Surveying MCQ Questions & Answers

91

Height of instrument method of levelling is

A) more accurate than rise and fall method B) less accurate than rise and fall method C) quicker and less tedious for large number of intermediate sights D) none of the above

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Answer & Solution

Answer: Option C

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92

The slotted template method

A) Is prepared, by graphical method B) Is suitable for large areas with less control C) Is rapid and accurate D) All the above

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Answer & Solution

Answer: Option D

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93

When a star is between the pole and the horizon, the relationship between latitude (λ), zenith distance (z) and declination δ, is

A) θ = z + δ B) θ = δ - z C) θ = 180° - (z + δ) D) θ = (z + δ) - 180°

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Answer & Solution

Answer: Option C

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94

The length of a parallel of λ latitude between two meridians is equal to difference in longitudes multiplied by

A) sin λ B) cos λ C) tan λ D) cot λ

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Answer & Solution

Answer: Option B

Solution:

In surveying, the length of a parallel of latitude (λ) between two meridians is equal to the difference in longitudes multiplied by the cosine of the latitude (λ). This relationship arises from the spherical geometry of the Earth's surface. As you move away from the equator towards the poles, the parallels of latitude become shorter due to the convergence of meridians towards the poles. The cosine of the latitude accounts for this reduction in length as you move away from the equator. Therefore, the correct option is Option B: cos λ.

95

The hour angle of the heavenly body for Greenwich meridian equals the hour angle of the body for any other meridian + longitude:

A) Mean sun B) True sun C) Vernal equinox D) All the above

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Answer & Solution

Answer: Option D

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96

Which of the following is not used in measuring perpendicular offsets ?

A) line ranger B) steel tape C) optical square D) cross staff

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Answer & Solution

Answer: Option A

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97

The nearest star is so far away from the earth that the directions to it from two diametrically opposite points on the earth differs less than

A) 0.01 second B) 0.001 second C) 0.0001 second D) None of these

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Answer & Solution

Answer: Option C

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98

Right ascension of a heavenly body is its equatorial angular distance measured

A) Westward from the first point of Libra B) Eastward from the first point of Aeries C) Westward from the first point of Aeries D) Eastward from the first point of Libra

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Answer & Solution

Answer: Option B

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99

$$\alpha $$ and $$\beta $$ are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being ‘S’ and ‘f’ respectively. Parallax displacement of the point due to relief, is

A) $$\frac{{{\text{h}}\tan \alpha }}{{\text{S}}}$$ B) $$\frac{{{\text{h}}\tan \beta }}{{\text{S}}}$$ C) $$\frac{{{\text{h}}\left( {\tan \alpha + \tan \beta } \right)}}{{\text{S}}}$$ D) $$\frac{{{\text{h}}\left( {\tan \alpha - \tan \beta } \right)}}{{\text{S}}}$$

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Answer & Solution

Answer: Option C

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100

The method of surveying by triangulation was first introduced by the Dutchman Snell in

A) 1600 B) 1615 C) 1630 D) 1650

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Answer & Solution

Answer: Option B

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Surveying MCQ Questions & Answers | Civil Engineering