unit conversion

1 sq. mile= ____ acre

• 40

• 144

• 484

• 640

5 1/ 2 Yards = 

• 
  1 pole

• 1 rod

• 
  both a & b

• 1 Furlong

1 rood = 

• 40 sq. rod

• 40 sq. pole

• both a and b 

• 
  1 acre

30¼ square yards = 1 square ______

• 
  metre

• rood

• 
  rod

• 
  feet

8 Furlong =

• 1 Mile

• 10 Gunter’s chain

• 1 Fathom

• 
  1Cable Length

A survey station must be fixed with reference to two or three permanent objects and prepare

• Key plan

• Reference sketch

• Site sketch

• Index sketch

Which of the following statement is incorrect about band chain

• It maintains length very much better than the chain

• It can be repaired only by rivetting or soldering which is a difficult process.

• If carelessly used, it gets broken

• It can be easily read

1Cable Length = 

• 
  4 Pole

• 
  120 Fathom

• 
  6080 Feet

• 
  8 Furlong

........ Surveys for determining the feasibility and rough cost of the scheme.

• Preliminary

• Engineering

• Location

• Reconnaissance

........... Gunter's chain = 1 mile

• 18

• 80

• 10

• 120