What do you understand by surveying? What are the applications of surveying

Distinguish between the following:

Plans and Maps

Geodetic and Plain Surveying

Explain the Direct Ranging and Indirect Ranging with suitable diagrams.

The length of a surVey line when measured with a chain of 20 m nominal length was found to be 841·5 m When the chain was compared with a standard it was found to be 0·1 m too long. Compute the correct length of the line.

Explain, with a neat sketch, the working of a prismatic compass.

In an old map line AB was drawn to a magnetic bearing of 148° when the magnetic declination was 3° East. To what magnetic bearing should the line be set now, if the magnetic declination is
8° West?

4. The following data were recorded in running a compass traverse, and the length of AB and CD have been omitted:
Line Length in m Bearing
AB 33°
BC 300 86°
CD 169°
DE 450 243°
EA 268 317°

Determine the omitted quantities.

5. What is Plane Table Surveying What are its advantages and disadvantages Mention the errors in plane tabling.

6. The following successively with instrument was readings. readings were observed a levelling instrument. The shifted after 5th and 11th
0.585, 1.010, 1.735,3.295,3.775,
0.350, 1.300, 1.795,2.575,3.375,
3.895,1.735,0.635 and 1.605 m.

Determine the R.L. of various points by rise and fall method, ifRL of first point is 136·440 m.

With the help of a neat sketch, explain the fundamental axes of a theodolite.

Define the following terms associated with theodolite survey:

Centring

Line of Collimation

Transiting

Face Right Observation

Changing the Face

8. Write short notes on any two of the following:

Two point problem in plane table survey

Types of cross staffs

Points that should be considered while selecting station points

9. Write short notes on any four of the following:

Magnetic Dip

Accessories of a Plane Table

Bench Mark

Loose Needle Method

Correction of Sag and Pull

Local Attraction