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I applied via Walk-in and was interviewed in Sep 2021. There was 1 interview round.
I applied via Referral and was interviewed before Jul 2020. There were 6 interview rounds.
posted on 11 Oct 2020
The degree between two lines can be calculated using trigonometry and the coordinates of the lines.
Find the slope of each line using the formula (y2 - y1) / (x2 - x1)
Calculate the angle between the slopes using the formula tan^-1((m2 - m1) / (1 + m1 * m2))
Convert the angle from radians to degrees
To convert quadrant bearing to whole circle bearing, add 90 degrees to the quadrant bearing.
Quadrant bearings range from 0 to 90 degrees.
Whole circle bearings range from 0 to 360 degrees.
To convert, add 90 degrees to the quadrant bearing.
For example, a quadrant bearing of N45°E would become 135°.
Contours are lines on a map that connect points of equal elevation, representing the shape and relief of the land.
Contours are used in land surveying to depict the topography of an area.
They connect points of equal elevation, allowing surveyors to visualize the shape and relief of the land.
Contours are typically represented as curved lines on a map, with each line representing a specific elevation.
The spacing between c...
To find out the angle and distance of a polygon, you can use trigonometry and surveying techniques.
Measure the lengths of each side of the polygon using a tape measure or surveying equipment.
Use a theodolite or total station to measure the angles between each side of the polygon.
Apply trigonometric formulas to calculate the angles and distances based on the measured values.
For example, you can use the Law of Cosines to...
UTM stands for Universal Transverse Mercator. It is a coordinate system used to locate positions on the Earth's surface.
UTM is a grid-based system that divides the Earth into 60 zones, each 6 degrees of longitude wide.
It uses a metric coordinate system, with eastings and northings measured in meters.
UTM coordinates consist of a zone number, hemisphere (N or S), easting, and northing.
For example, a UTM coordinate might ...
WGS stands for World Geodetic System, a standard reference system used for mapping and surveying the Earth.
WGS is a global coordinate system used to accurately represent the Earth's surface.
It provides a consistent framework for measuring and locating points on the Earth's surface.
WGS is commonly used in GPS navigation, cartography, and land surveying.
It uses latitude and longitude coordinates to define positions on th...
Working with GPS involves understanding its functions, using the correct equipment, and interpreting the data accurately.
Learn the basic functions of GPS devices and how to operate them.
Ensure that the GPS device is properly calibrated and has a clear view of the sky for accurate readings.
Use the appropriate GPS equipment for the specific surveying task, such as a handheld GPS unit or a survey-grade GPS receiver.
Unders...
The number of satellites a GPS receiver wants depends on its accuracy requirements and the availability of satellite signals.
The minimum number of satellites required for a GPS receiver to function is 4.
Most GPS receivers aim to acquire signals from at least 8 to 12 satellites for better accuracy.
The more satellites a GPS receiver can track, the more accurate its positioning and timing information becomes.
GPS receivers...
I applied via Referral and was interviewed in Oct 2021. There was 1 interview round.
I applied via Walk-in and was interviewed in Jan 2022. There were 2 interview rounds.
The least count of a total station is the smallest measurement that can be accurately read or recorded by the instrument.
The least count is determined by the precision of the instrument's internal components.
It is typically expressed in units of distance, such as millimeters or seconds of arc.
For example, if the least count of a total station is 5mm, it means that the instrument can measure distances accurately to the ...
The height of a mini prism varies depending on the manufacturer and model.
Mini prisms are used in surveying to measure distances and angles.
The height of a mini prism is typically between 25mm to 50mm.
The height of a mini prism can affect the accuracy of the surveying measurements.
It is important to use the correct height of mini prism for the specific surveying task.
Manufacturers usually provide the height of their mi
The least count of an auto level is the smallest measurement that can be read on the instrument.
The least count is determined by the size of the divisions on the instrument's scale.
It is usually expressed in millimeters or fractions of an inch.
For example, if the least count is 0.5 mm, the instrument can measure differences in elevation of 0.5 mm or greater.
The least count can vary depending on the make and model of th
Laying out coordinates involves marking specific points on the ground based on their x, y, and sometimes z values.
Use a total station or GPS device to accurately measure and record coordinates
Mark points with stakes, flags, or paint for future reference
Ensure coordinates are recorded in the correct datum and projection for accurate mapping
Auto level is a surveying instrument used to measure height differences in the field.
Auto level uses a compensator to ensure accurate readings even on uneven terrain.
It is commonly used in construction, land development, and road building projects.
The instrument is set up on a tripod and the surveyor looks through the eyepiece to read the height difference on a graduated staff.
Auto levels are preferred for their ease o...
Trivers for target point refers to the process of using trigonometry to calculate the coordinates of a specific point on a surveying site.
Trivers formula involves using angles and distances to calculate the coordinates of a target point.
It is essential for accurate land surveying and mapping.
Example: If you have the angle and distance measurements from two known points, you can use Trivers formula to calculate the coor
A point for set out is a reference point used by surveyors to mark the location of specific points on a site.
Set out points are typically marked with stakes, nails, or paint on the ground.
These points are used to guide construction workers in accurately placing structures or boundaries.
Surveyors use measurements and calculations to determine the exact coordinates of set out points.
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