Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
Co-ordinate length measured perpendicular to an assumed meridian direction is known as_____
Bearing
Latitude(L = lcos╔╡)
Departure(D = lsin╔╡)
A, B and C
Departure(D = lsin╔╡)
In surveying, coordinates are expressed as rectangular components relative to a reference meridian. The coordinate length measured perpendicular to the meridian is defined as Departure, representing the east-west distance of a point or a line from the meridian.
In surveying, coordinates are expressed as rectangular components relative to a reference meridian. The coordinate length measured perpendicular to the meridian is defined as Departure, representing the east-west distance of a point or a line from the meridian.
D=lsin╬╕ тАФ Definition of Departure
L=lcos╬╕ тАФ Definition of Latitude
Given a survey line of length l at a bearing ╬╕ from a meridian, the projection along the meridian is the Latitude (L=lcos╬╕), and the projection at a right angle to the meridian is the Departure (D=lsin╬╕). Departure is positive for lines trending East and negative for lines trending West.
Latitude is the projection on the North-South axis.
Departure is the projection on the East-West axis.
The sum of all latitudes in a closed traverse is zero.
The sum of all departures in a closed traverse is zero.
Simplifies calculation of coordinates in a closed traverse.
Enables precise computation of error of closure.
Depends on the accuracy of linear measurement and angular bearing.
Cumulative errors can affect the calculation if local attraction is present.
Plotting survey maps using coordinate geometry.
Calculating the area of closed traverses using the DMD (Double Meridian Distance) method.
The meridian is typically taken as true north, magnetic north, or an arbitrary local reference.
Option B (Latitude) is the coordinate length measured parallel to the meridian.
C is correct тАФ Departure is the coordinate length measured perpendicular to the meridian, calculated as D=lsin╬╕.
Remember that 'Latitude' relates to 'cos' (vertical/meridian) and 'Departure' relates to 'sin' (horizontal/perpendicular) to avoid confusion during rapid calculations.