Surveying Set 11 MCQs

Q1 | A tie line in a chain surveying

checks the accuracy of the framework

enables the surveyor to locate the interior details which are far away from the main chain lines

fixes up the directions of all other lines

all of the above

Q2 | Generally, the deflection angle is measured twice, once with the telescope normal and once with the telescope reversed.

TRUE

FALSE

Q3 | Contour lines cross ridge or valley lines at

30?

45?

60?

90?

Q4 | The instrument used for setting out an offset at a right angle, is called

open cross-staff

french cross-staff

adjustable cross-staff

optical square

Q5 | The fundamental principle of surveying is to work from the

whole to the part

part to the whole

lower level to higher level

higher level to lower level

Q6 | In levelling, the effect of refraction may be taken as

one-half

one-third

one-fifth

one-seventh

Q7 | The latitude of a traverse line is obtained by multiplying its length with the cosine of its reduced bearing.

Correct

Incorrect

Q8 | In a whole circle system, the bearing of a line is measured

always clockwise from the south point of the reference meridian towards the line right round the circle

clockwise or anticlockwise from the east or west whichever is nearer the line towards north or south

clockwise or anticlockwise from the north or south whichever is nearer the line towards east or west

none of the above

Q9 | The horizontal angle between the true meridian and magnetic meridian is known as

true bearing

dip

local attraction

magnetic declination

Q10 | If the fore bearing of a line is

36? 15'

126? 15'

143? 45'

216? 15'

Q11 | When the magnetic bearing of the sun at noon is 185? 20', the magnetic declination will be

5? 20' east

5? 20' west

5? 20' north

5? 20' south

Q12 | The optical square is used to measure angles by

refraction

reflection

double refraction

double reflection

Q13 | The multiplying constant for the tacheometer is, generally, kept as

20

40

60

100

Q14 | The projection of a traverse line on a line parallel to the meridian is known as

latitude

departure

bearing

Q15 | Direct ranging is possible only when the end stations are

close to each other

not more than 100 m apart

mutually intervisible

located at highest points in the sea

Q16 | The index glass in an optical square is

wholly silvered

wholly unsilvered

one-fourth silvered and three-fourth unsilvered

half silvered and half unsilvered

Q17 | The method of intersection in plane tabling is commonly used for

locating the distant and inaccessible points

locating the broken boundaries

locating the points which may be used subsequently as the instrument stations

all of the above

Q18 | A scale which has a common representative fraction, but read in different measures, is called a

plain scale

diagonal scale

shrunk scale

comparative scale

Q19 | When the position of a point is to be fixed most accurately, it should be located by oblique offsets.

TRUE

FALSE

Q20 | In levelling, the correction for combined curvature and refraction (in metres) is equal to

0.00785 D2

0.0785 D2

0.0112 D2

0.0673 D2

Q21 | In locating the details of inaccessible objects visible atleast from transit stations, the method used is

by angles and distances from the same station

by angle from one station and distance from the other station

by distances from two different stations

none of the above

Q22 | In geodetic surveying, the curvature of the earth is taken into consideration.

Agree

Disagree

Q23 | The height of instrument is the height of the centre of the telescope above the ground where the level is set up.

TRUE

FALSE

Q24 | When the image formed by the objective is not situated in the plane of cross-hairs,

the cross-hairs should be adjusted

the eye-piece should be focussed

the objective should be focussed

the parallex should be removed

Q25 | The magnitude of super-elevation depends upon the speed of the vehicle and the radius of the curve

Correct

Incorrect