# geoinformatics 2 - model paper ```CIVIL ENGINEERING
Paper: Geo Informatics II
Paper Code: ETCE206
Semester: IV
Marks: 75
Note: All questions are compulsory.
UNIT 1
Q.1
Q.2
Q.3
Q.4
(A)
(B)
Q.5
Q.6
Explain co-efficient of refraction.
(2.5)
What is Geodetic Survey?
(2.5)
What is Probability Curve &amp; What are its uses.
(5)
Explain following: (5)
Longitude
Latitude &amp; Co-latitude.
What is Sounding &amp; What are various instrument used in sounding? (5)
How parallax affect image in Photo Grammatic Survey.
(5)
UNIT 2
Q.7 The mean vertical angles from A, reading on to a target at B, is 24’30”. The
height of instrument at A is 5.00 meter. The height of target at B is 4.00 meter. If
the distance between two points is 20 km, assured the usual value for the coefficient of refraction &amp; obtain the difference of ground level between the two
points. The radius of the earth may be taken as 3956 km.
(6.5)
Q.8 The following are the measured angles of a quadrilateral ABCD with the
Central point E
(6)
Triangle
Central Angle
L.H.Angle
R.H.Angle
AEB
59003’10”
61000’54”
59056’06”
BEC
118023’50”
32003’54”
29032’06”
CED
60032’05”
56028’01”
62059’49”
DEA
122000’55”
28042’00”
29017’00”
UNIT 3
Q.9
Explain setting out of building in detail?
Q.10 Explain Route Survey in detail?
(6.5)
(6)
UNIT 4
Q.11 Calculate the sun’s azimuth &amp; hour angle at a place in latitude 42030’N
When its declination is
(6)
(A) 22012’ N
(B) 22012’ S
Q.12 What are Parallax &amp; Refraction? How do they affect the measurement of
vertical angles in astronomical work?
Give rough values of the correction necessary when measuring a vertical angle of
450.
(6.5)
UNIT 5
Q.13 Write a note on remote sensing observation platforms. Differentiate
between active &amp; passive remote sensing.
(6.5)
Q.14 An object has an elevation of 400 m above sea level the distance from the
principle point to the image of that point on the photograph is 4.86 cm. If the
datum scale is 1/12000 &amp; focal length of the camera is 24 cm. determine the relief
displacement of the point.
(6)
```