Surveying Mcqs

Practice Quiz On Surveying Mcqs

30 Marks

1 / 30

In tangential tacheometry, an ordinary level staff is used

leaning towards the instrument for inclined sights upward

leaning away from the instrument for inclined sights downwards

vertical in all cases

none of these

2 / 30

The ratio of the distances at which a stated length can be distinguished by the telescope and the human eye, respectively, is called

brightness of telescope

magnification of telescope

resolving power of telescope

none of these

3 / 30

The method of finding out the difference in elevation between two points for eliminating the effect of curvature and refraction, is

reciprocal levelling

precise levelling

differential levelling

flying levelling

4 / 30

The power of a lens

is reciprocal of its focal length

is positive if it is a convex lens

is negative if it is a concave lens

is measured in diopter

5 / 30

The most reliable method of plotting a theodolite traverse, is

by consecutive co-ordinates of each station

by independent co-ordinates of each station

by plotting included angles and scaling off each traverse leg

by the tangent method of plotting

6 / 30

An imaginary line lying throughout on the surface of the earth and preserving a constant inclination to the horizontal, is called

contour line

contour gradient

level line

line of gentle scope

7 / 30

Orientation of a plane table by solving two point problem is only adopted when

saving of time is a main factor

better accuracy is a main factor

given points are inaccessible

none of these

8 / 30

Profile levelling is usually done for determining

contours of an area

capacity of a reservoir

elevations along a straight line

boundaries of property

9 / 30

Grid lines are parallel to

magnetic meridian of the central point of the grid

line representing the central true meridian of the grid

geographical equator

none of these

10 / 30

For preparation of a contour plan for a route survey

method of squares is used

method of trace contour is used

method of cross profile is used

indirect method of contouring is used

11 / 30

The intercept of a staff

is maximum if the staff is held truly normal to the line of sight

is minimum if the staff is held truly normal to the line of sight

decreases if the staff is tilted away from normal

increases if the staff is tilted towards normal

12 / 30

The length of a traverse leg may be obtained by multiplying the latitude and

secant of its reduced bearing

sine of its reduced bearing

cosine of its reduced bearing

tangent of its reduced bearing

13 / 30

The apparent error on reversal is

equal to the actual error

twice the actual error

thrice the actual error

none of these

14 / 30

Pick up the correct statement from the following :

the diaphragm plays no part in defining the line of sight

the eyepiece plays no part in defining the line of sight

the optical centre of the objective plays no part in defining the line of sight

none of these

15 / 30

An internal focussing type surveying telescope, may be focussed by the movement of

objective glass of the telescope

convex-lens in the telescope

concave lens in the telescope

plano-convex lens in the telescope

16 / 30

The boundary of water of a still lake, represents

level surface

horizontal surface

contour line

a concave surface

17 / 30

The chord of a curve less than peg interval, is known as

small chord

sub-chord

normal chord

short chord

18 / 30

The limiting length of an offset does not depend upon

accuracy of the work

method of setting out perpendiculars

scale of plotting

indefinite features to be surveyed

19 / 30

The ratio of the angles subtended at the eye, by the virtual image and the object, is known as telescope's

resolving power

brightness

field of view

magnification

20 / 30

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/10

R/15

R/20

R/25

21 / 30

Prolongation of chain line across an obstruction in chain surveying, is done by

making angular measurements

drawing perpendiculars with a chain

solution of triangles

all the above

22 / 30

Perpendicular offset from a tangent to the junction of a transition curve and circular curve is equal to

shift

twice the shift

thrice the shift

four times the shift

23 / 30

The radius of curvature of the arc of the bubble tube is generally kept

10 m

25 m

50 m

100 m

24 / 30

Perpendicularity of an offset may be judged by eye, if the length of the offset is

5 m

10 m

15 m

20 m

25 / 30

In horizontal angles, the error due to imperfect levelling of the plate bubble is

large when sights are nearly level

large for long sights

less for steeply inclined sights

large for steeply inclined sights

26 / 30

Diopter is the power of a lens having a focal length of

25 cm

50 cm

75 cm

100 cm

27 / 30

Greater accuracy in linear measurements, is obtained by

tacheometry

direct chaining

direct taping

all the above

28 / 30

Number of subdivisions per metre length of a levelling staff is

100

200

500

1000

29 / 30

The best method of interpolation of contours, is by

estimation

graphical means

computation

all of these

30 / 30

You have to observe an included angle with better accuracy than what is achievable by a vernier, you will prefer the method of

repetition

reiteration

double observations

exactness

Your score is

The most reliable method of plotting a theodolite traverse, is

A) by consecutive co-ordinates of each station

B) by independent co-ordinates of each station

C) by plotting included angles and scaling off each traverse leg

D) by the tangent method of plotting

B) by independent co-ordinates of each station

The intercept of a staff

A) is maximum if the staff is held truly normal to the line of sight

B) is minimum if the staff is held truly normal to the line of sight

C) decreases if the staff is tilted away from normal

D) increases if the staff is tilted towards normal

B) is minimum if the staff is held truly normal to the line of sight

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.

A) R/10

B) R/15

C) R/20

D) R/25

C) R/20

The limiting length of an offset does not depend upon

A) accuracy of the work

B) method of setting out perpendiculars

C) scale of plotting

D) indefinite features to be surveyed

Orientation of a plane table by solving two point problem is only adopted when

A) saving of time is a main factor

B) better accuracy is a main factor

C) given points are inaccessible

D) none of these

C) given points are inaccessible

The radius of curvature of the arc of the bubble tube is generally kept

A) 10 m

B) 25 m

C) 50 m

D) 100 m

Pick up the correct statement from the following :

A) the diaphragm plays no part in defining the line of sight

B) the eyepiece plays no part in defining the line of sight

C) the optical centre of the objective plays no part in defining the line of sight

D) none of these

B) the eyepiece plays no part in defining the line of sight

The ratio of the angles subtended at the eye, by the virtual image and the object, is known as telescope’s

A) resolving power

B) brightness

C) field of view

D) magnification

The best method of interpolation of contours, is by

A) estimation

B) graphical means

C) computation

D) all of these

C) computation

Diopter is the power of a lens having a focal length of

A) 25 cm

B) 50 cm

C) 75 cm

D) 100 cm

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