Top 10 Basic And Important Interview Question & Answer From Surveying Engineering
Some Basic or Important Interview Questions and Answers Based on Surveying (Civil Engineering)
Q.- Differentiate between Plane surveying and Geodetic surveying.
- The surveys in which the earth’s surface is assumed as a plane surface and earth curvature is ignored are called plane surveys.
- The surveys in which curvature of the earth is taken into account and a higher degree of accuracy in linear, as well as angular observations, is taken are known as geodetic surveys.
Q.- What is M.S.L?
The mean sea level datum obtained by making hourly observations of the tides at any place over a period of 19years is as MSL.
Q.- What is the baseline in surveying?
The longest of the chain lines used in making a survey is generally regarded as a baseline.
Q.- Explain the fundamental principles of surveying.
- To work from whole to part.
- To fix the positions of new stations by at least two independent processes.
Q.- Explain the difference between a plan and a map.
- The plan is constructed by usual orthographic projections, disregarding the earth’s curvilinear surface.
- A plan is drawn on a relatively large scale.
- If the scale is relatively small, a plan is called a map.
- A map generally shows some additional features such as relief, and contour lines to indicate undulations on the ground.
Q.- What is the purpose of Cadastral Surveys?
Fixing of property lines, to show boundaries of fields, buildings etc. This is to be done by a revenue engineer.
Q.- What do you understand by Scale in surveying?
Scale is the fixed ratio that every distance on the plan bears with the corresponding distance on the ground. For example, 1cm = 10m
Q.- Name different types of chains used in chain surveying.
- Metric Chain
- Gunter’s Chain
- Revenue Chain
- Engineer’s chain
Q.- Explain centring in surveying.
The process of setting up the instrument exactly above the station mark. Plumb bob is made use of.
Q.- What are bathymetric curves?
When the contours are drawn underwater, they have termed submarine contours, fathoms or bathymetric curves.