List of top Surveying Questions asked in GATE CE

A surveyor measured the distance between two points on the plan drawn to a scale of 1 cm = 40 m and the result was 468 m. Later, it was discovered that the scale used was 1 cm = 20 m.
The true distance between the points (in m) is __________ (round off to the nearest integer).
 

The direct and reversed zenith angles observed by a theodolite are $56^\circ 00' 00''$ and $303^\circ 00' 00''$, respectively. What is the vertical collimation correction?

Trigonometric levelling was carried out from two stations P and Q to find the reduced level (R.L.) of the top of hillock, as shown in the table. The distance between Stations P and Q is 55 m. Assume Stations P and Q, and the hillock are in the same vertical plane. The R.L. of the top of the hillock is  (round off to three decimal places)

The magnetic bearing of the sun for a location at noon is $183^\circ 30'$. If the sun is exactly on the geographic meridian at noon, the magnetic declination of the location is 

If the size of the ground area is $6 \,\text{km} \times 3 \,\text{km}$ and the corresponding photo size in the aerial photograph is $30 \,\text{cm} \times 15 \,\text{cm}$, then the scale of the photograph is $1 : \underline{\hspace{3cm}}$ (in integer). 

A delivery agent travels from $R$ to $P$ along straight-line paths $RC$, $CA$, $AB$, and $BP$, each of length $5\,$km. The whole circle bearings (clockwise from North) are: $RC=120^\circ$, $CA=0^\circ$, $AB=90^\circ$, $BP=240^\circ$. If the latitude $(L)$ and departure $(D)$ of $R$ are $(0,0)$ km, find the latitude and departure of $P$ (rounded to one decimal place). 

If the size of the ground area is $6 \, \text{km} \times 3 \, \text{km}$ and the corresponding photo size in the aerial photograph is $30 \, \text{cm} \times 15 \, \text{cm}$, then the scale of the photograph is $1$