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Civil Engineering - Surveying

Exercise : Surveying - Section 4
46.
A standard steel tape of length 30 m and cross-section 15 x 1.0 mm was standardised at 25°C and at 30 kg pull. While measuring a base line at the same temperature, the pull applied was 40 kg. If the modulus of elasticity of steel tape is 2.2 x 106 kg/cm2, the correction to be applied is
- 0.000909 m
+ 0.0909 m
0.000909 m
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
The bearing of AB is 190° and that of CB is 260° 30'. The included angle ABC, is
80° 30'
99° 30'
70° 30'
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
The power of a lens
is reciprocal of its focal length
is positive if it is a convex lens
is negative if it is a concave lens
is measured in diopter.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
In an adjusted level, when the bubble is central, the axis of the bubble tube becomes parallel to
line of sight
line of collimation
axis of the telescope
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
If h is the difference in height between end points of a chain of length l, the required slope correction is
3.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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