Quiz : 3 – Surveying
1. The relationship between the length (l) and radius (r) of an ideal transition curve is given by
a) l α r
b) l α r²
c) l α 1/r
d) l α 1/r²
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2. The type of surveying in which the curvature of the earth is taken into account is called
a) Geodetic surveying
b) Plane surveying
c) Preliminary surveying
d) Topographical surveying
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3. The plan of a survey plotted to a scale of 10 m to 1 cm is reduced in such a way that a line originally 10 cm long now measures 9 cm. The area of the reduced plan is measured as 81 cm2. The actual area (m²) of the survey is
a) 10000
b) 6561
c) 1000
d) 656
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4. The observed magnetic bearing of a line OE was found to be 185°. It was later discovered that station O had a local attraction of +1.5°. The true bearing of the line OE, considering a magnetic declinaiton of 3.5°E shall be
a) 180°
b) 187°
c) 190°
d) 193°
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5. The following table gives data of consecutive coordinates in respect of a closed theodolite traverse PQRSP.
The magnitude and direction of error of closure in whole circle bearing are
a) 2.0 m and 45°
b) 2.0 m and 315°
c) 2.82 m and 315°
d) 3.42 m and 45°
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6. The lengths and bearings of a closed traverse PQRSP are given below.
The missing length and bearing, respectively of the line SP are
a) 207 m and 270°
b) 707 m and 270°
c) 707 m and 180°
d) 907 m and 270°
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7. The magnetic bearing of a line AB was N59°30’W in the year 1967, when the declination was 4°10’E. If the present declination is 3°W, the whole circle bearing of the line is
a) 299°20’
b) 307°40’
c) 293°20’
d) 301°40’
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8. The rise and fall method provides an arithmetic check on
a) back sights and fore sights
b) intermediate sights
c) back sights and intermediate sights
d) back sights, intermediate sights and fore sights
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9. A Bench Mark (BM) with Reduced Level (RL) = 155.305 m has been established at the floor of aroom. It is required to find out the RL of the underside of the roof (R) of the room using Spirit Levelling, The Back Sight (BS) to the BM has been observed as 1.500 m whereas the Fore Sight (FS) to R has been observed as 0.575 m (Staff held inverted). The RL (m) of R will be
a) 155.880
b) 156.230
c) 157.380
d) 157.860
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10. A light house of 120 m height is just visible above the horizon from a ship. The correct distance (m) between the ship and the light house considering combined correction for curvaturea and refraction, is
a) 39.098
b) 42.226
c) 39098
d) 42226
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11. The tangential method of tacheometry is
a) slower than stadia hair method
b) faster than stadia hair method
c) preferred as involves less computations to get reduced distances
d) preferred as chances of operational error are less compared to stadia hair method
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12. The focal length of the object galss of a tacheometer is 200 mm, the distance between the vertical axis of the tacheometer and the optical centre of the object glass is 100 mm and the spacing between the upper and lower line of the diaphragm axis is 4 mm. With the line of collimation perfectly horizontal, the staff intercepts are 1 m (top), 2 m (middle), and 3 m (bottom). The horizontal distance (m) between the staff and the instrument station is
a) 100.3
b) 103.0
c) 150.0
d) 153.0
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