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Advanced Surveying
Comments
Question
The difference of parallax for a given difference in elevation is independent of
Options
A. focal length of the camera
B. overall size of the photo graphs
C. percentage of overlap
D. all the above.
Correct Answer
all the above.
Advanced Surveying problems
Search Results
1. The prime vertical passes through
Options
A. the east point of the horizon
B. the west point of the horizon
C. the zenith point of the observer
D. the nadir point of horizon
E. all the above.
Show Answer
Scratch Pad
Discuss
Correct Answer: all the above.
2. Pick up the in-correct statement from the folowing :
Options
A. Correction for refraction is always negative
B. Correction for parallax is always positive
C. Correction for semi-diameter is always negative
D. Correction for dip is always negative
E. None of these.
Show Answer
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Discuss
Correct Answer: Correction for semi-diameter is always negative
3. The rate of change of parallax
dp
/
dh
with respect to change in
h
, may be expressed as
Options
A.
fB
/(
H
-
h
)
B.
fB
/(
H
-
h
)
2
C.
fB
/(
H
+
h
)
D.
fB
/(
H
+
h
)
2
.
Show Answer
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Discuss
Correct Answer:
fB
/(
H
-
h
)
2
4. The net ground area of a vertical photograph 20 cm x 20 cm on scale 1 : 10,000 having overlaps 60% and 30%, is
Options
A. 0.50 sq km
B. 0.56 sq km
C. 0.60 sq km
D. 0.64 sq km.
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Correct Answer: 0.64 sq km.
5. The scale of a tilted photograph of focal length
f
, taken from an altitude
H
, along the plate parallel through plumb point, is
Options
A.
B.
C.
D.
Show Answer
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Discuss
Correct Answer:
6. The point on the photograph where bisector between the vertical line through optical centre of the camera lens and the plate perpendicular meets, is known as
Options
A. principal point
B. isocentre
C. plumb point
D. perspective centre.
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Correct Answer: isocentre
7. The negative sign is assigned to
Options
A. reduction to mean sea level
B. correction for horizontal alignment
C. correction for slope
D. correction for slope
E. all the above.
Show Answer
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Correct Answer: all the above.
8. The method of surveying by triangula-tion was first introduced by the Dutchman Snell in
Options
A. 1600
B. 1615
C. 1630
D. 1650
E. 1680.
Show Answer
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Correct Answer: 1615
9. The angular distance of a heavenly body from the equator, measured along its meridian, is called
Options
A. declination
B. altitude
C. zenith distance
D. co-latitude.
Show Answer
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Correct Answer: declination
10. Triangulation surveys are carried out for providing
Options
A. planimetric control
B. height control
C. both planimetric and height control
D. none of these.
Show Answer
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Discuss
Correct Answer: both planimetric and height control
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