD
Code No: 07A70110 R07 Set No. 1
IV B.Tech I Semester Examinations,May/June 2012
REMOTE SENSING AND GIS APPLICATIONS
Civil Engineering
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) Draw a block diagram of a computer based GIS and describe all the compo-
nents.
(b) What are the advantages of GIS over map?
(c) Discuss the limitations that computer coding imposes on spatial data struc-
tures. [6+4+6]
2. Write short notes on:
(a) Classification of aerial photographs
(b) Photogrammetric activities
(c) Ground control
(d) Any four advantages of aerial photographs. [16]
3. (a) Describe compact method for storing raster data.
(b) Explain:
i. Chain Code.
ii. Run Length Code. [4+12]
4. Write short notes on:
(a) Atmospheric windows.
(b) Spectral reflectance signatures.
(c) Digital data analysis. [16]
5. (a) Discuss the basis for identifying groundwater recharge sites.
(b) Can remote sensing & GIS help in this? [8+8]
6. What is GIS? Write about the evolution of GIS and importance of GIS in real world
phenomenon. [16]
7. Explain along with a flow chart how remote sensing and GIS is useful for the
preparation of surface water inventory for a given district. [16]
8. Write any eight differences between active and passive remote sensing systems.
[16]
4
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5. JNTUW
ORLD
Code No: 07A70110 R07 Set No. 3
IV B.Tech I Semester Examinations,May/June 2012
REMOTE SENSING AND GIS APPLICATIONS
Civil Engineering
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. Explain the operations of whiskbroom and push broom scanner systems with the
help of neat sketches. [16]
2. (a) Give at least eight examples for the following GIS components:
i. Hardware
ii. Software.
(b) Explain GIS work flow. [8+8]
3. Describe data organisation for vector data structures. [16]
4. Describe the process of quantizing space into equal-sized rasters called grid cells.
What impact does grid cell size have on the locational accuracy? How would you
store points, lines, and polygons using a raster system? [16]
5. Control points A and B appear on a vertical photograph taken with a camera having
a 153mm lens. The horizontal ground distance between A and B is 700m and the
elevations of A and B are 218 and 161m above sea level. The photo coordinates of
the points are
xa = +46.86mm, ya = +53.60mm, xb = -35.62mm and yb = -43.28mm. Calculate
the flying height of the photograph using the trial and error approach. [16]
6. Differentiate between floods and droughts. Explain how remote sensing and GIS is
useful for the damage assessment because of these natural disasters. [16]
7. (a) Explain active Remote Sensing along with its advantages & disadvantages.
(b) Explain passive Remote Sensing along with its advantages & disadvantages.
[8+8]
8. (a) Discuss different drainage patterns found in watersheds and their characteris-
tics.
(b) Which satellite data you prefer in identifying drainage characteristics and
why? [8+8]
5
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