Category: Surveying Objective Questions

Surveying Multiple Choice Questions on “Photogrammetric Surveying – Tilt Distortion or Displacement”.

1. From the figure, X indicates________

a) Tilted photograph
b) Vertical photograph
c) Oblique photograph
d) Terminated photograph
Answer: a
Clarification: X indicates the tilted photograph. When vertical photograph is placed on a tilted photograph, it can be visualized as shown. This is done to mitigate the errors while correcting the observations taken from the photographs.

2. Determine the tilt displacement if the values of point of rotation and a are 3 and 4m having tilt angle 43˚23ꞌ with focal length 4m.
a) 4.72m
b) 42.72m
c) 24.27m
d) 24.72m
Answer: d
Clarification: The tilt displacement is given as
d = (i*a)²*sin t / f. On substitution, we get
d = (3*4)²*sin 43˚23ꞌ / 4
d = 24.72m.

3. Distance from isocentre is taken into consideration in tilt displacement.
a) False
b) True
Answer: b
Clarification: Tilt displacement or distortion can be defined as the difference of a point in a tilted photograph from isocentre to distance of the same point in a photograph from isocentre. It clearly explains that the distance of the point is measured from isocentre.

4. Relief distortion depends on which of the following?
a) Zenith
b) Flying height
c) Datum
d) Focal length
Answer: b
Clarification: Relief displacement is a point on tilted photograph, which can be placed above nadir point. It depends upon flying height, distance of image from nadir point, elevation from ground and the position of that point from principle line. It can be applied in case of vertical photograph too.

5. The formula for tilt displacement can be given as ___________
a) d = (i+a)²*sin t / f
b) d = (i-a)²*sin t / f
c) d = (i*a)²*sin t / f
d) d = (i*a)²*sin t + f
Answer: c
Clarification: The formula of tilt displacement involves sine of the tilt angle along with focal length of the lens, point of rotation and the displacement point. The entire representation can be done as
d = (i*a)²*sin t / f.

6. The formula of relief displacement can be given as __________
a) d = r*h / H
b) d = r+h / H
c) d = r*h * H
d) d = r-h / H
Answer: a
Clarification: Relief displacement involves the usage of radial distance from nadir point, height from mean sea level, height of the station point. The entire mathematical expression can be described as follows
d = r*h / H.

7. What is the position of relief displacement on vertical photograph?
a) Horizontal
b) Parallel
c) Perpendicular
d) Radial
Answer: d
Clarification: In a vertical photograph, the relief displacement is radial. It is able to connect all the points which are sighted afterwards for better result. In case of tilted photograph, it is not radial.

8. Flying height is used in case of tilted photograph.
a) False
b) True
Answer: b
Clarification: Flying height involves in the placing of a point on the horizon. For placing this nadir point is used as a reference. In general tilted photograph depends on flying height, elevation of the ground point.

9. Tilt displacement of a point on nadir point is _________
a) Half inward
b) Completely outward
c) Half outward
d) Completely inward
Answer: c
Clarification: The tilt displacement of a point on the downward or nadir point is half outward but not full. But in case of the point upward of a half tilted photograph is full inward.

10. Determine the relief displacement if the radial distance is given as 45m with a height from mean sea level and height of the station is given as 2m and 76m respectively.
a) 1.18m
b) 1.81m
c) 9.18m
d) 10.18m
Answer: a
Clarification: The relief displacement can be found out by using the formula,
d = r*h / H. On substitution, we get
d = 45*2 / 76
d = 1.18m.

Surveying Multiple Choice Questions on “Topographic Maps – CIM Series”.

1. Which of the following indicates the correct set for the division of map numbering?
a) CIM, IAC series
b) CIM, IAF
c) IAC, CIA
d) IAF, IAC
Answer: a
Clarification: Map numbering denotes the type of system adopted for designating the scale on map. It depends on the accuracy of the work and the precise levels of the output. Most probably small scale must be preferred for obtaining good details. It consists of CIM series and IAC series of map numbering.

2. The CIM series can be used in __________ scale.
a) 1:2,50,000
b) 1:50,000
c) 1:25,000
d) 1:10⁶
Answer: d
Clarification: The international system, CIM, can be used in case of international maps which having a large scale number. It might decrease the accuracy in output, but it is the best and most commonly used method, which consumes less time.

3. Which of the following processes is involved in CIM series?
a) Decoupled integration
b) Integration
c) Decoupled differentiation
d) Differentiation
Answer: a
Clarification: CIM series involves decoupled integration which consists of series of the objective. The CIM data modeling can be done with the help of decoupled integration.

4. Which of the following is the right expansion of CIM?
a) Commerce Information Model
b) Common Information Model
c) Common Informational Modem
d) Common Information Modem
Answer: b
Clarification: CIM can be elaborated as Common Information Model is a standard developed in North America with an objective of exchanging information among the power systems and among the utilities.

5. Which of the following is used in CIM?
a) STAAD Pro
b) Remote sensing
c) GIS
d) Revit
Answer: c
Clarification: CIM uses network operations like GIS and OMS, which can transmit the network where ever possible. It can also provide asset tracking, work scheduling and customer billing.

6. What is the common language interpreted in the CIM system?
a) Spanish
b) French
c) Italian
d) English
Answer: d
Clarification: CIM can use our common language in the inter system communication. Since the CIM is based on integration, it can have the capability to understand the input which is given by the user and can show the output based on the interest.

7. CIM was adopted by which of the following commissions?
a) ICE
b) IEI
c) ICI
d) IEC
Answer: d
Clarification: CIM is basically approved by the electric power research institute which is having a more amount of electrical work involved in it, because of this the IEC approved it and the usage of this has become one of the most used products in GIS.

8. Which of the following is not one of the software’s of GIS?
a) Arc GIS
b) RS GIS
c) Q GIS
d) Super GIS
Answer: b
Clarification: GIS involves different varieties of software’s. These are developed based on different topological variations and are able to solve those in a quick manner. Those include Arc GIS, Q GIS, and Super GIS etc.

9. ESB integration model is developed based on __________
a) CIM series
b) GIS
c) Remote sensing
d) Arc GIS
Answer: a
Clarification: CIM data modeling involves in decoupled integration which is used in the development of the ESB model with the help of GIS. GIS can control over ESB at the time of integration.

10. Swiss Alps farming can be monitored by using ________
a) Revit
b) Remote sensing
c) GIS
d) Auto CAD
Answer: c
Clarification: The cultivation of land on a slope region in Swiss Alps can be detected by using GIS software because direct manual interpretation can’t be done so easily because of the climatic conditions present in that particular area and it is critical for successful crop growth.

Surveying Multiple Choice Questions on “Project Survey – Docks, Harbours and Port”.

1. Which of the following can be considered as inland water transportation?
a) Transportation by river
b) Transportation by culvert
c) Transportation on bridge
d) Transportation by barrage
Answer: a
Clarification: Inland transportation includes transportation by river or canal, which is considered only for human transportation. In case of ocean transportation, trade and commerce will be conducted with high flexibility.

2. Which of the following can act as an advantage of water transportation?
a) Tides
b) Less development
c) Costly mode of transportation
d) Cheap mode of transportation
Answer: d
Clarification: There are many advantages while considering water transportation. Some of those include the provision of defense, cheap mode of transportation, high load carrying capacity, overall development etc.

3. Goods can be transported within less time.
a) True
b) False
Answer: b
Clarification: Though it is the cheapest mode of transportation, it is more time consuming process. Its slow operation makes it a time consuming travel and it can lead to accidents in case of storms.

4. A basin which can protect water well from the actions of wind and waves can be designated as___________
a) Quarry
b) Basin
c) Harbor
d) Port
Answer: c
Clarification: Harbor can be defined as the basin which can protect water well from the actions of wind and waves. This can be along the sea-shore, river estuary, lake or canal, which is connected to the sea shore.

5. Which of the following is considered in case stable floating condition of ship?
a) Vertical measurement
b) Horizontal measurement
c) Linear measurement
d) Draft
Answer: d
Clarification: For having stability in case of floating a ship in the water, a vertical linear draft is considered. This is immersed in the water surface along with the ship for improving the stability.

6. Which of the following is used as a basis for the classification of harbor?
a) Protection
b) Placement
c) Area
d) Climatic condition
Answer: a
Clarification: Harbor can be classified based on the protection, utility and the location. Based on the condition of the area present, the harbor must be constructed. It must be able to adapt to the situations and withstand for a longer period.

7. Which of the following will not come under the category of harbor classification?
a) Natural harbor
b) Semi artificial harbor
c) Artificial harbor
d) Semi natural harbor
Answer: b
Clarification: Under the protection basis, harbor has been classified into 3 types. Those include the natural harbor, semi natural harbor and artificial harbor. These are adopted based on the placement of the sea coast.

8. Bombay harbor will come under the classification of ____________
a) Semi natural harbor
b) Artificial harbor
c) Natural harbor
d) Semi artificial harbor
Answer: c
Clarification: Natural harbor is having a protected inlet from storms and waves, developed by natural land. It can afford safe discharge facility for a ship on sea coast in the form of creek and basins.

9. On what basis a harbor can be designated as natural roadstead?
a) Semi artificial harbor
b) Artificial harbor
c) Navigable channel
d) Semi natural harbor
Answer: d
Clarification: The presence of navigable channel with a protective natural bank towards seaward can make a harbor as natural roadstead. These are having naturally developed structures rather than manmade structures.

10. Which of the following harbor areas are having artificial protection?
a) Vishakhapatnam port
b) Mumbai port
c) Kakinada port
d) Yanam port
Answer: a
Clarification: The provision of artificial protection at the entrance is made to the Vishakhapatnam port because it is having protection only on the sides and having more chances of being affected to winds.

Surveying Multiple Choice Questions on “Surveyor’s Compass”.

1. Surveyor’s compass is instrument for measuring angles.
a) True
b) False
Answer: b
Clarification: Surveyor’s compass is an instrument for the direct measurement of direction. Instruments for measurement of angles are sextant and theodolite.

2. Which of the following is not the most convenient and portable instrument for direct measurement of directions?
a) Prismatic compass
b) Surveyor’s compass
c) Theodolite
d) Sextant
Answer: b
Clarification: Surveyor’s compass is the not most convenient and portable form of magnetic compass. Prismatic compass can be used as a hand instrument or can be fitted on a tripod also.

3. Which of the following is a part of surveyor’s compass?
a) Agate cap
b) Prism cap
c) Brake pin
d) Jewel bearing
Answer: d
Clarification: Prism cap, prism, brake pin, spring brake, pivot, agate cap etc are parts of the prismatic compass. Jewel bearing is one of the part of surveyor’s compass.

4. In surveyor’s compass needle is of edge bar type.
a) True
b) False
Answer: a
Clarification: Edge bar type of needle is in surveyor’s compass. The needle is of broad needle type and needle doesn’t act as an index in case of a prismatic compass.

5. In which of the following compass needle acts as an index?
a) Prismatic compass
b) Surveyor’s compass
c) Theodolite
d) Sextant
Answer: b
Clarification: In case of surveyors compass needle acts as an index. In the case of a prismatic compass needle doesn’t acts as index.

6. In which of the following compass graduated card is attached to the box and not to the ring?
a) Prismatic compass
b) Surveyor’s compass
c) Theodolite
d) Sextant
Answer: b
Clarification: The graduated card ring is attached with the needle in case of a prismatic compass. In case of surveyor’s compass, the graduated card is attached to the box and not to the needle.

7. Which of the following instruments cannot be used without a tripod?
a) Prismatic compass
b) Surveyor’s compass
c) Theodolite
d) Sextant
Answer: b
Clarification: Surveyor’s compass cannot be used without a tripod. Prismatic compass can be used with or without a tripod.

8. In surveyor’s compass, graduations are in a Q.B system.
a) True
b) False
Answer: a
Clarification: In Surveyor’s compass, the graduations are in a Q.B system, having 0° at north and south and 90° at east and west. East and West are interchanged.

9. In which of the following compass graduations are engraved erect?
a) Prismatic compass
b) Surveyor’s compass
c) Theodolite
d) Sextant
Answer: a
Clarification: In case of surveyor’s compass graduations are engraved erect. Prismatic compass graduations are engraved inverted.

10. In which of the following compass sighting and reading taking cannot be done simultaneously from one position of the observer?
a) Prismatic compass
b) Surveyor’s compass
c) Theodolite
d) Sextant
Answer: b
Clarification: In case of surveyor’s compass, reading is taken by directly seeing through the top of the glass. Sighting and reading taking cannot be done simultaneously from one position of the observer.

Surveying Problems on “Levelling – Degree of Precision”.

1. The degree of precision does not depend upon the type of instrument.
a) true
b) false
Answer: b
Clarification: The degree of precision depends upon the type of instrument, skill of observer, character of country, atmospheric conditions.

2. For a given instrument and atmospheric conditions, the precision depends upon the number of setups.
a) true
b) false
Answer: a
Clarification: For a given instrument and atmospheric conditions, the precision depends upon the number of setups and also upon the length of sights.

3. The precision on plains will be less than that on hills.
a) true
b) false
Answer: b
Clarification: For a given instrument and atmospheric conditions, the precision depends upon the number of setups and also upon the length of sights. Thus, the precision on plains will be less than that on hills.

4. The degree of precision depends upon the skill of an observer.
a) true
b) false
Answer: a
Clarification: The degree of precision depends upon the type of instrument, skill of observer, character of country, atmospheric conditions.

5. What is the error in feet for rough levelling for reconnaissance or preliminary surveys?
a) 0.4×√M
b) 0.1×√M
c) 0.05×√M
d) 0.017×√M
Answer: a
Clarification: According to Indian standards error in feet for rough levelling for reconnaissance or preliminary surveys is given as 0.4×√M.

6. What is the error in feet for ordinary levelling for location and construction surveys?
a) 0.4×√M
b) 0.1×√M
c) 0.05×√M
d) 0.017×√M
Answer: b
Clarification: According to Indian standards the error in feet for ordinary levelling for location and construction surveys is given as 0.1×√M.

7. What is the error in feet for accurate levelling for principal benchmarks or for extensive surveys?
a) 0.4×√M
b) 0.1×√M
c) 0.05×√M
d) 0.017×√M
Answer: c
Clarification: According to Indian standards, the error in feet for accurate levelling for principal benchmarks or for extensive surveys is given as 0.05×√M.

8. What is the error in feet for precise levelling for benchmarks of widely distributed points?
a) 0.4×√M
b) 0.1×√M
c) 0.05×√M
d) 0.017×√M
Answer: d
Clarification: According to Indian standards, the error in feet for precise levelling for benchmarks of widely distributed points is given as 0.017×√M.

9. What is the error in mm for rough levelling for reconnaissance or preliminary surveys?
a) 100 × √K
b) 24 × √K
c) 12.0 × √K
d) 4 × √K
Answer: a
Clarification: According to Indian standards, error in mm for rough levelling for reconnaissance or preliminary surveys is given as 100×√K.

10. What is the error in mm for ordinary levelling for location and construction surveys?
a) 100×√K
b) 24×√K
c) 12.0×√K
d) 4×√K
Answer: b
Clarification: According to Indian standards, error in mm for ordinary levelling for location and construction surveys is given as 24×√K.

11. What is the error in mm for accurate levelling for principal benchmarks or for extensive surveys?
a) 100×√K
b) 24×√K
c) 12.0×√K
d) 4×√K
Answer: c
Clarification: According to Indian standards, the error in mm for accurate levelling for principal benchmarks or for extensive surveys is given as 12.0×√K.

12. What is the error in mm for precise levelling for benchmarks of widely distributed points?
a) 100×√K
b) 24×√K
c) 12.0×√K
d) 4×√K
Answer: d
Clarification: According to Indian standards, the error in mm for precise levelling for benchmarks of widely distributed points is given as 4×√K.

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