Surveying Practice | Set-01 | Chain Survey

Surveying

1. A line of 5 m on the original map is shrunk to 4.6 m. Calculate the shrunk scale if the original scale of the map was 1 cm = 80 m.

a) 1 cm = 73.6 m
b) 1 cm = 86.95 m
c) 1 cm = 79.6 m
d) 1 cm = 92.4 m

2.The Vernier scale in which 10 division of Vernier scale is equal to 9 division of main scaled is called_

a) Direct Vernier
b) Double Vernier
c) Retrograde Vernier
d) Extended Vernier

3. Correction of length due to reduction to mean sea level is___

a) Directly proportional to radius of earth
b) Inversely proportional to measured length
c) Directly proportional to measured length
d) Inversely proportional to height above mean sea level

4. 10 division of Vernier scale are equal to 11 division of a main scale of each 0.1 mm. What is the least count of the Vernier scale?

a) 0.01
b) 0.009
c) 0.0.001
d) 0.9

5. Retrograde Vernier scale is one of the scale which has the smallest division of the Vernier is _________the smallest divisions of the main scale.

a) Equal to
b) Smaller than
c) It may larger or smaller than
d) Larger than

6. A 50 m length tape is held 2 m out of line. What is the true length.

a) 52.36 m
b) 48.76 m
c) 49.96 m
d) 45.46 m

7. No of arrows carried for chain survey in India_

a) 11
b) 10
c) 9
d) 12

8. The longest line passing through the center of the survey area is known as_

a) Tie line
b) Check line
c) Offset
d) Base line

9. The handle of 20 m chain is made up of __

a) 4 mm dia. steel
b) 6 mm dia. Brass
c) 6 mm dia. mild steel
d) 4 mm dia. Brass

10. The process of locating the intermediate points of survey line is _

a) Aligning
b) Extending
c) Offsetting
d) Ranging