You have to observe an included angle with better accuracy than what is achievab

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Question
You have to observe an included angle with better accuracy than what is achievable by a vernier, you will prefer the method of
Options
A. repetition
B. reiteration
C. double observations
D. exactness.

Correct Answer

repetition

Surveying problems

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4. The chaining on sloping ground is
Options
A. easier along the falling gradient
B. easier along the up gradient
C. equally convenient along falling as well as up gradient
D. all the above.

5. Rankine's deflection angle in minutes is obtained by multiplying the length of the chord by
Options
A. degree of the curve
B. square of the degree of the curve
C. inverse of the degree of the curve
D. none of these.

7. If a linear traverse follows a sharp curve round a large lake where it is difficult to have long legs, the accuracy of the traverse may be improved by
Options
A. taking short legs
B. making repeated observations of angular and linear measurements
C. making a subsidiary traverse to determine the length of a long leg
D. all the above.

8. The operation of resection involves the following steps
1. rough orientation of the plane table
2. the three lines form a triangle of error
3. drawing lines back through the three control points
4. select a point in the triangle of error such that each ray is equally rotated either clockwise or anti clockwise
5. the points obtained by three rays is the correct location.
The correct sequence is
Options
A. 1, 3, 2, 4, 5
B. 1, 2, 3, 4, 5
C. 1, 4, 3, 2, 5
D. 1, 4, 2, 3, 5

9. Pick up the correct statement from the following
Options
A. 1 second of arc corresponds to a displacement ratio of 1:206, 300
B. 1 degree of arc corresponds to a displacement ratio of 1:57
C. the angular errors tend to propagate themselves along a traverse as the square root of the number of stations
D. the errors arising from the linear measures tend to be roughly proportional to the lengths of the lines
E. all the above.

10. Check lines (or proof lines) in Chain Surveying, are essentially required
Options
A. to plot the chain lines
B. to plot the offsets
C. to indicate the accuracy of the survey work
D. to increase the out-turn

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