The index glass in an optical square is

one-fourth silvered and three-fourth unsilvered

half silvered and half unsilvered

The method of intersection in plane tabling is commonly used for

locating the distant and inaccessible points

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

Direct ranging is possible only when the end stations are

located at highest points in the sea

247 + Mcqs in General in Surveying Page 1 McqOptions

1.	The difference between the sum of the angles of a apherical triangle on the earth's surface and the angles of the corresponding plane triangle for every 195.5 km2 of area is only
A.	1 second
B.	5 second
C.	10 second
D.	15 second
Answer» B. 5 second

Discussion

2.	A French cross-staff has a magnetic compass at the top.
A.	Right
B.	Wrong
Answer» C.

Discussion

3.	When a staff is sighted through the telescope, a certain length of staff is intercepted by the stadia lines. The staff intercept varies with the distance at which the staff is held.
A.	Yes
B.	No
Answer» B. No

Discussion

4.	It is required to find the difference in elevation between two points A and B. During levelling, it is found that the staff reading at B is more than the staff reading at A. It indicates that the point A is
A.	higher than
B.	lower than
Answer» B. lower than

Discussion

5.	The adjustable cross-staff is used for setting out an offset
A.	at an angle of 45?
B.	at an angle of 60?
C.	at a right angle
D.	at any angle
Answer» E.

Discussion

6.	When the effect of refraction is taken into account in levelling, the true staff reading is obtained by subtracting the correction for refraction from the observed staff reading.
A.	Right
B.	Wrong
Answer» C.

Discussion

7.	The correction to be applied to each 30 m chain for a line measured along a slope of ? is
A.	30 (1 - sin ?)
B.	30 (1 - cos ?)
C.	30 (1 - tan ?)
D.	30 (1 - cot ?)
Answer» C. 30 (1 - tan ?)

Discussion

8.	An open cross-staff is commonly used for setting out
A.	short offsets
B.	long offsets
C.	oblique offsets
D.	none of these
Answer» C. oblique offsets

Discussion

9.	The method of reiteration of measuring horizontal angles is generally preferred when several angles are to be measured at a particular station.
A.	Yes
B.	No
Answer» B. No

Discussion

10.	In levelling, the correction for combined curvature and refraction (in metres) is equal to
A.	0.00785 D2
B.	0.0785 D2
C.	0.0112 D2
D.	0.0673 D2
Answer» E.

Discussion

11.	The horizontal angle between the true meridian and magnetic meridian is known as
A.	true bearing
B.	dip
C.	local attraction
D.	magnetic declination
Answer» E.

Discussion

12.	In levelling, the correction for curvature (in metres) is equal, where D = Distance from the level to the staff reading in kilometres.
A.	0.00785 D2
B.	0.0785 D2
C.	0.0112 D2
D.	0.0673 D2
Answer» C. 0.0112 D2

Discussion

13.	When the magnetic declination is negative, the magnetic meridian is towards the west of true meridian.
A.	Correct
B.	Incorrect
Answer» B. Incorrect

Discussion

14.	When the magnetic declination is 5? 20' east, the magnetic bearing of the sun at noon will be
A.	95? 20'
B.	174? 40'
C.	185? 20'
D.	354? 40'
Answer» E.

Discussion

15.	Chain surveying consists of the arrangement of framework of triangles because a triangle is the only simple plane figure which can be plotted uniquely if
A.	three sides
B.	three angles
C.	one side and two angles
D.	one angle and two sides
Answer» B. three angles

Discussion

16.	When the magnetic bearing of the sun at noon is 185? 20', the magnetic declination will be
A.	5? 20' east
B.	5? 20' west
C.	5? 20' north
D.	5? 20' south
Answer» C. 5? 20' north

Discussion

17.	For accurate work, the lengths of back sight and fore sight are kept unequal.
A.	Agree
B.	Disagree
Answer» B. Disagree

Discussion

18.	The levelling should always commence from a temporary bench mak and end on a permanent bench mark.
A.	Correct
B.	Incorrect
Answer» C.

Discussion

19.	An imaginary line joining the point of intersection of the cross-hairs of the diaphragm and the optical centre of the object glass, is known as
A.	fundamental line
B.	axis of telescope
C.	axis of level tube
D.	line of collimation
Answer» E.

Discussion

20.	The optical square is used to measure angles by
A.	refraction
B.	reflection
C.	double refraction
D.	double reflection
Answer» C. double refraction

Discussion

21.	The deflection angle for any chord is equal to the deflection angle for the proceeding chord minus the tangential angle for that chord.
A.	Yes
B.	No
Answer» C.

Discussion

22.	An optical square is used for the same purpose as the cross-staff, but it is more accurate.
A.	Yes
B.	No
Answer» B. No

Discussion

23.	The index glass in an optical square is
A.	wholly silvered
B.	wholly unsilvered
C.	one-fourth silvered and three-fourth unsilvered
D.	half silvered and half unsilvered
Answer» B. wholly unsilvered

Discussion

24.	The methods used for locating the plane table stations are
A.	(i) and (ii)
B.	(iii) and (iv)
C.	(ii) and (iv)
D.	(i) and (iii)
Answer» D. (i) and (iii)

Discussion

25.	In an optical square, the angle between the first incident ray and the last reflected ray is
A.	60?
B.	90?
C.	120?
D.	150?
Answer» C. 120?

Discussion

26.	The angle of intersection of the horizon glass and index glass in an optical square is
A.	30?
B.	45?
C.	60?
D.	75?
Answer» C. 60?

Discussion

27.	The method of intersection in plane tabling is commonly used for
A.	locating the distant and inaccessible points
B.	locating the broken boundaries
C.	locating the points which may be used subsequently as the instrument stations
D.	all of the above
Answer» E.

Discussion

28.	If the fore bearing of a line is N 26? 35' W, its back bearing will be
A.	S 26? 35' E
B.	S 26? 35' W
C.	N 26? 35' E
D.	N 53? 25' W
Answer» B. S 26? 35' W

Discussion

29.	The magnetic bearing of a line is 55? 30v and the magnetic declination is 4? 30' west. The true bearing of a line will be
A.	30?
B.	34? 30
C.	49?
D.	51?
Answer» E.

Discussion

30.	The magnetic bearing of a line is S 35? 30' E and the magnetic declination is 4? 10' east. The true bearing of a line will be
A.	S 31? 30' E
B.	S 31? 30' W
C.	S 39? 50' E
D.	S 38? 50' W
Answer» B. S 31? 30' W

Discussion

31.	A metallic tape is made of an alloy of nickel and steel.
A.	True
B.	False
Answer» C.

Discussion

32.	An invar tape is generally used for accurate measurement of distance because it possesses
A.	zero
B.	low
C.	high
Answer» C. high

Discussion

33.	If a chain is used at a temperature at which it was calibrated, the error in measured length is positive.
A.	equal to
B.	lower than
C.	higher than
Answer» C. higher than

Discussion

34.	In tachcometric method of setting out a curve, no chain or tape is used.
A.	True
B.	False
Answer» B. False

Discussion

35.	An angle made by a survey line with the prolongation of the proceeding line, is known as
A.	direct angle
B.	vertical angle
C.	horizontal angle
D.	deflection angle
Answer» E.

Discussion

36.	The correction to the measured length will be negative when the chain is held on the ground sloping upwards.
A.	Yes
B.	No
Answer» B. No

Discussion

37.	When (h) is the difference in heights between the extremities of a chain length (l), then the correction for slope required is
A.	h / l
B.	h2 / l
C.	h2 / 2l
D.	h / el
Answer» D. h / el

Discussion

38.	The error in measured length due to sag of chain or tape is known as
A.	positive error
B.	negative error
C.	compensating error
D.	instrumental error
Answer» B. negative error

Discussion

39.	The error in measured length due to incorrect holding of chain is
A.	compensating error
B.	cumulative error
C.	instrumental error
D.	negative error
Answer» B. cumulative error

Discussion

40.	When the length of chain used in measuring distance is shorter than the standard length, the error in measured distance will be compensating error.
A.	Right
B.	Wrong
Answer» C.

Discussion

41.	When the latitudes and departures are so adjusted that the algebraic sum of the latitudes and departures are equal to zero, the operation is called
A.	balancing the latitude
B.	balancing the departure
C.	balancing the traverse
D.	none of these
Answer» D. none of these

Discussion

42.	A line normal to the plumb line at all points is known as
A.	horizontal line
B.	vertical line
C.	level line
D.	line of collimation
Answer» D. line of collimation

Discussion

43.	A vertical line at any point is a line normal to the level surface at the point.
A.	Yes
B.	No
Answer» B. No

Discussion

44.	A surface which is normal to the direction of gravity at all points, as indicated by a plumb line, is known as
A.	datum surface
B.	leverl surface
C.	horizontal surface
D.	vertical surface
Answer» C. horizontal surface

Discussion

45.	The method of levelling in which the heights of mountains are found by observing the temperature at which water boils is known as
A.	barometric levelling
B.	reciprocal levelling
C.	longitudinal levelling
D.	hypometry
Answer» E.

Discussion

46.	Generally, the deflection angle is measured twice, once with the telescope normal and once with the telescope reversed.
A.	True
B.	False
Answer» B. False

Discussion

47.	In geodetic surveying, the curvature of the earth is taken into consideration.
A.	Agree
B.	Disagree
Answer» B. Disagree

Discussion

48.	Direct ranging is possible only when the end stations are
A.	close to each other
B.	not more than 100 m apart
C.	mutually intervisible
D.	located at highest points in the sea
Answer» D. located at highest points in the sea

Discussion

49.	The multiplying constant for the tacheometer is, generally, kept as
A.	20
B.	40
C.	60
D.	100
Answer» E.

Discussion

50.	The magnitude of super-elevation depends upon the speed of the vehicle and the radius of the curve
A.	Correct
B.	Incorrect
Answer» B. Incorrect

Discussion

Explore topic-wise MCQs in Surveying.

The difference between the sum of the angles of a apherical triangle on the earth's surface and the angles of the corresponding plane triangle for every 195.5 km2 of area is only

A French cross-staff has a magnetic compass at the top.

When a staff is sighted through the telescope, a certain length of staff is intercepted by the stadia lines. The staff intercept varies with the distance at which the staff is held.

It is required to find the difference in elevation between two points A and B. During levelling, it is found that the staff reading at B is more than the staff reading at A. It indicates that the point A is

The adjustable cross-staff is used for setting out an offset

When the effect of refraction is taken into account in levelling, the true staff reading is obtained by subtracting the correction for refraction from the observed staff reading.

The correction to be applied to each 30 m chain for a line measured along a slope of ? is

An open cross-staff is commonly used for setting out

The method of reiteration of measuring horizontal angles is generally preferred when several angles are to be measured at a particular station.

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

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

In levelling, the correction for curvature (in metres) is equal, where D = Distance from the level to the staff reading in kilometres.

When the magnetic declination is negative, the magnetic meridian is towards the west of true meridian.

When the magnetic declination is 5? 20' east, the magnetic bearing of the sun at noon will be

Chain surveying consists of the arrangement of framework of triangles because a triangle is the only simple plane figure which can be plotted uniquely if

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

For accurate work, the lengths of back sight and fore sight are kept unequal.

The levelling should always commence from a temporary bench mak and end on a permanent bench mark.

An imaginary line joining the point of intersection of the cross-hairs of the diaphragm and the optical centre of the object glass, is known as

The optical square is used to measure angles by

The deflection angle for any chord is equal to the deflection angle for the proceeding chord minus the tangential angle for that chord.

An optical square is used for the same purpose as the cross-staff, but it is more accurate.

The index glass in an optical square is

The methods used for locating the plane table stations are

In an optical square, the angle between the first incident ray and the last reflected ray is

The angle of intersection of the horizon glass and index glass in an optical square is

The method of intersection in plane tabling is commonly used for

If the fore bearing of a line is N 26? 35' W, its back bearing will be

The magnetic bearing of a line is 55? 30v and the magnetic declination is 4? 30' west. The true bearing of a line will be

The magnetic bearing of a line is S 35? 30' E and the magnetic declination is 4? 10' east. The true bearing of a line will be

A metallic tape is made of an alloy of nickel and steel.

An invar tape is generally used for accurate measurement of distance because it possesses

If a chain is used at a temperature at which it was calibrated, the error in measured length is positive.

In tachcometric method of setting out a curve, no chain or tape is used.

An angle made by a survey line with the prolongation of the proceeding line, is known as

The correction to the measured length will be negative when the chain is held on the ground sloping upwards.

When (h) is the difference in heights between the extremities of a chain length (l), then the correction for slope required is

The error in measured length due to sag of chain or tape is known as

The error in measured length due to incorrect holding of chain is

When the length of chain used in measuring distance is shorter than the standard length, the error in measured distance will be compensating error.

When the latitudes and departures are so adjusted that the algebraic sum of the latitudes and departures are equal to zero, the operation is called

A line normal to the plumb line at all points is known as

A vertical line at any point is a line normal to the level surface at the point.

A surface which is normal to the direction of gravity at all points, as indicated by a plumb line, is known as

The method of levelling in which the heights of mountains are found by observing the temperature at which water boils is known as

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

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

Direct ranging is possible only when the end stations are

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

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