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Which surveying instrument is primarily used to measure horizontal and vertical angles accurately in the field?

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Free Assistant Engineer - Soil Conservation Practice Questions

Assistant Engineer - Soil ConservationThe Assistant Engineer - Soil Conservation exam (Code: 696/2025) is conducted by Kerala Public Service Commission for recruitment to a government post in Soil Survey and Soil Conservation department. Candidates with a degree in Agricultural or Civil Engineering are eligible. The exam offers a pay scale of ₹55,200-1,15,300 with one vacancy available. Age limits apply with relaxations for reserved categories. The selection process involves direct recruitment with probation and mandatory training. Applications must be submitted online through the One Time Registration portal of Kerala PSC before the deadline.Exam Code: 696/2025One vacancyDegree in Agricultural/Civil Engineering requiredAge limit 20-36 yearsKerala PSCDirect RecruitmentNo application feeApply online before 04.02.2026 midnight via www.keralapsc.gov.in

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Q1. Which surveying instrument is primarily used to measure horizontal and vertical angles accurately in the field?

  1. Theodolite
  2. Leveling Instrument
  3. Chain
  4. Plumb Bob

Q2. An assistant engineer is tasked with planning a survey to map the contours and elevation changes of a hilly terrain for soil conservation planning. Which survey type should be selected and why?

  1. Cadastral Survey, to define land ownership for conservation zones.
  2. Topographic Survey, to capture elevation and terrain features.
  3. Hydrographic Survey, to measure water bodies affecting the terrain.
  4. Geological Survey, to analyze soil types and rock formations.

Q3. A soil conservation engineer needs to map a hilly terrain to plan contour bunding. Which objective of surveying is most relevant in this scenario?

  1. Establishing the chemical composition of soil
  2. Determining the elevation and slope of the terrain
  3. Measuring soil moisture content
  4. Estimating crop yield potential

Q4. Compare chain surveying with compass surveying in terms of their suitability for rough terrain.

  1. Chain surveying is more suitable because it requires less equipment
  2. Compass surveying is more suitable because it can measure directions without clear linear paths
  3. Both are equally suitable for rough terrain
  4. Neither is suitable for rough terrain

Q5. {{IMAGE_PLACEHOLDER}}In the given compass survey traverse, the fore bearing of line AB is 45°, and the back bearing of line BC is 225°. If the magnetic declination is 5° east, what is the true bearing of line AB?

  1. 40°
  2. 50°
  3. 230°
  4. 220°

Q6. In a chain survey, offsets are taken to locate details away from the main survey lines. Which method is commonly used to measure perpendicular offsets?

  1. Using a tape held at an angle to the chain line
  2. Using a cross-staff or optical square to ensure perpendicularity
  3. Measuring diagonal distances and calculating perpendicular offsets
  4. Estimating offsets visually without instruments

Q7. In a scenario where you need to establish a horizontal plane for construction, which surveying instrument would you select and why?

  1. Theodolite, because it measures angles precisely
  2. Leveling Instrument, because it helps determine elevation differences
  3. Tachometer, because it measures distances quickly
  4. Compass, because it shows direction

Q8. A topographic survey of a rectangular plot measures the following elevations at four corners (in meters): A=120, B=125, C=123, D=118. Calculate the average elevation of the plot.

  1. 121.5 m
  2. 121.0 m
  3. 121.5 m
  4. 121.0 m

Q9. Which of the following instruments is essential for establishing the true north direction during a surveying operation?

  1. Prismatic Compass
  2. Plane Table
  3. Dumpy Level
  4. Chain

Q10. A surveyor measures a baseline of 150 m using a chain. If the chain length is 20 m but the chain is found to be 0.2 m too long, what is the corrected length of the baseline?

  1. 149.25 m
  2. 150.75 m
  3. 149.50 m
  4. 150.00 m

Q11. A surveyor uses a leveling instrument to measure the height difference between two points. If the instrument reading at point A is 1.250 m and at point B is 2.675 m, what is the elevation difference (B relative to A)?

  1. 1.425 m, B is higher than A
  2. 1.425 m, B is lower than A
  3. 3.925 m, B is higher than A
  4. 3.925 m, B is lower than A

Q12. Compare the primary applications of geological surveys and hydrographic surveys in the context of soil conservation engineering.

  1. Geological surveys assess soil and rock stability; hydrographic surveys map water bodies influencing erosion.
  2. Geological surveys map water depths; hydrographic surveys analyze soil composition.
  3. Both surveys are used interchangeably for mapping terrain elevation.
  4. Geological surveys focus on vegetation; hydrographic surveys focus on urban planning.

Q13. During compass surveying, a surveyor notices that the magnetic needle does not point exactly to the magnetic north but is deflected by a certain angle. What is this phenomenon called?

  1. Magnetic declination
  2. Local attraction
  3. Magnetic dip
  4. Variation

Q14. In chain surveying, why is it important to select well-defined and intervisible stations?

  1. To ensure accurate measurement of vertical angles
  2. To facilitate easy chaining and correct plotting of the survey
  3. To reduce the need for levelling instruments
  4. To avoid the use of offsets during the survey

Q15. Which type of survey is primarily used to establish the boundaries and ownership of land parcels?

  1. Topographic Survey
  2. Cadastral Survey
  3. Geological Survey
  4. Hydrographic Survey
Free Assistant Engineer - Soil Conservation Practice Questions | Kerala PSC Prep