Surveying MCQ Questions & Answers

21

Check lines (or proof lines) in Chain Surveying, are essentially required

A) To plot the chain lines B) To plot the offsets C) To indicate the accuracy of the survey work D) To increase the out-turn

Discuss

Answer & Solution

Answer: Option C

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22

A negative declination shows that the magnetic meridian is to the

A) eastern side of the true meridian B) western side of the true meridian C) southern side of the true meridian D) none of the above

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Answer & Solution

Answer: Option B

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23

The latitude of the observer's position, is

A) Elevation of the elevated pole B) Declination of the observer's zenith C) Angular distance along the observer's meridian between equator and the observer D) All the above

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Answer & Solution

Answer: Option D

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24

If the staff is not held vertical at a level¬ling station, the reduced level calculated from the observation would be

A) true R.L. B) more than true R.L. C) less than true R.L. D) none of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

In levelling, it is essential that the staff is held vertically at the observation point.

If the staff is tilted (not vertical), the horizontal distance between the instrument and the staff increases slightly.

This results in the levelling instrument recording a reading higher than it would if the staff were vertical.

Since the reading is higher, the calculated Reduced Level (R.L.) becomes lower than the actual or true R.L.

Therefore, a non-vertical staff leads to a reduced level that is less than the true reduced level.

Hence, the correct answer is Option C: less than true R.L.

25

At the first point of Aeries, the sun moves

A) Northward B) Southward C) From south to north of the equator D) From north to south of the equator

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Answer & Solution

Answer: Option C

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26

The cross hairs in the surveying telescope are placed

A) midway between eye piece and objec-tive lens B) much closer to the eye-piece than to the objective lens C) much closer to the objective lens than to the eye piece D) anywhere between eye-piece and objective lens

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Answer & Solution

Answer: Option B

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27

The most convenient co-ordinate system for specifying the relative positions of heavenly bodies on the celestial sphere, is

A) Altitude and azimuth system B) Declination and hour angle system C) Declination and right ascension system D) Declination and altitude system

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Answer & Solution

Answer: Option C

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28

The smaller horizontal angle between the true meridian and a survey line, is known

A) Declination B) Bearing C) Azimuth D) Dip

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Answer & Solution

Answer: Option C

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29

If $$\delta $$ is the declination of the Polaris and $$\lambda $$ is the latitude of the place, the azimuth of the Polaris, is

A) $$\frac{{\cos \delta }}{{\cos \lambda }}$$ B) $$\frac{{\cos \left( {{{90}^ \circ } - \delta } \right)}}{{\cos \left( {{{90}^ \circ } - \lambda } \right)}}$$ C) $$\frac{{\sin \left( {{{90}^ \circ } - \delta } \right)}}{{\sin \left( {{{90}^ \circ } - \lambda } \right)}}$$ D) $$\frac{{\tan \left( {{{90}^ \circ } + \delta } \right)}}{{\tan \left( {{{90}^ \circ } + \lambda } \right)}}$$

Discuss

Answer & Solution

Answer: Option A

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30

The difference in longitude of two places expressed in time is equal to the difference in their

A) Sidereal time B) Apparent solar time C) Mean solar time D) All the above

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Answer & Solution

Answer: Option D

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Surveying MCQ Questions & Answers | Civil Engineering