Civil Engineering - Surveying

26.
In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by
adding 180°, if the given bearing is less than 180°
subtracting 180°, if the given bearing, is more than 180°
changing the cardinal points, i.e. substituting N for S and E for W and vice-versa
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

27.
If L is the perimeter of a closed traverse, ΔD is the closing error in departure, the correction for the departure of a traverse side of length l, according to Bowditch rule, is
.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

28.
Pick up the correct statement from the following:
the theodolite in which telescope can be rotated in vertical plane is called a transit
when the vertical circle is to the left of the telescope during observation, it is called to be in left face
when the vertical circle is to the right of the telescope during observation, it is called to be in right face
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

29.
Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following
chain surveying
compass surveying
plan table surveying
tacheometric surveying.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

30.
While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is
correctly focussed
not correctly focussed
said to have parallax
free from parallax.
Answer: Option
Explanation:
No answer description is available. Let's discuss.