introduction to surveying

The difference between total sum of angles in Geodetic survey and plane survey for measuring every 195.5 km² of area is

• One second

• One minute

• One degree

• Three minute

First operation in a route survey is

• preliminary survey

• 
  

  Reconnaisence

• Control survey

• Location survey

Which relation is true in the case of a backward vernier?

• nv = (n-1)s

• 
  nv = (n+1)s

• 
  nv = (2n-1)s

• None of these

Surveys which are carried out to depict mountains, rivers, water bodies, wooded areas and other cultural details, are known as

• 
  Cadastral survey

• 
  City survey

• Topographical survey

• Engineering survey

Answer explanation

Topographical Survey:-
▪ For determining the natural features of a country such as hills, valleys, rivers, lakes, woods, etc., and also, the artificial features such as roads, railways, canals, buildings, towns, villages, etc.
➢ Cadastral Surveys:-
▪ In which additional details such as boundaries of fields, houses and other properties, path ways, are determined
➢ City Survey:-
▪ For laying out plots and construction streets, water supply systems, and sewers
➢ Engineering Surveys :-
▪ For determining quantities, and for collecting data for the design of engineering works such as roads, railways, reservoirs, or works in connection with water supply, sewerage etc.

Which of the following is made in connection with the construction of streets, water supply systems, sewers?

• 
  Hydrographic surveying

• 
  Traverse surveying

• Cadastral surveying

• City surveying

The revenue chain Suitable for

• Distance in miles and furlong

• 
  Area in acre

• Cadastral survey

• All of these

Answer explanation

Revenue chain ▪ Length = 33 ft ▪ No. Links = 16 ▪ Suitable for cadastral survey Gunter’s / surveyor’s chain ▪ Length = 66 ft ▪ No Links = 100 ▪ Length of one link = 0.66 ft ▪ Convenient for measuring distance in miles and furlong and area in acre

Smallest division of the vernier is longer than than the smallest division on the main scale in

• Direct vernier

• Backward vernier

• Retrograde vernier

• Both b and c

For an extended vernier

• nv = (n-1)s

• nv = (n+1)s

• nv = (2n-1)s

• None of these

Scale which is used to make or measure angles of any magnitude is

• 
  Plain scale

• Diagonal scale

• 
  Comparative scale

• 
  Scale of chords

Which relation is true in the case of a direct vernier?

• 
  nv = (n+1)s

• 
  nv = (n-1)s

• 
  nv = (2n-1)s

• None of these