JNTU
JNTU B.Tech II SURVEYING AND OFFSHORE STRUCTURES Previous Question Paper (April/May - 2018 - R16)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit.
PART A
Define True meridian and Magnetic Meridian.
Answer
True Meridian is the line passing through a point on the earth's surface and the geographic North and South poles. Magnetic Meridian is the direction indicated by a freely suspended, balanced magnetic needle unaffected by local attraction.
Define the terms: i) Transiting ii) Face left condition iii) Face Right condition.
Answer
i) Transiting: The process of turning the telescope of a theodolite through 180 degrees in the vertical plane about its horizontal axis. ii) Face Left: The condition when the vertical circle of the theodolite is on the left side of the observer during an observation. iii) Face Right: The condition when the vertical circle is on the right side of the observer during an observation.
Define contour.
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List the fundamental lines of Dumpy Level.
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Write the various functions of total station.
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What is hydrographic surveying?
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What is the difference between tide and the wave?
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What is the purpose of collecting past wave data and current data for constructing offshore structures?
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What is the purpose of offshore structures?
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Write a short note on motions of submerged bodies.
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PART B
A 20 m chain was found to be 15 cm too long after chaining a distance of 1600 m. It was found to be 30 cm too long at the end of day’s work after chaining a total distance of 3200 m. Determine the correct distance if the chain was correct before the commencement of the work.
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Describe the procedure of measuring horizontal angles by reiteration and repetition methods.
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The following staff readings were taken with a level which was shifted after 4th, 7th and 10th readings: 1.235, 2.005, 1.875, 0.96, 0.38, 1.64, 2.84, 1.75, 1.93, 2.15, 2.37 and 2.46. Assuming the R.L of starting point as 100.00m, enter the readings in the form of a level book page and determine the rise and fall at all points.
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Explain any three different methods of contouring.
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What do you understand by Global Positioning System? Give an overview of GPS along with components of GPS.
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How bathymetry survey is done by sounding methods, explain in detail?
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Explain the generation of waves in a sea with neat sketches.
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Explain how positioning systems can visualize the ground surface profile?
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Explain the procedure for safety installation of jacket platform with help of neat diagrams.
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A wooden cylinder of length L and diameter L/2 is floating on water with its axis vertical. Find the metacentric height if the specific gravity of wood is 0.6.
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