Surveying MCQ Questions & Answers

31

The permissible error in chaining for measurement with chain on rough or hilly ground is

A) 1 in 100 B) 1 in 250 C) 1 in 500 D) 1 in 1000

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Answer & Solution

Answer: Option B

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32

The point where vertical line passing through the perspective centre intersects the plane of the photograph, is known as

A) Photo plumb point B) Plumb point C) Nadir point D) Isocenter

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Answer & Solution

Answer: Option A

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33

The angle between the prolongation of the preceding line and the forward line of a traverse is called

A) deflection angle B) included angle C) direct angle D) none of the above

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Answer & Solution

Answer: Option A

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34

To avoid large centering error with very short legs, observations are generally made

A) To chain pins B) By using optical system for centering the theodolite C) To a target fixed on theodolite tripod on which theodolite may be fitted easily D) All the above

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Answer & Solution

Answer: Option C

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35

For which of the following permanent adjustments of theodolite, the spire test is used ?

A) adjustment of plate levels B) adjustment of line of sight C) adjustment of horizontal axis D) adjustment of altitude bubble and vertical index frame

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Answer & Solution

Answer: Option C

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36

The resection by two point problem as compared to three point problem

A) gives more accurate problem B) takes less time C) requires more labour D) none of the above

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Answer & Solution

Answer: Option A

Solution:

In surveying, the resection by two-point problem as compared to the three-point problem gives more accurate results

Resection is a method used in surveying to determine the location of an unknown point by observing known points from that location. In the two-point resection method, observations are made from two known points to determine the position of the unknown point. This method is generally more accurate because it involves observations from two distinct directions, allowing for better triangulation and reducing errors.

On the other hand, the three-point resection method involves observations from three known points to determine the position of the unknown point. While it may seem more robust, it can sometimes be less accurate due to the potential for error propagation and the complexity of managing observations from three different directions.

Therefore, the correct option is Option A: gives more accurate results.

37

The angular distance of a heavenly body from the equator, measured along its meridian, is called

A) Declination B) Altitude C) Zenith distance D) Co-latitude

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Answer & Solution

Answer: Option A

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38

The station where observations are not made, but the angles at the station are used in triangulation series, is known as

A) Satellite station B) Subsidiary station C) Pivot station D) Main station

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Answer & Solution

Answer: Option C

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39

The scale of a tilted photograph of focal length f taken from an altitude H, along the plate parallel through principal point is

A) $$\frac{{\text{f}}}{{{\text{H}}\sec \theta }}$$ B) $$\frac{{{\text{f}}\sec \theta }}{{\text{H}}}$$ C) $$\frac{{\text{f}}}{{\text{H}}}$$ D) $$\frac{{\text{f}}}{{{\text{H}}\cos \frac{1}{2}\theta }}$$

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Answer & Solution

Answer: Option A

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40

The equation which is obtained by multiplying each equation by the coefficient of its unknowns and by adding the equations thus formed, is known as

A) Observation equation B) Conditional equation C) Normal equation D) None of these

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Answer & Solution

Answer: Option C

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Surveying MCQ Questions & Answers | Civil Engineering