Recent questions and answers in Geomatics Engineering - GATE Civil Q&A

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1

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 (2.7k points)

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2

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 (2.7k points)

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3

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 (2.7k points)

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4

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 (2.7k points)

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5

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 (2.7k points)

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6

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 (3.9k points)

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7

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 (3.9k points)

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8

GATE2017 CE-2-23
During a storm event in a certain period, the rainfall intensity is $3.5$ cm/hour and the $\Phi$-index is $1.5$ cm/hour. The intensity of effective rainfall (in cm/hour, up to one decimal place) for this period is ________

asked Aug 7, 2019 in Geomatics Engineering by gatecse (3.9k points)

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9

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 (3.9k points)

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10

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 (2.8k points)

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11

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 (2.8k points)

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12

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 (2.8k points)

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13

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 (2.8k points)

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14

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 (2.8k points)

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15

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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16

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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17

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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18

GATE2017 CE-1: 16
A super-elevation $e$ is provided on a circular horizontal curve such that a vehicle can be stopped on the curve without sliding. Assuming a design speed $v$ and maximum coefficient of side friction $f_{max}$, which one of the following criteria should be satisfied? $e \leq f_{max}$ $e > f_{max}$ no limit on $e$ can be set $e = \dfrac{1-(f_{max})^2}{f_{max}}$

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

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19

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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20

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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21

GATE2015-2-16
The relationship between the length scale ratio $(L_r)$ and the velocity scale ratio $(V_r)$ in the hydraulic models, in which Froude dynamic similarity is maintained is: $V_r=L_r \\$ $L_r=\sqrt{V_r} \\$ $V_r= L_r^{1.5} \\$ $V_r=\sqrt{L_r}$

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

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22

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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23

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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24

GATE2014-2-24
A road is being designed for a speed of $110$ km/hr on a horizontal curve with a super elevation of $8 \%$. If the coefficient of side friction is $0.10$, the minimum radius of the curve (in m) required for safe vehicular movement is $115.0$ $152.3$ $264.3$ $528.5$

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

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25

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)

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26

GATE2014-1-55
Group I lists tool/instrument while Group II lists the method of surveying. Match the tool/instrument with the corresponding method of surveying. ... $P-2; Q-4; R-3; S-1$ $P-1; Q-2; R-4; S-3$ $P-3; Q-1; R-2; S-4$

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

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27

GATE2014-1-54
A levelling is carried out to establishing the Reduced Levels (RL) of point R with respect to the Bench Mark (BM) at P. The staff readings taken are given below: ... $RL$ of $P$ is $+100.000$ m, then $RL$ (in m) of $R$ is $103.355$ $103.155$ $101.455$ $100.355$

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

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28

GATE2014-1-28
A particle moves along a curve whose parametric equations are: $x=t^3+2t$, $y=-3e^{-2t}$ and $z=2 \sin (5t)$, where $x$, $y$ and $z$ show variations of the distance covered by the particle (in cm) with time $t$ (in s). The magnitude of the acceleration of the particle (in $cm/s^2$) at $t=0$ is ________

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

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29

GATE2014-1-25
The Reduced Levels (RLs) of the points P and Q are $+49.600$ m and $+51.870$ respectively. Distance PQ is $20$ m. The distance (in m from P) at which the $+51.000$ m contour cuts the line PQ is $15.00$ $12.33$ $3.52$ $2.27$

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

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30

GATE2013-54
At a station, Storm I of $5$ hour duration with intensity $2$ cm/h resulted in a runoff of $4$ cm and Storm II of $8$ hour duration resulted in a runoff of $8.4$ cm. Assume that the $\phi$ – index is the same for the both the storms. The $\phi$ – index (in cm/h) is $1.2$ $1.0$ $1.6$ $1.4$

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

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31

GATE2013-55
At a station, Storm I of $5$ hour duration with intensity $2$ cm/h resulted in a runoff of $4$ cm and Storm II of $8$ hour duration resulted in a runoff of $8.4$ cm. Assume that the $\phi$ – index is the same for the both the storms. The intensity of storm II (in cm/h) is $2.00$ $1.75$ $1.50$ $2.25$

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

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32

GATE2013-47
A theodolite is set up at station A and a $3$ m long staff is held vertically at station B. The depression angle reading at $2.5$ m marking on the staff is $6^{\circ}10’$. The horizontal distance between A and B is $2200$ m. Height of instrument at station A is $1.1$ m and R.L. of A is $880.88$ m. Apply the curvature and refraction correction, and determine the RL of B (in m) _______

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

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33

GATE2013-46
Following bearings are observed while traversing with a compass ... the corrected fore bearing of line BC will be $48^{\circ} 15'$ $50^{\circ} 15'$ $49^{\circ} 45'$ $48^{\circ} 45'$

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

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34

GATE2012-47
The horizontal distance between two stations P and Q is $100 \: m$. The vertical angles from P and Q to the top of a vertical tower at $T$ are $3^{\circ}$ and $5^{\circ}$ above horizontal, respectively. The vertical angles from P and Q to the base of the ... $6.972$ $12.387$ $12.540$ $128.745$

asked Mar 25, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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35

GATE2012-45
The following data are related to a horizontal curved portion of a two-lane highway: length of curve $200$ m, radius of curve $=300$ m and with of pavement $=7.5$ m. In order to provide a stopping sight distance (SSD) of $80$ m, the set back distance (in m) required from the centre line of the inner lane of the pavement is $2.54$ $4.55$ $7.10$ $7.96$

asked Mar 25, 2018 in Geomatics Engineering by Milicevic3306 (11.9k points)

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36

GATE2018 CE-1: 35
The following details refer to a closed traverse: Line Consecutive coordinate Northing (m) Southing (m) Easting (m) Westing (m) PQ --- $437$ $173$ --- QR $101$ ---- $558$ ---- RS $419$ --- --- $96$ SP ---- $83$ ---- $634$ The length and direction (whole circle bearing) of ... are $1$ m and $90^{\circ}$ $2$ m and $90^{\circ}$ $1$ m and $270^{\circ}$ $2$ m and $270^{\circ}$

answered Feb 20, 2018 in Geomatics Engineering by shk (140 points)

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37

GATE2018 CE-2: 36
A level instrument at a height of $1.320$ m has been placed at a station having a Reduced Level (RL) of $112.565$ m. The instrument reads $-2.835$ m on a levelling staff held at the bottom of a bridge deck. The RL (in m) of the bottom of the bridge deck is $116.720$ $116.080$ $114.080$ $111.050$

asked Feb 17, 2018 in Geomatics Engineering by gatecse (3.9k points)

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38

GATE2018 CE-1: 36
A square area (on the surface of the earth) with side $100$ m and uniform height, appears as $1 \: cm^2$ on a vertical aerial photograph. The topographic map shows that a contour of $650$ m passes through the area. If focal length of the camera lens is $150$ mm, the height from which the aerial photograph was taken, is $800$ m $1500$ m $2150$ m $3150$ m

asked Feb 17, 2018 in Geomatics Engineering by gatecse (3.9k points)

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