GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- III (New) EXAMINATION — WINTER 2019
--- Content provided by FirstRanker.com ---
Subject Code: 2134003 Date: 3/12/2019
Subject Name: Geomatics Engineering
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
--- Content provided by FirstRanker.com ---
Q.1
(a) What is balancing of traverse? Enlist methods of same. [03]
--- Content provided by FirstRanker.com ---
(b) Figure out the R.L. of the top of a chimney from following data. [04]
| Instrument Station on B.M. | Reading | Angle of Elevation | Remarks |
|---|---|---|---|
| A | 0.765 | 15°47' | R.L. of BM = 750.000 m |
| B | 2.117 | 07°30' | Distance AB = 50 m |
(c) What do you understand by Tangential method of Tacheometry? [07]
Derive formulae of horizontal distance (D) and Elevation (V) for three cases of Tangential method.
Q.2
(a) What is called face left and face right related to theodolite? [03]
--- Content provided by FirstRanker.com ---
(b) Write short notes on the Well conditioned triangle. [03]
(c) Find out the R.L. of stations P & Q. Also find the elevation difference between both the stations and gradient of line PQ from the data given below. Take K = 100, C = 0.3 for tacheometry survey. [08]
| Instrument at Station | Staff | Vertical Angle | Stadia Readings |
|---|---|---|---|
| A | P | +2°39' | 1.455, 2.695, 4.035 |
| Q | -1°30' | 2.685, 3.360, 4.035 |
OR
(c) Prepare Gale’s Traverse Table to adjust closing error of clockwise traverse for following data [08]
| Line | AB | BC | CD |
|---|---|---|---|
| Length (m) | 232 | 212 | 174 |
| WCB | 100° | 250° | 342° |
Q.3
--- Content provided by FirstRanker.com ---
(a) Explain method of repetition for measurement of angles in theodolite survey. [03]
(b) What are the temporary adjustments of a theodolite? Explain in brief. [04]
(c) How would you set out a 6m x 7.5m room in a 10m x 8m size plot? Explain with sketch. [07]
OR
Q.3
--- Content provided by FirstRanker.com ---
(a) What are the capabilities of a Total Station? Enlist them. [03]
(b) How is the closing error of a traverse adjusted graphically? [04]
(c) Find out the magnitude and direction of closing error (if any) for the observations given in following table of Traverse Survey. [07]
| Line | OP | PQ | QR | RO |
|---|---|---|---|---|
| Length (m) | 314.8 | 361.6 | 471.8 | 407 |
| Bearing | 81°24' | 149°49' | 252°52' | 359°59' |
Q.4
(a) What do you understand by EDM? [03]
--- Content provided by FirstRanker.com ---
(b) Explain with sketch, the working of Drone survey. [05]
(c) It was required to determine the distance between two points A and B by tacheometer fitted with anallatic lens (K=100, C=0) with the instrument at A and staff at B, the observations made were at vertical angle +9°46' and staff intercepts of 1.915 m. What is the horizontal distance AB? Later on it was found that the constants of instrument were 100.1 and .08. What would by the percentage error in the horizontal distance computed? [06]
OR
Q.4
(a) Determine the horizontal distance between theodolite station and 6m long horizontal substance bar perpendicular to line of sight when the included angle is 53°. [03]
--- Content provided by FirstRanker.com ---
(b) What is basic principle of stadia? Derive the formula of distance measurement (Fixed hair stadia method) with horizontal line of sight. [04]
(c) Explain with sketch Systems of Triangulations. [07]
Q.5
(a) Define and explain working principle of EDM. [03]
(b) Derive the formulas for finding the Distance and Elevation of an inaccessible object by Trigonometric levelling when instrument stations are not in the same plane. [05]
--- Content provided by FirstRanker.com ---
(c) Define following terms [06]
a) Plunging b) Swinging c) Strength of figure d) Satellite station e) First order triangulation f) Reduction of centre
OR
Q.5
(a) Briefly discuss the significance and types of “Trigonometric Levelling”. [03]
--- Content provided by FirstRanker.com ---
(b) Derive the formulas: for finding the Distance and Elevation of an inaccessible object by Trigonometric levelling when instrument stations are in the same plane. [05]
(c) Find the area of the closed traverse by coordinate method for the following data: [06]
| Line | Northing | Southing | Easting | Westing |
|---|---|---|---|---|
| OP | 160.60 | 152.80 | ||
| PQ | 211.50 | 50.50 | ||
| QR | 188.90 | 92.4 | ||
| RO | 230.30 | 109 |
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University