Subject 2018 Question Paper — Government College of Engineering and T…

Instructions

• Attempt any five questions selecting atleast one question from each Module.
• All questions carry equal marks.
• Assume suitable missing data if required.

Questions

Questions

• Q1. 1. a) Correct the observed altitude for the height of signal, refraction and curvature from the following data. Observed altitude = +4°48'39" Height of signal = 5.00 m Height of instrument = 1.20 m Coefficient of refraction = 0.07 R sin 1" = 30.88 Horizontal distance = 5200m b) What is axis signal correction? Obtain expression for axis signal correction. [20 marks]
• Q2. 2. a) A closed traverse was conducted round an obstacle and the following observations were made. Calculate the missing quantities. Side | Length(m) | Azimuth AB | 500 | 98°30' BC | 620 | 30°20' CD | 468 | 298°30' DE | -- | 230°00' EA | -- | 150°10' b) Differentiate between the following: i) Transit rule and Bowditch rule ii) Dependent and Independent coordinates [20 marks]
• Q3. 3. a) Find the difference in elevation between the stations P and Q from the data given below. The stadia constants are K=100 and C=0.3. Inst at. | Staff at | Vertical angle | Stadia readings A | P | +3°54' | 1.355, 2.580, 3.935 | Q | -1°36' | 0.985, 1.66, 2.335 b) Derive an expression for the horizontal distance D and vertical intercept V when the staff is vertical and normal. [20 marks]
• Q4. 4. a) The of triangulation stations A and B, 70 km apart, have elevations 260 m and 270 m respectively. The intervening ground may be assumed to have uniform elevation of 220 m Find the minimum height of the signal at B, so that the line of sight may not pass nearer the ground than 2.4 m b) Explain the following terms: i) Reduction to Centre ii) Correction for sag [20 marks]
• Q5. 5. a) Mention the various methods of setting out a simple curve. Explain the method of offsets from chords produced. b) The sag vertical summit curve is to be designed for the data given below: Gradients of tangents: +3.0% and -2.0% Safe sight distance = 150m [20 marks]
• Q6. 6. a) Obtain expression for following elements of simple circular curve i) Apex distance ii) Mid ordinate b) Two straights AD and BD are intersected by a line QP. The angles AQP and QPB are 150° and 160° respectively. The radius of the first arc is 650 m that of second arc is 450 m . If the chainages of intersection point D is 4756 m find the chainages of the tangent points and the point of compound curve [20 marks]
• Q7. 7. a) Explain the equipment needed for sounding in hydrographic surveying. b) What is GIS? Explain the components of GIS. [20 marks]
• Q8. 8. Write short notes on the followings: i) Fundamentals of GPS ii) Remote sensing [20 marks]