SSC JE Exam - tachometric survey curve setting earthwork calculation advanced surveying equipment Online Test (MCQ Quiz)

1. What is the primary principle behind tachometry?

A) Triangulation B) Trilateration C) Stadia surveying D) Resection

2. In tacheometry, what is the instrument used to measure horizontal distances and elevations?

A) Theodolite B) Level C) Plane table D) Tacheometer

3. What are the two main methods of tacheometry?

A) Fixed Hair and Movable Hair B) Vertical Angle and Horizontal Angle C) Stadia and Subtense D) Wedge and Prism

4. Which tacheometric method uses a stadia diaphragm with fixed hairs?

A) Fixed Hair Method B) Movable Hair Method C) Subtense Method D) Electronic Tacheometry

5. In the Fixed Hair Method of tacheometry, the horizontal distance is calculated using the formula D = kS + C, where S is the stadia intercept. What does 'k' represent?

A) Multiplying constant B) Additive constant C) Vertical constant D) Instrument constant

6. What does the additive constant 'C' in the tacheometric distance formula (D = kS + C) typically account for?

A) The focal length of the object glass and the distance from the vertical axis to the vertical hair B) The height of the instrument C) The average stadia intercept D) The angle of inclination

7. The Movable Hair Method of tacheometry involves adjusting the distance between the upper and lower hairs on the diaphragm to directly read the distance. This method is generally:

A) More accurate but slower B) Less accurate but faster C) Equally accurate and fast D) Not used in modern surveying

8. What is the primary advantage of the Subtense Method in tacheometry?

A) Eliminates the need for vertical angle measurements B) Requires less precise vertical angle measurements C) Allows for direct reading of elevation D) Simplifies earthwork calculations

9. In tacheometry, when the line of sight is inclined, the horizontal distance (DH) and vertical difference in elevation (DV) are calculated using the observed vertical angle (α) and the stadia intercept (S). Which formula is correct for horizontal distance?

A) DH = kS cos²α B) DH = kS sin²α C) DH = kS tanα D) DH = kS cotα

10. For vertical difference in elevation (DV) when the line of sight is inclined upwards in tacheometry, the formula is DV = kS sinα cosα. This can be simplified to:

A) DV = (kS/2) sin(2α) B) DV = (kS/2) cos(2α) C) DV = kS sin(2α) D) DV = kS cos(2α)

11. When using tacheometry with an external focusing telescope and the vertical hair is on the vertical axis, the additive constant 'C' is generally taken as:

A) Zero B) Focal length of the object glass C) Distance from the object glass to the vertical axis D) Sum of focal length and distance from object glass to vertical axis

12. What is the main purpose of curve setting in surveying?

A) To establish points on a curved path B) To measure the area enclosed by a curve C) To calculate the volume of earthwork D) To determine the true north direction

13. Which type of curve is commonly used for horizontal transitions in roads and railways to connect two straight tangents smoothly?

A) Parabolic curve B) Circular curve C) Spiral curve D) Cubic curve

14. In setting out a simple circular curve, what is the 'Point of Intersection' (PI)?

A) The point where the curve begins B) The point where the curve ends C) The intersection of the two tangents D) The center of the curve

15. What does 'Tangent Length' (TL) of a simple circular curve represent?

A) The length of the chord connecting the beginning and end of the curve B) The distance from the Point of Curvature (PC) to the Point of Intersection (PI) C) The distance from the Point of Intersection (PI) to the Point of Tangency (PT) D) The length of the arc of the curve

16. The 'Long Chord' (LC) of a simple circular curve is the distance between:

A) The Point of Curvature (PC) and the Point of Intersection (PI) B) The Point of Intersection (PI) and the Point of Tangency (PT) C) The beginning and end of the curve D) The center of the curve and the PI

17. What is the 'Radius of Curvature' (R) in the context of curve setting?

A) Half the length of the long chord B) The radius of the circular arc C) The distance from the PI to the midpoint of the curve D) The tangent length

18. Which angle is crucial for calculating various elements of a simple circular curve, representing the total change in direction of the tangents?

A) Deflection Angle (Δ) B) Included Angle (I) C) Central Angle (θ) D) Intersection Angle (i)

19. What is the relationship between the Deflection Angle (Δ) and the Central Angle (θ) for a simple circular curve?

A) Δ = θ B) Δ = θ/2 C) Δ = 2θ D) Δ = θ²

20. The 'Versine' (v) of a circular curve is the maximum ordinate from the tangent to the curve. It is calculated as:

A) v = R (1 - cos(Δ/2)) B) v = R (1 - sin(Δ/2)) C) v = R (cos(Δ/2)) D) v = R (sin(Δ/2))

21. Which method of setting out a circular curve involves setting out chords of equal or varying lengths from the PC?

A) Rankine's Method B) Deflection Angle Method C) Tangent Method D) Linear Method

22. In the Deflection Angle Method, the deflection angle for each chord is calculated as:

A) Total Deflection Angle / Number of chords B) Total Deflection Angle * Number of chords C) Total Deflection Angle / 2 D) Total Deflection Angle

23. What is the primary purpose of earthwork calculations in surveying?

A) To determine the volume of material to be excavated or filled B) To measure the area of a land parcel C) To establish precise elevations D) To set out curves

24. Which method for earthwork calculation is suitable when the ground surface is irregular and consists of many irregular plots?

A) Trapezoidal Formula B) Prismoidal Formula C) Grid Method D) Average End Area Method

25. The 'Average End Area Method' for earthwork calculation assumes that the cross-sectional areas at the ends of a strip are:

A) Connected by a plane surface B) Connected by a parabolic surface C) Identical D) Zero

26. The formula for the Average End Area Method is V = A/2 * (A1 + A2), where A1 and A2 are the end areas and 'A' is the:

A) Length of the strip B) Width of the strip C) Depth of the cut D) Height of the fill

27. The 'Prismoidal Formula' is generally considered more accurate than the Average End Area Method because it assumes the solid is bounded by:

A) Two parallel end areas and a prismoidal mid-section B) A single end area C) A plane surface D) A parabolic surface

28. The Prismoidal Formula for volume is V = L/6 * (A1 + 4Am + A2), where L is the length, A1 and A2 are end areas, and Am is the:

A) Mid-section area B) Average area C) Maximum area D) Minimum area

29. In earthwork calculations, if the ground is sloping, the 'net area' is calculated by considering the difference between the formation level and the ground level at various points.

A) True B) False C) Depends on the slope D) Only applicable for fills

30. What is the purpose of 'curtate method' in earthwork calculation?

A) To calculate volumes in irregular areas with steep slopes B) To determine the area of a single plot C) To set out curves D) To measure horizontal distances

31. Which of the following is a common advanced surveying equipment?

A) Vernier Theodolite B) Prismatic Compass C) Total Station D) Abney Level

32. A 'Total Station' integrates an electronic theodolite with an electronic distance measurement (EDM) device and a microprocessor. Its primary advantage is:

A) Faster and more accurate data collection B) Manual recording of angles and distances C) Increased reliance on physical measurement D) Limited range of measurement

33. What does EDM stand for in the context of advanced surveying equipment?

A) Electronic Data Management B) Electronic Distance Measurement C) Engineering Design Module D) Earth Displacement Monitor

34. Global Navigation Satellite Systems (GNSS) like GPS are used in advanced surveying for:

A) Precise positioning and mapping B) Measuring angles only C) Establishing vertical control D) Setting out curves manually

35. A 'Laser Scanner' is an advanced surveying tool that captures detailed 3D information of a physical object or environment by using:

A) Laser light to measure points B) Sonic waves C) Infrared radiation D) Radio waves

36. What is 'Photogrammetry' in advanced surveying?

A) The science and art of obtaining reliable information about physical objects and the environment through the process of recording, measuring and interpreting photographic images B) The study of earthquakes C) The measurement of atmospheric pressure D) The analysis of soil composition

37. Which technology allows for the creation of highly accurate digital elevation models (DEMs) from aerial or satellite imagery?

A) LiDAR B) Ground Penetrating Radar C) Sonar D) Radar Interferometry

38. In tacheometry, if the horizontal staff reading is 1.500 m and the vertical angle is +5°00', and the multiplying constant k=100, C=0, what is the horizontal distance?

A) 150.00 m B) 149.00 m C) 151.00 m D) 148.50 m

39. Using the same tacheometric data as above (S=1.500 m, α=+5°00', k=100, C=0), what is the vertical difference in elevation?

A) 12.95 m B) 13.05 m C) 12.85 m D) 13.15 m

40. For a simple circular curve with a radius of 200m and a deflection angle of 60°, what is the tangent length?

A) 200.00 m B) 217.67 m C) 115.47 m D) 230.94 m

41. With the same curve parameters (R=200m, Δ=60°), what is the length of the long chord?

A) 200.00 m B) 217.67 m C) 115.47 m D) 230.94 m

42. If the cross-sectional area of a railway cutting at one end is 150 m² and at the other end is 200 m², and the length of the section is 100m, what is the volume using the Average End Area Method?

A) 17500 m³ B) 35000 m³ C) 1750 m³ D) 3500 m³

43. Using the Prismoidal Formula for the same cutting section (A1=150 m², A2=200 m², L=100m), and assuming a mid-section area (Am) of 170 m², what is the volume?

A) 17500 m³ B) 17666.67 m³ C) 17000 m³ D) 17800 m³

44. What is the main difference between a Total Station and a traditional theodolite with an EDM?

A) Total Station has integrated data storage and processing capabilities B) Total Station only measures angles C) Traditional theodolite has better accuracy D) Total Station requires manual calculation of all data

45. Which advanced surveying technique is particularly useful for mapping dense urban environments or complex geological formations?

A) LiDAR B) Plane table surveying C) Simple leveling D) Chain surveying

46. In tacheometry, the accuracy of distance measurement is generally:

A) Lower than direct taping B) Higher than direct taping C) Equal to direct taping D) Dependent on atmospheric conditions only

47. What is the primary application of tacheometry in modern surveying?

A) Topographic mapping and contouring B) Precise boundary surveys C) Setting out very long straight lines D) Measuring small areas accurately

48. Which term describes the process of determining the position of points on a contour map based on tacheometric readings?

A) Interpolation B) Extrapolation C) Triangulation D) Resection

49. What is a key consideration when setting out a compound curve compared to a simple circular curve?

A) The need to consider the transition between curves of different radii B) The absence of a single deflection angle C) The requirement for a constant radius D) Simpler calculation of tangent lengths

tachometric survey curve setting earthwork calculation advanced surveying equipment - Online Test

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