Which of the following introduces an error of about 1 in 1000 if 20 m chain is used - Surveying Quiz

Civil Engineering : Surveying - Quiz(MCQ)

Which of the following introduces an error of about 1 in 1000 if 20 m chain is used

A)

length of chain 20 mm wrong

B)

one end of the chain 0.9 m off the line

C)

one end of chain 0.9 m higher than the other

D)

All of the above

Correct Answer : All of the above

Explanation : * length of chain 20 mm wrong
* one end of the chain 0.9 m off the line
* one end of chain 0.9 m higher than the other
* middle of the chain 0.45 m off the line

Recently Updated in Surveying Questions

A sewer is laid from a manhole A to a manhole B, 250 m away along a gradient of 1 in 125. If the reduced level of the invert at A is 205.75 m and the height of the boning rod is 3 m, the reduced level of the sight rail at B, is_______.

A)

202.75 m

B)

206.75 m

C)

208.75 m

D)

211.75 m

Correct Answer : Option (B) : 206.75 m

In a closed traverse, sum of south latitudes exceeds the sum of north latitudes and the sum of east departures exceeds the sum of west departures, then, the closing line will lie in

A)

north east quadrant

B)

north-west quadrant

C)

south-west quadrant

D)

south-east quadrant

Correct Answer : Option (B) : north-west quadrant

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A)

achromatic

B)

is aplanatic

C)

Both (A) and (B)

D)

Neither (A) nor (B)

Correct Answer : Option (C) : Both (A) and (B)

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