Surveying
Exam Duration: 45 Mins Total Questions : 30
In a plan, a 10 cm scale drawn shrunks to 9.7 cm. If the scale of the given plan is written as 1:250, what is the actual length of a line which at present shows 10 cm?
- (a)
10.31 m
- (b)
25.77 m
- (c)
10.31 cm
- (d)
25.77 cm
Which of the following scale is the smaller and largest respectively?
I. 1cm=10m
II. 1:10000
III. RF=\(\frac { 1 }{ 100000 } \)
IV. 1cm=1000km
- (a)
I,II
- (b)
II,III
- (c)
III,IV
- (d)
IV,I
The length of a survey line was measured with a tape having nominal length 20 m and was found to be 236.4m. As a check the length was again measured with 30 m tape and was found to be 240.5m. On testing it was found that the 20 m tape is 6 cm too short. What is the true length of 30m tape?
- (a)
20 cm too short
- (b)
60 cm too short
- (c)
20 cm too long
- (d)
60 cm too long
The area of a plane of an old map plotted to a scale of 10m to 1cm measures 100.2\({ cm }^{ 2 }\)as measured by planimeter. The plane is found to have shrunk so that a line originally 10cm long measures 9.7 cm. Further the 20m tape used was 8 cm too short. The true area of survey is
- (a)
105.643 acres
- (b)
106.494 acres
- (c)
106.921 acres
- (d)
104.569 acres
With what accuracy must the slope angle \({ 5 }^{ \circ }{ 30 }^{ ' }\) be measured if the horizontal distance from the measured slope distance of 1320.50m is to be accurate to 0.005m?
- (a)
\({ -18 }^{ " }.948\)
- (b)
\({ -8 }^{ " }.948\)
- (c)
\({ -{ 8 }^{ ' }8 }^{ " }.948\)
- (d)
\({ -8 }^{ " }.148\)
The true bearing of a line is \({ 34}^{ \circ }{20 }^{ ' }{ 40 }^{ " }\)and the magnetic declination at the place of observation is \({ 2}^{ \circ }{00 }^{ ' }{ 20 }^{ " }\) on the date of observation. The magnetic bearing of the line is
- (a)
\({ 36}^{ \circ }{21 }^{ ' }{ 00 }^{ " }\)
- (b)
\({ 34}^{ \circ }{20 }^{ ' }{ 20 }^{ " }\)
- (c)
\({ 32}^{ \circ }{20 }^{ ' }{ 20 }^{ " }\)
- (d)
\({ 32}^{ \circ }{00 }^{ ' }{ 20 }^{ " }\)
The magnetic bearing of a line in IIT roorkee was found to be \(N40^{ \circ }30^{ ' }W\) in 1988 when the present magnetic bearing if declination is \({ 2 }^{ \circ }W\)?
- (a)
\(N44^{ \circ }45^{ ' }W\)
- (b)
\(S42^{ \circ }45^{ ' }W\)
- (c)
\(N42^{ \circ }45^{ ' }E\)
- (d)
\(N42^{ \circ }45^{ ' }W\)
The two bearing of TV tower T at HBTI campus Kanpur was observed as \(N3^{ \circ }W\)and the magnetic bearing of same was \(N7^{ \circ }W\). The fore bearing of line AB is \(N70^{ \circ }W\), measured with surveyor compass. What would be the true fore bearing of line AB?
- (a)
\(N78^{ \circ }W\)
- (b)
\(N74^{ \circ }W\)
- (c)
\(N66^{ \circ }W\)
- (d)
\(N74^{ \circ }E\)
A light house of 120 m height is just visible above the horizon from a ship. The correct distance (m) between the ship and the light house considering the combined correction for curvature and refraction is
- (a)
39.098
- (b)
42.226
- (c)
39.098
- (d)
42.226
The contour interval on a map is 15 m, If the upward gradient of 1 in 20 is required to be drawn between A and B will be
- (a)
240 m
- (b)
300 m
- (c)
450 m
- (d)
15 m
Which of the following errors can be eliminated by reciprocal measurements in differential levelling?
I. Error due to earth curvature.
II. Error due to atmospheric correction
- (a)
Both I and II
- (b)
only I
- (c)
Only II
- (d)
Neither I nor II
The local mean time at a place located in longitude \(90^{ \circ }40^{ ' }E\)when the standard time is 6h 30 min and the standard meridian is \(82^{ \circ }30^{ ' }E\) is
- (a)
5h 2 min 40 s
- (b)
5 h 47 min 20 s
- (c)
6 h 30 min
- (d)
7 h 2 min 40 s
The whole circle bearings of line OP and OQ are \({ 18 }^{ \circ }{ 15 }^{ ' }\)and \({ 335 }^{ \circ }{ 45 }^{ ' }\)respectively. What is the value of the included angle QOP?
- (a)
\(307^{ \circ }{ 30 }^{ ' }\)
- (b)
\(42^{ \circ }{ 30 }^{ ' }\)
- (c)
\(354^{ \circ }{ 00 }^{ ' }\)
- (d)
\(177^{ \circ }{ 00 }^{ ' }\)
What us the slope correction for a length of 30.0m along a gradient of 1 in 20?
- (a)
3.75 cm
- (b)
0.375 cm
- (c)
37.5 cm
- (d)
0.0375 cm
A 30 m metric chain is found to be 10 cm too short throughout a measurement. If the distance measured is recorded as 300m, what is the actual distance?
- (a)
300.1 m
- (b)
301.0m
- (c)
299.0 m
- (d)
310.0 m
How high should a helicopter pilot rise at a point A just to see the horizon at point B, if the distance AB is 40 km?
- (a)
101.75 m
- (b)
110.50 m
- (c)
107.75 m
- (d)
105.50 m
If the declination is \({ 5 }^{ \circ }{40 }^{ ' }W\), which one of the following magnetic bearing would represent the true bearing of \(S{ 25 }^{ \circ }{ 20 }^{ ' }E\)?
- (a)
\(S{19 }^{ \circ }{ 20 }^{ ' }E\)
- (b)
\(S{31 }^{ \circ }{ 0 }^{ ' }E\)
- (c)
\(S{19 }^{ \circ }{ 20 }^{ ' }W\)
- (d)
\(S{29 }^{ \circ }{ 0 }^{ ' }E\)
A bench mark has been established at the soffit of an ornamental arch at the known elevation of 100.0 m above mean sea level. The back sight used to establish height of instrument is an inverted staff reading of 2.105m. A forward sight reading with normally held staff of 1.105 m is taken on a recently constructed plinth. The elevation of the plinth is
- (a)
103.210 m
- (b)
101.000 m
- (c)
99.000 mm
- (d)
96.790 m
The magnetic bearing of a line AB was N \({ 59 }^{ \circ }{ 30 }^{ ' }\)W in the year 1967, when the declination was \({ 4 }^{ \circ }{ 10 }^{ ' }E\), If the present declination is \({ 3 }^{ \circ }W\), the whole circle bearing of the line is
- (a)
\({ 299}^{ \circ }{ 20 }^{ ' }\)
- (b)
\({ 307 }^{ \circ }{ 40 }^{ ' }\)
- (c)
\({ 293 }^{ \circ }{ 20 }^{ ' }\)
- (d)
\({ 301 }^{ \circ }{ 40 }^{ ' }\)
The length and bearings of a closed traverse PQRSP are given below
Line | Length(m) | Bearing(WLB) |
PQ | 200 | \({ 0 }^{ \circ }\) |
QR | 1000 | \({ 45 }^{ \circ }\) |
RS | 907 | \({ 180 }^{ \circ }\) |
SP | ? | ? |
The missing length and bearing, respectively of the line SP are
- (a)
207m and \({ 270 }^{ \circ }\)
- (b)
707 m and \({ 270 }^{ \circ }\)
- (c)
707 m and \({ 180 }^{ \circ }\)
- (d)
907m and \({ 270 }^{ \circ }\)
The plan of a map was photo copied to a reduced size such that a line originally 100 mm, measure 90 mm. the original scale of the plan was 1:1000. The revised scale is
- (a)
1:900
- (b)
1:1111
- (c)
1:1121
- (d)
1:1221
The following table gives data of consecutive coordinates in respect of a closed theodolite traverse PQESP.
Station |
Northing(m) |
Southing(m) |
Easting(m) | Westing(m) |
P | 400.75 | 300.5 | ||
Q | 100.25 | 199.25 | ||
R | 199.0 | 399.75 | ||
S | 300.0 | 300.5 |
The magnitude and direction of error of closure in whole circle bearing are
- (a)
2.0 m and \({ 45 }^{ \circ }\)
- (b)
2.0 m and \({ 315 }^{ \circ }\)
- (c)
2.82 m and \({ 315 }^{ \circ }\)
- (d)
3.42 m and \({ 45 }^{ \circ }\)
Two straight lines intersect at angle of \({ 60 }^{ \circ }\). The radius of curve-joining the two straight lines is 600 m. The length of long chord and mid ordinates in metre of the curve are
- (a)
80.4,600.0
- (b)
600.0,80.4
- (c)
600.0,39.89
- (d)
49.89,300.0
The magnitude bearing of a line AB is S \(45^{ \circ }E\)and the declination is \({ 5 }^{ \circ }\)west. The true bearing of the line AB is
- (a)
\(S\quad { 45 }^{ \circ }E\)
- (b)
\(S\quad { 40 }^{ \circ }E\)
- (c)
\(S\quad { 50 }^{ \circ }E\)
- (d)
\(S\quad { 50 }^{ \circ }W\)
The observed magnetic bearing of a line OE was found to be \(1{ 85 }^{ \circ }\). It was later discovered that station O had a local attraction of \(+{1.5 }^{ \circ }\) . The true bearing of the line OE, considering the magnetic declination of \({ 3.5 }^{ \circ }E\) shall be
- (a)
\({ 180 }^{ \circ }\)
- (b)
\({ 187 }^{ \circ }\)
- (c)
\({ 190 }^{ \circ }\)
- (d)
\({ 193 }^{ \circ }\)
A Bench Mark (BM) with Reduced Level (RL)=155.305 m has been established at the floor of room. It is required to find out the RL of underside of the roof(R) of the room using spirit levelling. The Back Sight (BS) to the BM has been observed as 1.500 m where as the ForeSight(FS) to R has been observed as 0.575 m(staff held inverted). The RL(m) of R will be
- (a)
155.880
- (b)
156.230
- (c)
157.380
- (d)
157.860
The following readings were taken with a dumpy level and a 4m levelling staff on a continuously sloping ground at 30 m intervals 0.680m, 1.455m, 1.855m, 2.330m, 2.885m, 3.380m, 1.055m. The RL of the fourth point was 79.100 m. The RL if the point that was read 0.680 m is
- (a)
80.750 m
- (b)
79.780 m
- (c)
78.420 m
- (d)
77.740 m
A level when set up 25 m from peg A and 50 m from peg B reads 2.847m on staff held on A and 3.462 m on staff held on B keeping bubble at its centre while reading. If the reduced levels of A and B are 283.665 m and 284.295 m respectively, what is the collinmation error per 100 m?
- (a)
0.015 m
- (b)
0.030 m
- (c)
0.045 m
- (d)
0.060 m
A sailor, standing on the deck of a ship, just sees the light beam from a light house on the shore. If the height of the sailor's eye and the light beam at the light house, above sea level are 9m and 25m respectively, what is the distance between the sailor and the light house?
- (a)
29.8 km
- (b)
31.1 km
- (c)
31.9 km
- (d)
33.2 km
he observation from a closed-loop traverse around a obstacle are
Segment | Observation from station | Length(m) | Azimuth(Clockwise from magnetic north) |
PQ | P | missing | \({ 33.7500 }^{ \circ }\) |
QR | Q | 300.000 | \({ 86.3847 }^{ \circ }\) |
RS | R | 354.524 | \({169.3819 }^{ \circ }\) |
ST | S | 450.000 | \({ 243.9003 }^{ \circ }\) |
TP | T | 268.000 | \({ 317.5000 }^{ \circ }\) |
What is the value of the missing measurement (rounded off to nearest 10mm)?
- (a)
396.86 m
- (b)
396.79 m
- (c)
396.05 m
- (d)
396.94 m