Exercise: Surveying

Questions for: Surveying

In case of a direct vernier scale
A:
graduations increase in opposite direction in which graduations of the main scale increase
B:
smallest division is longer than smallest division of the main scale
C:
graduations increase in the same direction in which graduations of the main scale increase
D:
none of these.
Answer: C
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In case of a double line river, contours are
A:
stopped at the banks of the river
B:
stopped at the edge of the river
C:
drawn across the water
D:
drawn by parabolic curves having their vertex at the centre of the water.
Answer: B
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While working on a plane table, the correct rule is :
A:
Draw continuous lines from all instrument stations
B:
Draw short rays sufficient to contain the points sought
C:
Intersection should be obtained by actually drawing second rays
D:
Take maximum number of sights as possible from each station to distant objects.
Answer: B
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Correction per chain length of 100 links along a slope of α radians, is
A:
100 α2
B:
100 α
C:
100 α3
D:
100 α-1.
Answer: B
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A transit is oriented by setting its vernier A to read the back azimuth of the preceding line. A back sight on the preceding transit station taken and transit is rotated about its vertical axis. The vernier A reads
A:
azimuth of the forward line
B:
bearing of the. forward line
C:
back bearing of the forward line
D:
equal to 360°-azimuth of the forward line.
Answer: A
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