Surveying and Levelling Exam Questions and Answers - Set 12 - ObjectiveBooks
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# Practice Test: Question Set - 12

1. Benchmark is established by
(A) Hypsometry
(B) Barometric levelling
(C) Spirit levelling
(D) Trigonometrical levelling

2. If a tacheometer is fitted with an anal-latic lens
(A) Additive constant is 100, multiplying constant is zero
(B) Multiplying constant is 100, additive constant is zero
(C) Both multiplying and additive constants are 100
(D) Both multiplying and additive constants are 50

3. Short offsets are measured with
(A) An ordinary chain
(B) An invar tape
(C) A metallic tape
(D) A steel tape

4. The representation of general topography of a very flat terrain is possible only
(A) By drawing contours at large interval
(B) By drawing contours at small interval
(C) By giving spot levels at large interval
(D) By giving spot levels to salient features at close interval

5. True meridian of different places
(A) Converge from the South Pole to the North Pole
(B) Converge from the North Pole to the South Pole
(C) Converge from the equator to the poles
(D) Run parallel to each other

6. 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

7. To set out a parallel from a given inaccessible point to a given line AB, the following observations are made:
Distance AB and angle PAM = a and angle PBA = b are measured where M is a point on the line BA produced. The perpendicular to the desired parallel line from A and B are:
(A) AB/(cot b - cot a)
(B) AB/(cos b - cos a)
(C) AB/(cot a - cot b)
(D) AB/(cot a - cos b)

8. Pick up the correct statement from the following:
(A) A refracting telescope consists optically of two lenses
(B) The principal axes of both the lenses coincide the optical axis of the telescope
(C) The lens nearer the object to be viewed is convex and is called objective
(D) All the above

9. In case of a direct vernier scale
(A) Graduations increase in opposite direction in which graduations of the main scale increase
(B) Smallest division is longer than smallest division of the main scale
(C) Graduations increase in the same direction in which graduations of the main scale increase
(D) None of these

10. The operation of making the algebraic sum of latitudes and departures of a closed traverse, each equal to zero, is known
(A) Balancing the sights
(B) Balancing the departures
(C) Balancing the latitudes
(D) Balancing the traverse

11. Dumpy level is most suitable when
(A) The instrument is to be shifted frequently
(B) Fly levelling is being done over long distance
(C) Many readings are to be taken from a single setting of the instrument
(D) All of the above

12. Magnetic declination at any place
(A) Remains constant
(B) Does not remain constant
(C) Fluctuates
(D) Changes abruptly

13. If the length of a chain line along a slope of θ° is l, the required slope correction is
(A) 2l cos2 θ/2
(B) 2l sin2 θ/2
(C) l tan2 θ/2
(D) l cos2 θ/2

14. The combined effect of curvature and refraction over a distance ‘L’ kilometres is
(A) 67.2 L2 mm
(B) 76.3 L2 mm
(C) 64.5 L2 mm
(D) None of these

15. The systematic errors which persist and have regular effects in the performance of a survey operation are due to
(A) Carelessness
(B) Faulty instrument
(C) Inattention
(D) None of these

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