B.TECH - Semester 3 surveying 1 Question Paper 2020 (may)
Practice authentic previous year university questions for better exam preparation.
- (b) To measure a base line, a steel tape 30 m long standardized at $15^{\circ} \mathrm{C}$ with a pull of 100 N was used. Find the correction per tape length if the temperature at the time of measurement was $20^{\circ} \mathrm{C}$ and the pull exerted was 150 N . $\mathrm{E}=2.1 \times 10^{7} \math...
- (a) With the help of a neat sketch explain an earth work mass curve. How the 'Haul' may be ascertained from the curve?
- (a) Describe a station pointer with the help of a neat sketch.
- (a) Explain intersection method of plane table survey with neat sketches.
- (b) The following bearings were taken in traversing with a compass in a place where local attraction was suspected. Determine the true bearings of the lines if the declination was $5^{\circ} 10^{\prime} \mathrm{E}$. | Line | Fore Bearing | Back Bearing | | :---: | :---: | :---: | | $A B$ | $S 45^{\...
- (a) Derive a simple expression for the combined correction ' $h$ ' (in $m$ ) due to earth's curvature and atmospheric refraction in terms of the distance 'D' (in km ) between two levelling stations. The radius of earth is 6400 Km .
- (b) The following consecutive readings were taken with a dumpy level and a 3 m levelling staff on continuously sloping ground at a common interval of 20 m . $0.605,1.235,1.860,2.575,0.240,0.915,1.935,2.875,1.825 .2 .725$. Rule out a page of your answer book as level field book and fill the columns. ...
- (b) The area within the contour line at the side of a reservoir and the face of the proposed dam are as follows. | Reduced <br> level $(\mathrm{m})$ | 300 | 290 | 280 | 270 | 260 | 250 | 240 | 230 | | :--- | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: | | Area $\left(\mathrm{m}^{2...
- (a) Define the following with respect to a theodolite
- (i) Changing Face (ii) Transiting (iii) Swinging the telescope (iv) Vertical axis.
- (b) Following observations were taken with a tacheometer fitted with an anallatic lens having a multiplying constant 100. Determine the horizontal distance and difference in elevation between ' P ' and ' Q '. | Instrument at | Staff <br> at | Staff position Vertical angle | Bearing | Staff readings...
- (a) Explain the measurements of horizontal angle by repetition method using a theodolite and show how readings are entered in the page of a field book. 8
- (b) From the following tacheometric observations, determine the distance AB and the elevation of $A$ and $B$. Elevation of ' $Q$ ' Is 100.000 m and the constants are 100 and zero. | Instrument at | Staff <br> station | Horizontal <br> angle | Vertical angle | Staff readings (m) | | :---: | :---: | ...
- (b) The following observations were made on three stations $\mathrm{A}, \mathrm{B}$ and C from a station ' $P$ ' within the triangle $A B C . \quad \angle A P B=85^{\circ} 40^{\prime} 15^{\prime \prime}$, $\angle \mathrm{BPC}=146^{\circ} 32^{\prime} 10^{\prime \prime}$. | Line | Length in meters | ...
- (a) Explain the various systems in coordinates adopted in Astronomical Surveying with sketches.
- (b) Calculate the Sun's hour angle and azimuth at Sun rise at a place with following observations.
- (i) Declination of star $=24^{\circ} \mathrm{N}$ (ii) Latitude of observer $=42^{\circ} \mathrm{N}$.
- (a) Explain the following terms with reference to a compass survey with sketches.
- (i) Magnetic Meridian and True Meridian (ii) Whole Circle bearing and True bearing
- (b) Explain how a sounding point can be located by means of a range and one angle from the boat.
- (c) Explain longitudinal levelling with the help of sketches.
- (d) How will you determine the intervisibility of a point if the contour map is given?
- (e) Deduce the fundamental formula for horizontal distance between instrument station and staff station by fixed hair tacheometry. $$ \text { ( } 5 \times 4=20 \text { marks) } $$
- (a) What do you mean by orientation in plane table survey? Explain different methods of orientation of plane table.
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