Surveying and Geomatics Exam Prep
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Surveying and Geomatics Exam Prep
English 21 leveled MCQs Free
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10 marks Long answer
Explain different type of surveying in detail.
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Different types of surveying include land surveying, hydrographic surveying, and engineering surveying, each serving specific purposes and methodologies.
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10 marks Long answer
Explain reciprocal levelling in detail with a diagram and mathematical derivation.
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Reciprocal leveling involves taking readings from two points to eliminate errors; it requires a diagram and derivation of the formula for accurate height determination.
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10 marks Long answer
Write down the definition (i) Latitude (ii) Departure (iii) Reduce level (iv) Bowditch's rule (v) Transit rule (vi) fore sight and back sight (vii) transiting (viii) Swinging the telescope (ix) vertical axis (x) temporary adjustment.
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Definitions include Latitude: angular distance north/south of the equator; Departure: east/west distance from a meridian; Reduce level: height above a datum; Bowditch's rule: method for adjusting traverse; Transit rule: method for calculating angles; Fore sight: reading taken on a point; Back sight: reading taken on a…
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10 marks Long answer
Explain in detail the plane table surveying with three different methods.
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Plane table surveying involves direct plotting of points; methods include the intersection method, radiation method, and traversing method.
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10 marks Long answer
The following staff readings were observed successively with a level the instrument is moved by third sixth and eighth readings 2.228: 1.606: 0.988: 2.090: 2.864: 1.262: 0.602: 1.982: 1.044: 2.684 m enter the reading in record book and calculate R.L. if the first reading was taken at a B.M of 432.383 m.
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Calculate the reduced levels using the given staff readings and the benchmark provided.
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10 marks Long answer
Explain the methods of locating contours.
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Methods of locating contours include the direct method, indirect method, and the use of contour maps.
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10 marks Long answer
Derive the expression for determining the elevation of an object when its base is inaccessible, instrument stations and the elevated object are not in the same vertical plane.
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Derive the elevation expression using trigonometric relationships and the principles of surveying.
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4 marks Medium answer
Discuss the different sources of errors in surveying with examples.
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Sources of errors in surveying include instrumental errors (e.g., faulty instruments), observational errors (e.g., human mistakes), and environmental errors (e.g., temperature variations).
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4 marks Medium answer
Discuss the different methods for calculating area.
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Methods for calculating area include the trapezoidal rule, Simpson's rule, and grid method.
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4 marks Medium answer
What is contour, write down the characteristics and use of contour line?
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A contour is a line on a map connecting points of equal elevation; characteristics include spacing indicating slope, and uses include terrain representation.
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4 marks Medium answer
Discuss the causes of curvature and refraction in leveling and state their combined correction.
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Curvature is caused by the earth's shape, while refraction occurs due to atmospheric conditions; combined correction accounts for both effects in leveling.
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4 marks Medium answer
Explain different types of leveling.
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Types of leveling include differential leveling, barometric leveling, and trigonometric leveling.
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4 marks Medium answer
What do mean by triangulation. Write down its objectives and also discuss the types of triangulation?
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Triangulation is a surveying method using triangles to determine distances; objectives include accurate location determination and types include primary and secondary triangulation.
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4 marks Medium answer
Describe the temporary adjustments of a theodolite in sequence.
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Temporary adjustments of a theodolite include leveling the instrument, centering over the point, and aligning the telescope.
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2 marks Short answer
What is the second principle of surveying?
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The second principle of surveying states that the position of any point on the earth's surface can be determined by measuring distances and angles from known points.
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2 marks Short answer
What is a difference between plane surveying and geodetic surveying?
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Plane surveying assumes the earth is flat, while geodetic surveying accounts for the curvature of the earth.
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2 marks Short answer
What is the difference between a plan and a map?
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A plan is a detailed drawing to scale of a small area, while a map represents a larger area with less detail.
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2 marks Short answer
What is magnetic declination?
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Magnetic declination is the angle between magnetic north and true north.
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2 marks Short answer
State Simpson’s Rule for area calculation and its main condition.
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Simpson’s Rule states that the area under a curve can be approximated using parabolic segments, applicable when the number of intervals is even.
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2 marks Short answer
Write down the objectives of levelling.
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The objectives of levelling include determining the relative heights of points, establishing a horizontal line, and creating a level surface.
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2 marks Short answer
Write down the different purpose for which the theodolite can be used.
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Theodolites are used for measuring horizontal and vertical angles, surveying, and setting out right angles.
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