Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 7 (Q.No. 41)
41.
The staff reading at a distance of 80 m from a level with the bubble at its centre is 1.31 m. When the bubble is moved by 5 divisions out of the centre, the reading is 1.39 m. The angular value of the one division of the bubble, is
28.8 secs
41.25 secs
14.52 secs
25.05
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
11 comments Page 2 of 2.

Jay Ghosh said:   10 years ago
206265 = s/d.

s = 1.39-1.31 = 0.08 m/5 div.

= (206265*0.08)/80.

= 206.265 sec/5 div.

= (206.265*1)/5.

= 41.253 sec/1 div.

Answer B.
(1)


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