Recent questions and answers in Geomatics Engineering

0 0 votes
1 1 answer
Which one of the following statements is TRUE with respect to levelling survey?A level surface at all points is normal to the direction of the force of gravity.Two level ...
0 0 votes
0 0 answers
A tourist visiting a city holds a map prepared at a scale of $1: 25000$. The tourist measures the distance between place $\text{A}$ and place $\text{B}$ in the city as $1...
0 0 votes
0 0 answers
For the traverse given below, the benchmark is at ground point $\text{L}$. The Reduced Level (RL) of $\text{L}$ is $150.000$ m. The direction of the traverse is from $\te...
0 0 votes
0 0 answers
Interior angles measured at the locations of a closed traverse $\text{ABCDA}$ are given in table below.\[\begin{array}{|c|c|}\hline\text{Location} & \text{Interior angle}...
0 0 votes
0 0 answers
The Whole Circle Bearing (WCB) of line AB is $150^{\circ}$. The length of $\text{AB}$ is $100$ m. The latitude and departure values, respectively, for this line are:$+86....
0 0 votes
0 0 answers
A $30$ m long tape is standardized at $25^{\circ} \mathrm{C}$. It was used to measure the length of a line which came out to be $200$ m. The temperature during the measur...
0 0 votes
0 0 answers
The height of the plane of collimation of a levelling instrument is $100.000$ m from a datum. The levelling instrument measures a Back Sight of $1.500$ m on a vertically ...
0 0 votes
0 0 answers
Locations $P$ and $Q$ are separated by a wide valley. The difference in levels of locations $P$ and $Q$ measured by a levelling instrument stationed near $P$ is $3.0$ m. ...
0 0 votes
1 1 answer
If the Fore Bearing of the lines $AB$ and $BC$ are $60^{\circ}$ and $122^{\circ}$, respectively, then the interior angle $\angle \mathrm{ABC}$ (in degrees) is $\_\_\_\_\_...
0 0 votes
1 1 answer
In levelling between two points $A$ and $B$ on the opposite banks of a river, the readings are taken by setting the instrument both at $A$ and $B$ , as shown in the table...
0 0 votes
1 1 answer
For a given traverse, latitudes and departures are calculated and it is found that sum of latitudes is equal to $\text{+2.1 m}$ and the sum of departures is equal to $\te...
0 0 votes
1 1 answer
​​​​​If the number of sides resulting in a closed traverse is increased from three to four, the sum of the interior angles increases by$90^{\circ}$$180^{\circ}$$270^{\cir...
0 0 votes
1 1 answer
Differential levelling is carried out from point $\text{P(B M}:+200.000 \mathrm{~m})$ to point $\text{R}$. The readings taken are given in the table.PointsStaff readings ...
0 0 votes
1 1 answer
​​​​​​If the horizontal distance between a staff point and the point of observation is $d$, the error due to the curvature of earth is proportional to$d$$\frac{1}{d}$$d^{...
0 0 votes
1 1 answer
​​​​​​If the quadrantal bearing of a line is $\mathrm{N} 30^{\circ} \mathrm{W}$, then the whole circle bearing of the line is$120^{\circ}$$210^{\circ}$$300^{\circ}$$330^{...
0 0 votes
1 1 answer
A surveyor measured the distance between two points on the plan drawn to a scale of $1 \mathrm{~cm}=40 \mathrm{~m}$ and the result was $468 \: \mathrm{m}$. Later, it was ...
0 0 votes
0 0 answers
Road $A$ and Road $B$ are joined by a circular horizontal curve of radius $200 \: \mathrm{m}$ as shown in the figure. Road $A$ and Road $B$ are tangential to the curve at...
0 0 votes
0 0 answers
​​​​​​For a reconnaissance survey, it is necessary to obtain vertical aerial photographs of a terrain at an average scale of $1: 13000$ using a camera. If the permissible...
0 0 votes
0 0 answers
​​​​​What is the CORRECT match between the survey instruments/parts of instruments shown in the table and the operations carried out with them?\begin{array}{|l|l|}\hline ...
0 0 votes
0 0 answers
To finalize the direction of a survey, four surveyors set up a theodolite at a station $\mathrm{P}$ and performed all the temporary adjustments. From the station $\mathrm...
0 0 votes
0 0 answers
A child walks on a level surface from point $\text{P}$ to point $\text{Q}$ at a bearing of $30^{\circ}$, from point $\mathrm{Q}$ to point $\mathrm{R}$ at a bearing of $90...
0 0 votes
0 0 answers
A surveyor observes a zenith angle of $93^{\circ} 00^{\prime} 00^{\prime \prime}$ during a theodolite survey. The corresponding vertical angle is$-03^{\circ} 00^{\prime} ...
0 0 votes
0 0 answers
Among the following statements relating the fundamental lines of a transit theodolite, which one is CORRECT?The line of collimation must be perpendicular to the horizonta...
0 0 votes
0 0 answers
​​​​​​A map is prepared with a scale of $1: 1000$ and a contour interval of $1 \mathrm{~m}$. If the distance between two adjacent contours on the map is $10 \mathrm{~mm}$...
0 0 votes
0 0 answers
A bird is resting on a point $\mathrm{P}$ at a height of $8 \mathrm{~m}$ above the Mean Sea Level (MSL). Upon hearing a loud noise, the bird flies parallel to the ground ...
0 0 votes
0 0 answers
The magnetic bearing of the sun for a location at noon is $ 183^{\circ} \; 30^{\prime}$. If the sun is exactly on the geographic meridian at noon, the magnetic declinatio...
0 0 votes
0 0 answers
If the size of the ground area is $6 \mathrm{~km} \times 3 \mathrm{~km}$ and the corresponding photo size in the aerial photograph is $30 \mathrm{~cm} \times 15 \mathrm{~...
0 0 votes
0 0 answers
A delivery agent is at a location $\mathrm{R}$. To deliver the order, she is instructed to travel to location P along straight-line paths of $\mathrm{RC}, \mathrm{CA}, \m...
0 0 votes
0 0 answers
The direct and reversed zenith angles observed by a theodolite are $56^{\circ} 00^{\prime} 00^{\prime \prime}$ and $303^{\circ} 00^{\prime} 00^{\prime \prime}$, respectiv...
0 0 votes
0 0 answers
A student is scanning his $10 \text { inch } \times 10 \text { inch}$ certificate at $ 600 \text { dots per inch (dpi)}$ to convert it to raster. What is the percentage r...
0 0 votes
0 0 answers
Trigonometric levelling was carried out from two stations $\mathrm{P}$ and $\mathrm{Q}$ to find the reduced level ($\text{R. L.}$) of the top of hillock, as shown in the ...
0 0 votes
0 0 answers
If the magnetic bearing of the Sun at a place at noon is $\text{S} \; 2^{\circ} \; \text{E},$ the magnetic declination (in $\textbf{degrees}$) at that place is$2^{\circ} ...
0 0 votes
0 0 answers
An aerial photograph is taken from a flight at a height of $3.5$ $\text{km}$ above mean sea level, using a camera of focal length $152$ $\text{mm}$. If the average ground...
0 0 votes
0 0 answers
A line between stations $P$ and $Q$ laid on a slope of $1$ in $5$ was measured as $350\; m$ using a $50\; m$ tape. The tape is known to be shortly by $0.1\; m$.The correc...
0 0 votes
0 0 answers
The bearing of a survey line is $N31 ^{\circ} 17’W$. Its azimuth observed from north is _________________ deg. (round off to two decimal places)
0 0 votes
0 0 answers
The Cartesian coordinates of a point $P$ in a right-handed coordinate system are $(1, 1, 1)$. The transformed coordinates of $P$ due to a $45^{\circ}$ clockwise rotation ...
0 0 votes
0 0 answers
In general, the $\text{CORRECT}$ sequence of surveying operations isField observations $\rightarrow$ Reconnaissance $\rightarrow$ Data analysis $\rightarrow$ Map makin...
0 0 votes
0 0 answers
A horizontal angle $\theta$ is measured by four different surveyors multiple times and the values reported are given below.$$\begin{array}{|lc|cI|cI|cI|cI|cI|}\hline&\tex...
0 0 votes
0 0 answers
Which of the following is $\text{NOT}$ a correct statement?The first reading from a level station is a 'Fore Sight'Basic principle of surveying is to work from whole to p...
0 0 votes
0 0 answers
Which of the following is/are correct statement$\text{(s)}$?Back Bearing of a line is equal to Fore Bearing $\pm 180^{\circ}$If the whole circle bearing of a line is $270...
To see more, click for all the questions in this category.