MCQOPTIONS
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MCQOPTIONS
This section includes 51 Mcqs, each offering curated multiple-choice questions to sharpen your Surveying knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Finding the elevations of a point with respect to a given or assumed and establish points given elevation or at different elevations with respect to given or assumed dactum is ________ |
| A. | Surveying |
| B. | Levelling |
| C. | Bearing |
| D. | Contouring |
| Answer» C. Bearing | |
| 2. |
Determining the relative positions of points on above or beneath the surface of the earth by means of direct or indirect measurements of distance and direction and elevation is called as _________ |
| A. | Surveying |
| B. | Levelling |
| C. | Measuring |
| D. | Contouring |
| Answer» B. Levelling | |
| 3. |
At a given point, the atmospheric pressure doesn’t remain constant in the course of the day, even in the course of an hour. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
A staff is held at a distance of 1000 m from a level. If the reading on the staff is 1.565 m, the reading corrected for curvature is |
| A. | 1.487 m |
| B. | 1.498 m |
| C. | 1.632 m |
| D. | 1.644 m |
| Answer» B. 1.498 m | |
| 5. |
How high should a helicopter pilot rise at a point A just to see the horizon at point B, if the distance AB is 40 km? |
| A. | 101.75 m |
| B. | 110.50 m |
| C. | 107.75 m |
| D. | 105.50 m |
| Answer» D. 105.50 m | |
| 6. |
A relatively fixed point of known elevation above datum is called ___________. |
| A. | bench mark |
| B. | datum point |
| C. | reduced level |
| D. | reference point |
| Answer» B. datum point | |
| 7. |
In reciprocal levelling, the error which is not completely eliminated, is due to: |
| A. | Non-adjustment of line of collimation |
| B. | Refraction |
| C. | Earth's curvature |
| D. | Non-adjustment of the bubble tube |
| Answer» C. Earth's curvature | |
| 8. |
How high should a helicopter pilot rise at point A just to see the horizon at point B, if the distance AB is 40 km? |
| A. | 101.75 m |
| B. | 110.50 m |
| C. | 107.68 m |
| D. | 105.50 m |
| Answer» D. 105.50 m | |
| 9. |
Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 in 10, the sight on the down-slope, must be less than________m. |
| A. | 15 |
| B. | 20 |
| C. | 25 |
| D. | 30 |
| Answer» D. 30 | |
| 10. |
During levelling operations, if the back sight is more than the fore sight, then it indicates that |
| A. | The forward staff is at lower point |
| B. | The back staff is lower point |
| C. | The difference in level cannot be ascertained |
| D. | None of the above |
| Answer» C. The difference in level cannot be ascertained | |
| 11. |
In the given image, Read the observation carefully which were taken during the testing of a dumpy level.To what reading should the line of collimation be adjusted when the instrument was at Q? |
| A. | 1.146 m |
| B. | 0.946 m |
| C. | 1.246 m |
| D. | 0.786 m |
| Answer» B. 0.946 m | |
| 12. |
Consider the following statements:In levelling operationA. When the instrument is being shifted, the staff must not be moved.B. When the staff is being carried forward, the instrument must remain stationary.Which of the above statements is / are correct ?Select the code for the correct answer from the options given below: |
| A. | A only |
| B. | B only |
| C. | Both A and B |
| D. | Neither A nor B |
| Answer» D. Neither A nor B | |
| 13. |
How much refraction correction (in m) is required for a distance of 500 m? |
| A. | 0.0028 |
| B. | 0.0056 |
| C. | 5.61 |
| D. | 2850 |
| Answer» B. 0.0056 | |
| 14. |
Hypsometry is a method of |
| A. | surveying of water bodies |
| B. | determining elevations based on the boiling point of liquids |
| C. | determining elevations based on the atmospheric pressure |
| D. | finding temperatures at different heights |
| Answer» C. determining elevations based on the atmospheric pressure | |
| 15. |
If the Reduced Level (R.L.) and Bench Mark (B.M.) is 100·00 m, the back sight is 1·215 m and the foresight is 1·870 m, then R.L. of the forward station is |
| A. | 99.345 m |
| B. | 100.345 m |
| C. | 100.655 m |
| D. | 101.87 m |
| Answer» B. 100.345 m | |
| 16. |
A line of levels has been run from a bench mark of elevation +125.42 m and ends at another bench mark of elevation +125.45 m. The sum of back sights is 17.58 m and the sum of foresights is 17.61 m. The closing error in the survey work is: |
| A. | -0.06 m |
| B. | 0.03 m |
| C. | -0.03 m |
| D. | 0.06 m |
| Answer» E. | |
| 17. |
In levelling between two points A and B on the opposite sides of a river, the level was first set up near A and the staff readings on A and B were 2.645 m and 2.30 m respectively. The level was then moved near B and set up; the respective staff readings then were 1.085 m and 1.665 m on A and B respectively. What is the true difference of level between A and B? |
| A. | A and B are at same level |
| B. | A is 0.5825 m below B |
| C. | A is 0.4625 m below B |
| D. | B is 0.5825 m below A |
| Answer» D. B is 0.5825 m below A | |
| 18. |
If backsight and foresight distances are balanced1. The difference in elevation between two points can be directly calculated by taking difference of the two readings.2. No correction for the inclination of the line of sight is necessary |
| A. | 1 only |
| B. | 2 only |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» D. Neither 1 nor 2 | |
| 19. |
If the true difference of level between two points is required, the level must be set up |
| A. | at any one of the two points |
| B. | at a third from where both the points are visible |
| C. | exactly midway between the points |
| D. | All of the above |
| Answer» D. All of the above | |
| 20. |
Choose the correct option from among the following with respect to the given statements.Statement (i): The effect of the curvature of the earth is to cause an object to appear lower.Statement (ii): The effect of refraction is to cause an object to appear higher. |
| A. | Only (i) is correct |
| B. | Both (i) and (ii) are correct |
| C. | Only (ii) is correct |
| D. | (i) is correct and (ii) is incorrect |
| Answer» C. Only (ii) is correct | |
| 21. |
Radius of visible horizon from top of a 134 m light house will be: _______. |
| A. | 44.62 km |
| B. | 54.5 km |
| C. | 87.44 km |
| D. | 89.67 km |
| Answer» B. 54.5 km | |
| 22. |
If R is the radius of the earth and h is the altitude above mean sea level at a location then the correction for length L for reduction to mean sea level is: |
| A. | \({h \over R}*L\) |
| B. | h*L*R |
| C. | \({R \over h}*L\) |
| D. | \({h \over L}*R\) |
| Answer» B. h*L*R | |
| 23. |
In which of the following levels, the telescope is supported by rigid sockets at the either ends? |
| A. | Dumpy level |
| B. | Wye level |
| C. | Reversible level |
| D. | Titling levels |
| Answer» D. Titling levels | |
| 24. |
An error due to the earth’s curvature and refraction is to be corrected using: |
| A. | C = 0.0136 D2 |
| B. | C = 0.0673 D2 |
| C. | C = 0.0785 D2 |
| D. | C = 0.0112D2 |
| Answer» C. C = 0.0785 D2 | |
| 25. |
In levelling, which of the following is an advantage of the rise and fall method over the height of instrument method? |
| A. | It is relatively rapid |
| B. | No backsight is required at change points |
| C. | Check on the calculations for intermediate sights are done |
| D. | No benchmark is required to calculate the Reduced level of each point |
| Answer» D. No benchmark is required to calculate the Reduced level of each point | |
| 26. |
Consider the following:(i) Line ranger(ii) Reciprocal Ranging(iii) Random line ranging(iv) Optical squareWhich of these are employed to solve the problem of vision obstructed but chaining free? |
| A. | (i), (ii), (iii) and (iv) |
| B. | (ii) and (iii) only |
| C. | (ii) and (iv) only |
| D. | (iii) and (iv) only |
| Answer» C. (ii) and (iv) only | |
| 27. |
A theodolite was set up at P and the angle of elevation to the top of a mobile tower ST was 300 .The staff reading held at a station of RL 110 was 2.555 m, the telescope being horizontal. The horizontal distance between the foot of the tower and the Instrument station is 810 m. The RL of the top of the tower is |
| A. | 578.25 m |
| B. | 579.50 m |
| C. | 580.25 m |
| D. | 582.40 m |
| Answer» D. 582.40 m | |
| 28. |
A backsight (BS) reading taken by a level instrument set at station A on a bench mark (RL = 210.852) is 2.325 m, and foresight (FS) at a station is measured as 1.835 m. What will be the reduced level (RL) of the station A? |
| A. | 211.654 m |
| B. | 211.342 m |
| C. | 210.842 m |
| D. | 210.362 m |
| Answer» D. 210.362 m | |
| 29. |
If the back sight and fore sight distance are kept equal during levelling observation, then the effect of both refraction and earth’s curvature will be __________. |
| A. | Zero |
| B. | 0.06735 d2 meters |
| C. | \(\frac 2 3 d^2\) meters |
| D. | 0.057 d2 meters |
| Answer» B. 0.06735 d2 meters | |
| 30. |
In a levelling survey, the summation of all back sights and the summation of all foresights are 7.475 m and 7.395 m, respectively. The reduced level of the initial benchmark is 100.000 m. The reduced level of the last point where the staff is held will be |
| A. | 100.000 m |
| B. | 100.080 m |
| C. | 107.395 m |
| D. | 107.475 m |
| Answer» C. 107.395 m | |
| 31. |
Height of collimation method is ______ and ______ labour is required as compared to Rise and fall method. |
| A. | rapid, more |
| B. | rapid, less |
| C. | slow, less |
| D. | slow, more |
| Answer» C. slow, less | |
| 32. |
If the correction for curvature for a measured distance of 1200 m is 0.14 m, the correction for refraction (in m) will be |
| A. | 0.020 |
| B. | 0.202 |
| C. | 8.571 |
| D. | 0.117 |
| E. | 0.017 |
| Answer» B. 0.202 | |
| 33. |
R.L. of point ‘A’ is 50 m and R.L. of point ‘B’ is 46.655 m. The distance between AB is 150 m. The gradient of line AB is |
| A. | 1 in 67.26 (Rising) |
| B. | 1 in 44.84 (Falling) |
| C. | 1 in 30.00 (Rising) |
| D. | 1 in 30.00 (Falling) |
| Answer» C. 1 in 30.00 (Rising) | |
| 34. |
A levelling work was carried out along a falling gradient using a dumpy level and a levelling staff of 3 m length. The following successive readings were taken: 1.155, 2.74, 0.75, 1.79 m. What is the correct order of booking the four readings in the field book? (BS: back sight, FS : fore sight, IS : intermediate sight) |
| A. | BS, IS, BS, FS |
| B. | BS, FS, IS, FS |
| C. | BS, IS, FS, BS |
| D. | BS, FS, BS, FS |
| Answer» E. | |
| 35. |
If the R.L of a B.M is 50 m, the back sight is 1.25 and foresight is 1.85, then what will be the R.L of the forward station? (in 'm') |
| A. | 46.9 |
| B. | 49.4 |
| C. | 50.6 |
| D. | 53.1 |
| Answer» C. 50.6 | |
| 36. |
If the bearing of the line AB is measured from B towards A, it is known as______ bearing. |
| A. | fore |
| B. | magnetic |
| C. | back |
| D. | toll |
| Answer» D. toll | |
| 37. |
If the reduced level of a benchmark is 101.00 m. The back sight reading is 1.215 m and the fore sight is 1.810 m, the reduced level of the forward station is- |
| A. | 100.405 m |
| B. | 104.025 m |
| C. | 104.305 m |
| D. | 99.605 m |
| Answer» B. 104.025 m | |
| 38. |
A level, when set up 25 m from peg A and 50 m from peg B, reads 2.853 m on a staff held on A and 4.462 m on a staff held on B, keeping the bubble at its centre while reading. If the reduced levels of A and B are 283.665 m and 285.295m respectively, what is the collimation error per 100.0 m? |
| A. | 0.015 m |
| B. | 0.084 m |
| C. | 0.045 m |
| D. | 0.060 m |
| Answer» C. 0.045 m | |
| 39. |
A relatively fixed point of known elevation is called |
| A. | Bench mark |
| B. | Datum point |
| C. | Reduced level |
| D. | Reference point |
| Answer» B. Datum point | |
| 40. |
If ‘k’ is the total distance of the level line in km, then the permissible error in the first order precise leveling is: |
| A. | \(\pm \ 8\sqrt{k} \ mm\) |
| B. | \(\pm \ 4k \ mm\) |
| C. | \(\pm \ 4\sqrt{k} \ mm\) |
| D. | \(\pm \ 8 k \ mm\) |
| Answer» D. \(\pm \ 8 k \ mm\) | |
| 41. |
In an instrument, the bubble tube with divisions of 1 mm and a radius of 0.9 m has the sensitivity of: |
| A. | 1/2 |
| B. | 1/70 |
| C. | 1/90 |
| D. | 1/900 |
| Answer» E. | |
| 42. |
A level instrument at a height of 1.320 m has been placed at a station having a Reduced Level (RL) of 112.565 m. The instrument reads -2.835 m on a levelling staff held at the bottom of a bridge deck. The RL (in m) of the bottom of the bridge deck is |
| A. | 116.720 |
| B. | 116.080 |
| C. | 114.080 |
| D. | 111.050 |
| Answer» B. 116.080 | |
| 43. |
Finding the elevations of a point with respect to a given or assumed and establish points given elevation or at different elevations with respect to given or assumed dactum is _______? |
| A. | Surveying |
| B. | Levelling |
| C. | Bearing |
| D. | Contouring |
| Answer» C. Bearing | |
| 44. |
Determining the relative positions of points on above or beneath the surface of the earth by means of direct or indirect measurements of distance and direction and elevation is called as ________? |
| A. | Surveying |
| B. | Levelling |
| C. | Measuring |
| D. | Contouring |
| Answer» B. Levelling | |
| 45. |
Which branch of surveying is used to find the elevations of given points with respect to given or assumed datum? |
| A. | Levelling |
| B. | Contouring |
| C. | Traversing |
| D. | Plane table surveying |
| Answer» B. Contouring | |
| 46. |
Which of the following methods of levelling is a modified form of stadia levelling? |
| A. | Barometric levelling |
| B. | Trigonometric levelling |
| C. | Spirit levelling |
| D. | Traversing |
| Answer» C. Spirit levelling | |
| 47. |
Which process of levelling in which the elevations of points are computed from the vertical angles and horizontal distances measured in the field? |
| A. | Barometric levelling |
| B. | Trigonometric levelling |
| C. | Spirit levelling |
| D. | Traverse levelling |
| Answer» C. Spirit levelling | |
| 48. |
At a given point, the atmospheric pressure doesn’t remain constant in the course of the day, even in the course of an hour.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 49. |
Which of the following methods of levelling makes use of the phenomenon that difference in elevation between two points is proportional to the difference in atmospheric pressures at these points? |
| A. | Barometric levelling |
| B. | Trigonometric levelling |
| C. | Spirit levelling |
| D. | Traverse levelling |
| Answer» B. Trigonometric levelling | |
| 50. |
Which of the following is not a method of levelling? |
| A. | Barometric levelling |
| B. | Trigonometric levelling |
| C. | Spirit levelling |
| D. | Traverse levelling |
| Answer» E. | |