37 + Mcqs in Surveying and Geology Page 1 McqOptions

1.	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
A.	30 m
B.	25 m
C.	20 m
D.	15 m
Answer» C. 20 m

Discussion

2.	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
A.	90°
B.	120°
C.	210°
D.	270°
Answer» D. 270°

Discussion

3.	For true difference in elevations between two points A and B, the level must be set up
A.	at any point between A and B
B.	at the exact mid point of A and B
C.	near the point A
D.	near the point B.
Answer» C. near the point A

Discussion

4.	The sensitiveness of a level tube decreases if
A.	radius of curvature of its inner surface is increased
B.	diameter of the tube is increased
C.	length of the vapour bubble is increased
D.	both viscosity and surface tension are increased.
Answer» E.

Discussion

5.	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.
Answer» D. R/25.

Discussion

6.	The main principle of surveying is to work
A.	from part to the whole
B.	from whole to the part
C.	from higher level to the lower level
D.	from lower level to higher level.
Answer» C. from higher level to the lower level

Discussion

7.	The slope correction for a length of 30 m along a gradient of 1 in 20, is
A.	3.75 cm
B.	0.375 cm
C.	37.5 cm
D.	2.75 cm.
Answer» B. 0.375 cm

Discussion

8.	For a closed traverse the omitted measurements may be calculated
A.	length of one side only
B.	bearing of one side only
C.	both length and bearing of one side
D.	all the above.
Answer» E.

Discussion

9.	The bearings of the lines AB and BC are 146° 30' and 68° 30'. The included angle ABC is
A.	102°
B.	78°
C.	45°
D.	none of these.
Answer» B. 78°

Discussion

10.	Offsets are measured with an accuracy of 1 in 40. If the point on the paper from both sources of error (due to angular and measurement errors) is not to exceed 0.05 cm on a scale of 1 cm = 20 m, the maximum length of offset should be limited to
A.	14.14
B.	28.28 m
C.	200 m
D.	none of these.
Answer» C. 200 m

Discussion

11.	The difference of level between a point below the plane of sight and one above, is the sum of two staff readings and an error would be produced equal to
A.	the distance between the zero of gradient and the foot of the staff
B.	twice the distance between the zero of graduation and the foot of the staff
C.	twice the distance between the zero of graduation and the foot of the staff
D.	none of the above.
Answer» C. twice the distance between the zero of graduation and the foot of the staff

Discussion

12.	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.
Answer» C. by plotting included angles and scaling off each traverse leg

Discussion

13.	True meridians are generally preferred to magnetic meridians because
A.	these converge to a point
B.	these change due to change in time
C.	these remain constant.
D.	None of these.
Answer» D. None of these.

Discussion

14.	A bearing of a line is also known as
A.	magnetic bearing
B.	true bearing
C.	azimuth
D.	reduced bearing
Answer» C. azimuth

Discussion

15.	Accuracy of 'fix' by two point problem, is
A.	bad
B.	good
C.	not reliable
D.	unique.
Answer» D. unique.

Discussion

16.	While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is
A.	correctly focussed
B.	not correctly focussed
C.	said to have parallax
D.	free from parallax.
Answer» D. free from parallax.

Discussion

17.	Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following
A.	chain surveying
B.	compass surveying
C.	plan table surveying
D.	tacheometric surveying.
Answer» D. tacheometric surveying.

Discussion

18.	In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by
A.	adding 180°, if the given bearing is less than 180°
B.	subtracting 180°, if the given bearing, is more than 180°
C.	changing the cardinal points, i.e. substituting N for S and E for W and vice-versa
D.	none of these.
Answer» D. none of these.

Discussion

19.	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.
Answer» E.

Discussion

20.	One of the tacheometric constants is additive, the other constant, is
A.	subtractive constant
B.	multiplying constant
C.	dividing constant
D.	indicative constant.
Answer» C. dividing constant

Discussion

21.	Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm focal length. The focal length of the combination is
A.	10 cm
B.	20 cm
C.	30 cm
D.	40 cm
Answer» D. 40 cm

Discussion

22.	In chain surveying field work is limited to
A.	linear measurements only
B.	angular measurements only
C.	both linear and angular measurements
D.	all the above.
Answer» B. angular measurements only

Discussion

23.	The 'fix' of a plane table station with three known points, is bad if the plane table station lies
A.	in the great triangle
B.	outside the great triangle
C.	on the circumference of the circumscribing circle
D.	none of these.
Answer» D. none of these.

Discussion

24.	An imaginary line joining the points of equal elevation on the surface of the earth, represents
A.	contour surface
B.	contour gradient
C.	contour line
D.	level line
Answer» D. level line

Discussion

25.	Diopter is the power of a lens having a focal length of
A.	25 cm
B.	50 cm
C.	75 cm
D.	100 cm
Answer» E.

Discussion

26.	Closed contours of decreasing values towards their centre, represent
A.	a hill
B.	a depression
C.	a saddle or pass
D.	a river bed.
Answer» C. a saddle or pass

Discussion

27.	The accuracy of measurement in chain surveying, does not depend upon
A.	length of the offset
B.	scale of the plotting
C.	importance of the features
D.	general layout of the chain lines.
Answer» E.

Discussion

28.	One of the Lehmann's rules of plane tabling, is
A.	location of the instrument station is always distant from each of the three rays from the known points in proportion to their distances
B.	when looking in the direction of each of the given points, the instrument station will be on the right side of one and left side of the other ray
C.	when the instrument station is outside the circumscribing circle its location is always on the opposite side of the ray to the most distant point as the inter-section of the other two rays
D.	none of these.
Answer» B. when looking in the direction of each of the given points, the instrument station will be on the right side of one and left side of the other ray

Discussion

29.	Pick up the correct statement from the following :
A.	the tangent screw enables to give small movement under conditions of smooth and positive control
B.	standing on the tripod is the levelling head or trib arch
C.	the levelling screws are used to tilt the instrument so that its rotation axis is truly vertical
D.	all the above.
Answer» E.

Discussion

30.	In chain surveying tie lines are primarily provided
A.	to check the accuracy of the survey
B.	to take offsets for detail survey
C.	to avoid long offsets from chain lines
D.	to increase the number of chain lines
Answer» D. to increase the number of chain lines

Discussion

31.	The real image of an object formed by the objective, must lie
A.	in the plane of cross hairs
B.	at the centre of the telescope
C.	at the optical centre of the eye-piece
D.	anywhere inside the telescope.
Answer» B. at the centre of the telescope

Discussion

32.	If S is the length of a subchord and R is the radius of simple curve, the angle of deflection between its tangent and sub-chord, in minutes, is equal to
A.	573 S/R
B.	573 R/S
C.	171.9 S/R
D.	1718.9 S/R.
Answer» E.

Discussion

33.	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
Answer» E.

Discussion

34.	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.
Answer» C. decreases if the staff is tilted away from normal

Discussion

35.	Pick up the correct statement from the following :
A.	the eyepiece plays no part in defining the line of sight
B.	the diaphragm 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.
Answer» B. the diaphragm plays no part in defining the line of sight

Discussion

36.	An ideal vertical curve to join two gradients, is
A.	circular
B.	parabolic
C.	elliptical
D.	hyperbolic
Answer» C. elliptical

Discussion

37.	Hydrographic surveys deal with the mapping of
A.	large water bodies
B.	heavenly bodies
C.	mountaineous region
D.	canal system
Answer» B. heavenly bodies

Discussion

Explore topic-wise MCQs in ENGINEERING SERVICES EXAMINATION (ESE).

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The&nbsp;intercept&nbsp;of&nbsp;a&nbsp;staff

Pick&nbsp;up&nbsp;the&nbsp;correct&nbsp;statement&nbsp;from&nbsp;the&nbsp;following&nbsp;:

An&nbsp;ideal&nbsp;vertical&nbsp;curve&nbsp;to&nbsp;join&nbsp;two&nbsp;gradients,&nbsp;is

Hydrographic&nbsp;surveys&nbsp;deal&nbsp;with&nbsp;the&nbsp;mapping&nbsp;of

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

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

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

The sensitiveness of a level tube decreases if

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

The main principle of surveying is to work

The slope correction for a length of 30 m along a gradient of 1 in 20, is

For a closed traverse the omitted measurements may be calculated

The bearings of the lines AB and BC are 146° 30' and 68° 30'. The included angle ABC is

The difference of level between a point below the plane of sight and one above, is the sum of two staff readings and an error would be produced equal to

The most reliable method of plotting a theodolite traverse, is

True meridians are generally preferred to magnetic meridians because

A bearing of a line is also known as

Accuracy of 'fix' by two point problem, is

Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following

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

The limiting length of an offset does not depend upon

One of the tacheometric constants is additive, the other constant, is

Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm focal length. The focal length of the combination is

In chain surveying field work is limited to

The 'fix' of a plane table station with three known points, is bad if the plane table station lies

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

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

Closed contours of decreasing values towards their centre, represent

The accuracy of measurement in chain surveying, does not depend upon

One of the Lehmann's rules of plane tabling, is

Pick up the correct statement from the following :

In chain surveying tie lines are primarily provided

The real image of an object formed by the objective, must lie

If S is the length of a subchord and R is the radius of simple curve, the angle of deflection between its tangent and sub-chord, in minutes, is equal to

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

The intercept of a staff

Pick up the correct statement from the following :

An ideal vertical curve to join two gradients, is

Hydrographic surveys deal with the mapping of