A

ABCD is a rectangular plot of land. If the bearing of the side AB is 75°, the bearing of DC is75°

A level cannot be used forVertical Angles

Alidade is used inPlane Tabling

A'level line'is aline parallel to the mean spheriodal surface of earth

As applied to staff readings, the corrections for curvature and refraction are respectively The above table shows a part of a level field book. The value of X should be100.00

A contour interval is the difference in elevation between one contour line and the next.

A scale of 1:1000 on a topo map indicates that1 unit on the map equals 1000 units in the real world

A set of circles inside circles on a topo map indicate ahill

An airplane takes off from a location at 17°S latitude and flies to a new location 55° due north of its starting point. What latitude has the plane reached? 38°N

An angle of deflection right, may be directly obtained by setting the instrument to readzero on back station

A lemniscate curve will not be transitional throughout, if its deflection angle, is 45°

Aim/Advantage of working from whole to part isErrors are reduced

An ideal vertical curve to join two gradients, isparabolic

An imaginary line joining the points of equal elevation on the surface of the earth, representscontour line

Accuracy of 'fix' by two point problem, isnot reliable

A bearing of a line is also known astrue bearing

ABCD is a regular parallelogram plot of land whose angle BAD is 60°. If the bearing of the line AB is 30°, the bearing of CD, is 210°

An oblate ellipsoid is what? a circle rotated about its major axis

A line connecting points of equal precipitation is an isohyet

A negative declination shows that the magnetic meridian is to the western side of the true meridian

A metallic tape is made ofcloth and wires

A telescope is said to be inverted if its vertical circle is to its right and the bubble of the telescope is down

Agate head is fitted with aprismatic compass

A series of closely spaced contour lines represents asteep slope

A negative declination shows that the magnetic meridian is to thewestern side of the true meridian

A level line is a line parallel to the mean spheroidal surface of the earth

An imaginary line lying througout the surface of ground and preserving a constant inclination to the horizontal is known as contour gradient

Agate cap is fitted with a prismatic compass

B

Benchmark is established by spirit levelling

Bowditch rule is applied to a closed traverse for adjustment of closing error

C

Closed contours of decreasing values towards their centre, represent

a depression

Calculate the gradient if the change in field value is equal to 100 m and the distance is equal to 50 km

2.0 m/km

Contour interval is

Inversely proportional to the scale of the map

Closed contours with higher value inwards represent a

hillock

Contour interval is

conversly proportional to the scale of the map

Contour interval is

the vertical distance between two consecutive contours

Cross staff is an instrument used for

setting out right angles

D

Different grades are joined together by a

Vertical curve

Dumpy level is most suitable when

many readings are to be taken from a single setting of the instrument

Detailed plotting is generally done by

radiation

Direct method of contouring is

most accurate method

Dumpy level is most suitable when

many readings are to be taken from a single setting of the instrument

F

For accurate work, the steel band should always be used in preference to chain because the steel band

Is practically inextensible and is not liable to kinks when in use

For a well-conditioned triangle, no angle should be less than

30 º

Find a bearing for line AB if it lies in the first quadrant

r=α

Find a bearing for line AB if it lies in the second quadrant

r=180°-α

Find a bearing for line AB if it lies in the third quadrant

r=α-180°

Find a bearing for line AB if it lies in the forth quadrant

r=360°-α

For a line AB

the forbearing of AB and back bearing of AB differ by 180

For accurate work, the steel band should always be used in preference to chain because the steel band

Is practically inextensible and is not liable to kinks when in

For taking offsets with an optical square on the right hand side of the chain line, it is held

by left hand upright use

For a closed traverse the omitted measurements may be calculated

all the above

For which of the following permanent adjustments of theodolite, the spire test is used ?

adjustment of horizontal axis

For true difference in elevations between two points A and B, the level must be set up

at the exact midpoint of A and B

For a line AB

the forebearing of AB and back bearing of AB differ by 180

For the construction of highway (or railway)

both longitudinal and cross sections are required

H

Height of instrument method of levelling is

quicker and less tedious for large number of intermediate sights

How would a sink hole be identified on a topo map?

by contour lines with hachures

How are streams indicated on a topographic map?

by contour lines that form v's which point upstream

How many 7.5 minute quadrangles occur within a 15 minute sheet?

4

How many meters are there in one cm on a map if the scale is 1:24000?

240

How many meters are there in 2 cm on a map if the scale is 1:15000?

300

How are latitude and longitude lines drawn on a globe of Earth?

Latitude lines are parallel and longitude lines meet at the poles.

Height of the instrument method of levelling is

quicker and less tedious for large number of intermediate sights

Hydrographic surveys deal with the mapping of

large water bodies

I

If h is the difference in level between end points separated by l, then the slope correction is h2:2l+h4:8/3 . The second term may be neglected if the value of h in a 20 m distance is less than

3 m

If arithmetic sum of latitudes of a closed traverse is ∑Lat and closing error in latitude is dx, the correction for a side whose latitude is l, as given by Transit Rule, is

lx dx:E Lat

If a 30 m chain diverges through a perpendicular distance d from its correct alignment, the error in length, is

d2:60 x m

If θ is the vertical angle of an inclined sight, δ is the angle of tilt of the staff, the error

E= -1 cos (O+-b):cos O

If L is the perimeter of a closed traverse, ΔD is the closing error in departure, the correction for the departure of a traverse side of length l, according to Bowditch rule, is

treygD x l:L

In traverse computations, the sum of angles in closed figures equals which of the following? (number of sides is 4)

360 º

International date line is located along

180° longitude

In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by

changing the cardinal points, i.e. substituting N for S and E for W and vice-versa

In chain surveying field work is limited to

linear measurements only

In chain surveying tie lines are primarily provided

to avoid long offsets from chain lines

In traverse computations, the sum of angles in closed figures equals which of the following? ( Assume n=number of sides)

(n-2)*180

In a lemniscate curve the ratio of the angle between the tangent at the end of the polar ray and the straight, and the angle between the polar ray and the straight, is

3/2

If the azimuth of line AB is 84 degrees what is the bearing?

84NE

In levelling operation,

The line commences with a back sight and closes with a foresight.

If the whole circle bearing of a line is 270°, its reduced bearing is

W 90°

If the declination of the needle is 10° W

all

If the magnetic declination is properly adjusted, then when the compass needle reads zero degrees, the sighting arm points in what direction?

North

Is magnetic North a stationary fixed point on the globe?

No, magnetic North is constantly moving.

If the contour interval on a topo map is 10 meters, and one contour line is labeled 50 m

the adjacent contour line would represent 60 m in elevation

In the cross-section method of indirect contouring, the spacing of cross-sections depends upon i) contour interval ii) scale of plan iii) characteristics of ground The correct answer is

(i), (ii) and (iii)

If the staff is not held vertical at a levelling station, the reduced level calculated from the observation would be

less than true R.L.

In the prismatic compass

the magnetic needle and graduated circle do not move with the box

If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167 º, the magnetic declination at that place is

13 º E

In an internal focussing type of telescope, the lens provided is

Concave

If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is

99.345 m

In the double application of principle of reversion, the apparent error is

four times the true error

If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will

Increase

If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to i) altitude bubble on index frame ii) altitude bubble on index frame if it is to be used as a level iii) altitude bubble on telescope iv) altitude bubble on telescope if it is to be used as a level The correct answer is

both (i) and (iv)

If the length of a chain is found to be short on testing, it can be adjusted by

straightening the links

If the true bearing of a line AB is 269 º 30', then the azimuth of the line AB is

90 º 30'

In the quadrantal bearing system, a whole circle bearing of 293 º 30' can be expressed as

NW 66 º 30'

In traverse computations, the sum of angles in closed figures equals which of the following? (number of sides is 6)

720

If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of chords produced, should not exceed.

R/20

If θ is the slope of the ground and l is the measured distance, the correction is

2l sin2 θ/2

K

Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 in 10, the sight on the down-slope, must be less than 25 m

L

Local attraction in compass surveying may exist due to

presence of magnetic substances near the instrument

Latitude of a place is the angular distance from

none of these.

Lines connecting points of equal air temperature are known as