# Civil Engineering - Surveying

Exercise : Surveying - Section 3
31.
If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as
direct vernier
double vernier
simple vernier.
Explanation:
No answer description is available. Let's discuss.

32.
Cross-staff is used for
setting out right angles
taking levels
measuring distances
none of these
Explanation:
No answer description is available. Let's discuss.

33.
The 'point of curve' of a simple circular curve, is
point of tangency
point of commencement
point of intersection
mid-point of the curve
Explanation:
No answer description is available. Let's discuss.

34.
For orientation of a plane table with three points A, B and C, Bessel's drill is
Align b through a and draw a ray towards c, align a through b and draw a ray towards c, finally align c through the point of intersection of the previously drawn rays
Align c through a and draw a ray towards b, align a through c and draw a ray towards b, finally align b through the point of intersection of the previously drawn rays
Align c through b and draw a ray towards a, align b through c and draw a ray towards a, finally align a, through the point of intersection of the previously, drawn rays
In the first two steps any two of the points may be used and a ray drawn towards the third point, which is sighted through the point of intersection of previously drawn rays in the final step.