Recent questions and answers in Geomatics Engineering

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1

GATE Civil 2021 Set 2 | Question: 5
In general, the $\text{CORRECT}$ sequence of surveying operations is Field observations $\rightarrow$ Reconnaissance $\rightarrow$ Data analysis $\rightarrow$ Map making Data analysis $\rightarrow$ Reconnaissance $\rightarrow$ Field ... $\rightarrow$ Data analysis $\rightarrow$ Field observations $\rightarrow$ Map making

asked Mar 1 in Geomatics Engineering by jothee (5.2k points)

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GATE Civil 2021 Set 2 | Question: 25
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 &\text{Surveyor} & \text{Angle $ ... $\theta$ ( in degree, $\textit{round off to two decimal places}$is _________________

asked Mar 1 in Geomatics Engineering by jothee (5.2k points)

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3

GATE Civil 2021 Set 2 | Question: 34
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 $\text{-2.8 m}$. The length and bearing of the closing error, respectively, are $\text{3.50 m}$ ... $53.13^{\circ}$ $\text{SE}$ $\text{3.50 m}$ and $53.13^{\circ}$ $\text{SE}$

asked Mar 1 in Geomatics Engineering by jothee (5.2k points)

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GATE Civil 2021 Set 1 | Question: 16
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 parts Contours of different elevations may intersect each other in case of an overhanging cliff Planimeter is used for measuring 'area'

asked Feb 20 in Geomatics Engineering by Arjun (8.7k points)

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GATE Civil 2021 Set 1 | Question: 17
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 $270^{\circ}$ ... line In the case of fixed hair stadia tachometry, the staff intercept will be larger, when the staff is held nearer to the observation point

asked Feb 20 in Geomatics Engineering by Arjun (8.7k points)

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6

GATE Civil 2021 Set 1 | Question: 55
Traversing is carried out for a closed traverse $\text{PQRS}$. The internal angles at vertices $\text{P, Q, R and S}$ are measured as $92^{\circ},68^{\circ},123^{\circ}$ and $77^{\circ}$, respectively. If fore bearing of line $\text{PQ}$ is $27^{\circ}$, fore bearing of line $\text{RS}$ (in degrees, in integer) is ___________________

asked Feb 20 in Geomatics Engineering by Arjun (8.7k points)

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7

GATE2020-CE-1-21
A road in a hilly terrain is to be laid at a gradient of $4.5\%$. A horizontal curve of radius $100\:m$ is laid at a location on this road. Gradient needs to be eased due to combination of curved horizontal and vertical profiles of the road. As per IRC, the compensated gradient (in $\%$, round off to one decimal place), is _______.

asked Feb 28, 2020 in Geomatics Engineering by jothee (5.2k points)

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8

GATE2020-CE-1-38
An open traverse PQRST is surveyed using theodolite and the consecutive coordinates obtained are given in the table If the independent coordinates (Northing, Easting) of station $P$ are $(400\:m,200\:m)$, the independent coordinates (in $m$) of station $T$, are $194.7,370.1$ $205.3,429.9$ $394.7,170.1$ $405.3,229.9$

asked Feb 28, 2020 in Geomatics Engineering by jothee (5.2k points)

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9

GATE2020-CE-1-55
The lengths and bearings of a traverse $PQRS$ are: $\begin{array}{|c|c|c|}\hline \text{Segment}&\text{Length}\:(m) &\text{Bearing}\\\hline PQ&40&80^\circ{} \\\hline QR&50&10^\circ{} \\\hline RS&30&210^\circ{}\\\hline\end{array}$ The length of line segment SP (in $m$, round off to two decimal places), is __________

asked Feb 28, 2020 in Geomatics Engineering by jothee (5.2k points)

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10

GATE2020 CE-2-38
A theodolite was set up at a station $P$. The angle of depression to a vane $2\ m$ above the food of a staff held at another station $Q$ was $45^\circ$. The horizontal distance between stations $P$ and $Q$ is $20\: m$. The staff reading at a benchmark $S$ ... to curvature and refraction, the $RL$ of the station $Q\: \text{(in m)},$ is $413.050$ $413.955$ $431.050$ $435.955$

asked Feb 13, 2020 in Geomatics Engineering by jothee (5.2k points)

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GATE2020 CE-2-55
A theodolite is set up at station $A$. The $RL$ of instrument axis is $212.250\: m$. The angle of elevation to the top of a $4\: m$ long staff, held vertical at station $B$, is $7^{\circ}$.The horizontal distance between stations $A$ and $B$ ... the errors due to curvature of earth and refraction, the $RL$ (in $m,$ round off to three decimal places) of station $B$ is ________.

asked Feb 13, 2020 in Geomatics Engineering by jothee (5.2k points)

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12

GATE2017 CE-2-13
The method of orientation used, when the plane table occupies a position not yet located on the map, is called as traversing radiation levelling resection

asked Aug 7, 2019 in Geomatics Engineering by gatecse (4k points)

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13

GATE2017 CE-2-22
The VPI (vertical point of section) is $100$ m away (when measured along the horizontal) from the VPC (vertical point of curvature). If the vertical is parabolic, the length of the curve (in meters and measured along the horizontal) is _______

asked Aug 7, 2019 in Geomatics Engineering by gatecse (4k points)

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14

GATE2017 CE-2-25
While aligning a hill road with a ruling gradient $6\%$, a horizontal curve of radius $50 \: m$ is encountered. The grade compensation (in percentage, up to two decimal places) to be provided for this case would be _________

asked Aug 7, 2019 in Geomatics Engineering by gatecse (4k points)

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15

GATE2017 CE-2-38
Two towers, A and B, standing vertically on a horizontal ground, appear in a vertical aerial photograph as shown in the figure. The length of the image of the tower A on the photograph is $1.5$ cm and the tower B is $2.0$ cm. The distance of the top tower A ( ... point $p$ of the photograph. If the height of the tower B is $80$ m, the height (in meters) of the tower A is ________

asked Aug 7, 2019 in Geomatics Engineering by gatecse (4k points)

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16

GATE2017 CE-2-55
An observer standing on the deck of a ship just sees the top of a lighthouse. The top of the lighthouse is $40$ m above the sea level and the height of the observer’s eye is $5$ m above the sea level. The distance $9$ in km, up to one decimal place) of teh observer from the lighthouse is __________

asked Aug 7, 2019 in Geomatics Engineering by gatecse (4k points)

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17

GATE2019 CE-1: 10
The interior angles of four triangles are given below: ... avoided in Triangulation surveys? $\text{Both P and R}$ $\text{Both Q and R}$ $\text{Both P and S}$ $\text{Both Q and S}$

asked Feb 14, 2019 in Geomatics Engineering by Arjun (8.7k points)

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18

GATE2019 CE-1: 35
A survey line was measured to be $285.5 \: m$ with a tape having a nominal length of $30 \: m$. On checking, the true length of the tape was found to be $0.05 \: m$ too short. If the line lay on a slope of $1$ in $10$, the reduced length (horizontal length) of the line for plotting of survey work would be $283.6 \: m$ $284.5 \: m$ $285.0 \: m$ $285.6 \: m$

asked Feb 14, 2019 in Geomatics Engineering by Arjun (8.7k points)

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19

GATE2019 CE-1: 47
A parabolic vertical curve is being designed to join a road of grade $+5 \%$ with a road of grade $-3 \%$. The length of the vertical curve is $400 \: m$ measured along the horizontal. The vertical point of curvature (VPC) is located on the ... $m$, round off to the nearest integer) is _________

asked Feb 14, 2019 in Geomatics Engineering by Arjun (8.7k points)

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20

GATE2019 CE-2: 22
The data from a closed traverse survey PQRS (run in the clockwise direction) are given in the table $\begin{array}{|c|c|} \hline \text{Line} & \text{Included angle (in degrees)} \\ \hline PQ & 88 \\ \hline QR & 92 \\ \hline RS & 94 \\ \hline SP & 89 \\ \hline \end{array}$ The closing error for the traverse PQRS (in degrees) is ______

asked Feb 12, 2019 in Geomatics Engineering by Arjun (8.7k points)

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21

GATE2019 CE-2: 33
A camera with a focal length of $20$ cm fitted in an aircraft is used for taking vertical aerial photographs of a terrain. The average elevation of the terrain is $1200 \: m$ above mean sea level (MSL). What is the height above MSL at which an aircraft must fly in order to get the aerial photographs at a scale of $1:8000$? $2600 \: m$ $2800 \: m$ $3000 \: m$ $3200 \: m$

asked Feb 12, 2019 in Geomatics Engineering by Arjun (8.7k points)

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22

GATE2016-2-23
Optimal flight planning for a photogrammetric survey should be carried out considering only side-lap only end-lap either side-lap or end-lap both side-lap as well as end-lap

asked Mar 28, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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23

GATE2016-2-24
The reduced bearing of a $10 \: m$ long line is $N 30^{\circ}E$. The departure of the line is $10.00 \: m$ $8.66 \: m$ $7.52 \: m$ $5.00 \: m$

asked Mar 28, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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24

GATE2016-2-55
A tall tower was photographed from an elevation of $700$ m above the datum. The radial distances of the top and bottom of the tower from the principal points are $112.50$ mm and $82.40$ mm, respectively. If the bottom of the tower is at an elevation $250$ m above the datum, then the height (expressed in m) of the tower is _________

asked Mar 28, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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25

GATE2016-1-23
The minimum number of satellites needed for a GPS to determine its position precisely is $2$ $3$ $4$ $24$

asked Mar 28, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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26

GATE2016-1-24
The system that uses the Sun as a source of electromagnetic energy and records the naturally radiated and reflected energy from the object is called Geographical Information System Global Positioning System Passive Remote Sensing Active Remote Sensing

asked Mar 28, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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27

GATE2016-1-25
The staff reading taken on a workshop floor using a level is $0.645$ m. The inverted staff reading taken to the bottom of a beam is $2.960$ m. The reduced level of the floor is $40.500$ m. The reduced level (expressed in m) of the bottom of the beam is $44.105$ $43.460$ $42.815$ $41.145$

asked Mar 28, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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28

GATE2016-1-55
The vertical angles subtended by the top of a tower T at two instrument stations set up at P and Q, are shown in the figure. The two stations are in line with the tower and spaced at a distance of $60$ m. Readings taken from these two stations on a leveling staff ... ($BM=450.000$ m) are also shown in the figure. The reduced level of the top of the tower T (expressed in m) is _____

asked Mar 28, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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29

GATE2017 CE-1: 19
The number of spectral bands in the Enhanced Thematic Mapper sensor on the remote sensing satellite Landsat-$7$ is: $64$ $10$ $8$ $15$

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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30

GATE2017 CE-1: 35
The observed bearings of a traverse are given below: ... $R$ Only $S$ $R$ and $S$ $P$ and $Q$

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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31

GATE2015-2-24
In a leveling work, sum of the Back Sight (B.S.) and Force Sight (F.S.) have been found to be $3.085$ m and $5.645$ m respectively. If the Reduced Level (R.L.) of the starting station is $100.000$ m, the R.L. (in m) of the last station is ________.

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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32

GATE2015-2-25
The combined correction due to curvature and refraction (in m) for a distance of $1$ km on the surface of Earth is: $0.0673$ $0.673$ $7.63$ $0.763$

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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33

GATE2015-2-54
The bearings of two inaccessible stations, $S_1$ (Easting $500$ m, Northing $500$ m) and $S_2$ (Easting $600$ m, Northing $450$ m) from a station $S_3$ were observed as $225^{\circ}$ and $153^{\circ}\: 26’$ respectively. The independent Easting (in m) of station $S_3$ is: $450.000$ $570.710$ $550.000$ $650.000$

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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34

GATE2015-2-55
Two Pegs A and B were fixed on opposite banks of a $50$ m wide river. The level was set up at A and the staff readings on Pegs A and B were observed as $1.350$ m and $1.550$ m, respectively. Thereafter the instrument was shifted and set up at B. The staff reading on Pegs B and ... m and $0.550$ m, respectively. If the R.L. of Peg A is $100.200$ m, the R.L. (in m) of Peg B is _______.

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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35

GATE2015-1-24
Which of the following statements is FALSE? Plumb line is along the direction of gravity Mean Sea Level (MSL) is used as a reference surface for establishing the horizontal control Mean Sea Level (MSL) is a simplification of the Geoid Geoid is an equi-potential surface of gravity

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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36

GATE2015-1-25
In a closed loop traverse of $1$ km total length, the closing errors in departure and latitude are $0.3$ m and $0.4$ m, respectively. The relative precision of this traverse will be: $1:5000$ $1:4000$ $1:3000$ $1:2000$

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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37

GATE2015-1-54
In a survey work, three independent angles $X, Y$ and $Z$ were observed with weights $W_X, W_Y, W_Z$,respectively. The weight of the sum of angles $X, Y$ and $Z$ is given by: $1/ \big( \dfrac{1}{W_X} + \dfrac{1}{W_Y} + \dfrac{1}{W_Z} \big) \\$ $\big( \dfrac{1}{W_X} + \dfrac{1}{W_Y} + \dfrac{1}{W_Z} \big) \\$ $W_X +W_Y+W_Z \\$ $W_X^2 +W_Y^2+W_Z^2$

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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38

GATE2015-1-55
In a region with magnetic declination of $2^{\circ}E$, the magnetic Fore bearing (FB) of a line $AB$ was measured as $N79^{\circ}50'E$. There was local attraction at $A$. To determine the correct magnetic bearing of the line, a point $O$ was selected at which there was no local ... true $FB$ of line $AB?$ $N81^{\circ}50'E$ $N82^{\circ}10'E$ $N84^{\circ}10'E$ $N77^{\circ}50'E$

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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39

GATE2014-2-54
A tacheometer was placed at point $P$ to estimate the horizontal distances $PQ$ and $PR$. The corresponding stadia intercepts with the telescope kept horizontal, are $0.320$ m and $0.210$ m, respectively. The $\angle QPR $ ... $=100$ and stadia addition constant $=0.10$ m, the horizontal distance (in m) between the points $Q$ and $R$ is __________

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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40

GATE2014-2-25
The survey carried out to delineate natural features, such as hills, rivers, forests and man-made features, such as towns, village, buildings, roads, transmission line, and canals is classified as engineering survey geological survey land survey topographic survey

asked Mar 26, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)