Surveying MCQ Questions & Answers

51

23 cm × 23 cm photographs are taken from a flying height with a camera of focal length of 3600 m and 15.23 cm respectively. A parallax difference of 0.01 mm represents

A) 1 m B) 2 m C) 4 m D) 8 m

Discuss

Answer & Solution

Answer: Option A

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52

The declination and right ascension of the sun becomes 23° 27' N and 90° respectively on

A) March 21 B) June 21 C) September 21 D) December 22

Discuss

Answer & Solution

Answer: Option B

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53

The declination and right ascension of the sun becomes 23° 27' S and 270° respectively on

A) March 21 B) June 21 C) September 21 D) December 22

Discuss

Answer & Solution

Answer: Option D

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54

The following sights are taken on a “turning point”

A) foresight only B) backsight only C) foresight and backsight D) foresight and intermediate sight

Discuss

Answer & Solution

Answer: Option C

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55

The horizontal angle between the true meridian and magnetic meridian at a place is called

A) azimuth B) declination C) local attraction D) magnetic bearing

Discuss

Answer & Solution

Answer: Option B

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56

A ’level line’ is a

A) horizontal line B) line parallel to the mean spheriodal surface of earth C) line passing through the center of cross hairs and the center of eye piece D) line passing through the objective lens and the eye-piece of a dumpy or tilting level

Discuss

Answer & Solution

Answer: Option B

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57

Accidental errors

A) Do not follow any definite mathematical law B) Cannot be removed by applying corrections to the observed values C) Are generally small D) All the above

Discuss

Answer & Solution

Answer: Option D

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58

Pick up the correct statement from the following. The difference between the longitudes of the places is obtained.

A) By subtracting their longitudes if places are in the same hemisphere B) By adding their longitudes if places are in the different hemispheres C) By subtracting the sum of their longitudes exceeding 180° from 360° if places are in different hemispheres D) All the above

Discuss

Answer & Solution

Answer: Option C

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59

Refraction correction

A) completely eliminates curvature correction B) partially eliminates curvature correction C) adds to the curvature correction D) has no effect on curvature correction

Discuss

Answer & Solution

Answer: Option B

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60

The number of horizontal cross wires in a stadia diaphragm is

A) one B) two C) three D) four

Discuss

Answer & Solution

Answer: Option C

Solution:

A stadia diaphragm is a special part of a surveying instrument (like a theodolite or level).
Its main purpose is to help determine distances.
The diaphragm has horizontal cross wires.
Typically, a stadia diaphragm contains three horizontal cross wires: one at the top, one in the middle (the central crosshair), and one at the bottom.
These wires are used to read the stadia intercept on a graduated staff held at a distance, which then helps calculate the distance.
Options A, B, and D are incorrect because stadia diaphragms are designed with three horizontal cross wires.

Surveying MCQ Questions & Answers | Civil Engineering