1) What is the
fundamental difference between Surveying and Leveling?
Ans: In Surveying, the measurements are taken in the horizontal plane, but
in Leveling they are taken in the vertical plane.
2) What is the fundamental difference between Plane Surveying and Geodetic surveying?
2) What is the fundamental difference between Plane Surveying and Geodetic surveying?
Ans: In the Plane surveying, the
curvature of the earth is not considered. But in Geodetic surveying, the curvature
of the earth is considered.
3) What do you mean by the terms ‘Topographical map’ and ‘Cadastral map’?
3) What do you mean by the terms ‘Topographical map’ and ‘Cadastral map’?
Ans: A map which shows the natural
features of a country such as rivers, hills, roads, railways, villages, towns
etc. Is known as Topographical map, and one which shows the boundaries of
estates, fields, houses, etc. Is known as a Cadastral map.
4) What is the main principle of Surveying?
4) What is the main principle of Surveying?
Ans: The fundamental principle of
surveying is to work from the whole to the part.
5) How is a chain folded and unfolded?
5) How is a chain folded and unfolded?
Ans: In order to fold the chain, a
chainman moves forward by pulling the chain at the middle so that two halves
come side by side. Then he places the pair of links on his left hand with his
right hand until the two brass handles appear at the top.
To unfold the chain, a chainman holds the two brass handles in his left hand and throws the bunch with his right hand. Then one chainman stands at a station holding one handle and another chainman moves forward by holding the other handle.
To unfold the chain, a chainman holds the two brass handles in his left hand and throws the bunch with his right hand. Then one chainman stands at a station holding one handle and another chainman moves forward by holding the other handle.
6) In a chaining operation, who is the leader and who is the follower?
Ans: The chainman at the forward end of the chain who drags the chain is
known as the leader. The one at the rear end of the chain is known as the
follower.
7) While chaining a line, you have to measure through a steep sloping ground. What method should you apply?
7) While chaining a line, you have to measure through a steep sloping ground. What method should you apply?
Ans: The Stepping method.
8) Two stations are not inter visible due to
intervening high ground. How will you range the line?
Ans: The ranging is to be done by the Reciprocal Method.
9) What do you mean by RF?
Ans: The ratio of the distance on the drawing to the corresponding actual
length of the object is known as RF.
10) What is the difference between Plain scale and Diagonal scale?
10) What is the difference between Plain scale and Diagonal scale?
Ans: The Plain scale represents two
successive units. The diagonal scale represents three successive units.
11) What is Hypotenuse Allowance?
Ans: When one chain length is measured
on sloping ground, then it shows a shorter distance on the horizontal plane.
The difference between the sloping distance and horizontal distance is known as
the Hypotenuse Allowance.
12) How many ranging rods are required to range a
line?
Ans: At least three ranging rods are required for direct ranging, and at
least four for indirect ranging.
13) What is the length of one link in a 20 m chain?
Ans: The 20 m chain is divided into 100 links. So, one link is 0.2 m, i.e. 20
cm long.
14) What is Transit Theodolite?
14) What is Transit Theodolite?
Ans: A transit Theodolite is one in
which the telescope can be revolved completely about the horizontal axis in a
vertical plane.
15) What are the functions of a Theodolite?
15) What are the functions of a Theodolite?
Ans: The function of a theodolite is
to measure the following quantities:
a) Horizontal angle, b) Vertical angle,
c) Deflection angle, d) Magnetic Bearing, e) Horizontal Distance.
16) What is the least count of Theodolite?
Ans: The difference between the value of the smallest division of the main
scale and that of the smallest division of the venire scale known as the least
count of the theodolite. It is the least value that can be measured by
theodolite.