Centering error of a theodolite produces an error

which does not vary with the direction or pointing

which varies with the direction of pointing and inversely with the length of sight

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

thrice the distance between the zero of graduation and the foot of the staff

the distance between the zero of gradient and the foot of the staff

twice the distance between the zero of graduation and the foot of the staff

thrice the distance between the zero of graduation and the foot of the staff

If the declination of the needle is 10¬∞ W

each of the whole circle reckoning has to be micros by 10¬∞

in the quadrantal method, the correction is positive in the 1st and 3rd quadrants

in the quadrantal method, the corrections is negative in 2nd and 4th quadrants

If the chain line which runs along N-S direction is horizontal and the ground in E-W direction is sloping

it is possible to set offsets correctly on east side

it is not possible to set offsets correctly on west side

it is possible to set offsets correctly on both sides.

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

Transition curves are introduced at either end of a circular curve, to obtain

gradual change of gradient from zero at the tangent point to the specified amount at the junction of the transition curve with main curve

gradually decrease of curvature from zero at the tangent point to the specified quantity at the junction of the transition curve with main curve

gradual increase of super-elevation from zero at the tangent point to the specified amount at the junction of the transition curve with main curve

gradual change of gradient from zero at the tangent point to the specified amount at the junction of the transition curve with main curve

While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates

the trummion axis is horizontal

the line of collimation is perpendicular to vertical axis

Accurate measurement of deflection angles with a transit not properly adjusted may be made by

setting the vernier A at zero at back station and then plunging the telescope

setting the vernier A at zero at back station and turning the instrument to the forward station

taking two back sights one with the telescope normal and the other with telescope inverted

Pick up the correct specification of Ramsden eyepiece from the following :

it consists of two equal piano convex lenses

the curved surfaces of plano-convex lenses face each other

the two lenses are separated by a distance equal to 2/3 of the focal length of either lens.

the distance between the diaphragm and the front lens of the eyepiece is kept equal to 1/4 th of the focal length of a lens so that rays from a point on the diaphragm enter the eye as a parallel beam

The lens equation is applicable

when the thickness of the lens is small

only to conjugate distances along the principal axis

the computed quantities are accurate enough for geometrical optics of simple distances

While measuring a chain line between two stations A and B intervened by a raised ground

both vision and chaining get obstructed

The total change in level along the line is equal to total back sights

the total rises minus total falls

the reduced level of last point minus reduced level of the first point

The least count of a vernier scale is

value of one division of vernier scale divided by total number of divisions of primary scale

sum of the smallest divisions of main and vernier scales

value of one division of the primary scale divided by total number of divisions of vernier scale

value of one division of vernier scale divided by total number of divisions of primary scale

From any point on the surface with a given inclination

only one contour gradient is possible

two contour gradients are possible

indefinite contour gradients are possible

The formula for the horizontal distances for inclined sights, on staff held normalis s cos Œ∏ + (f + d) cos Œ∏ ¬± h sin Œ∏

plus sign is used for angle of depression

minus sign is used for angle of depression

plus sign is used for angle of depression

minus sign is used for angle of elevation

492 + Mcqs in Surveying in Civil Engineering Page 8 McqOptions

351.	Perpendicular offset from a tangent to the junction of a transition curve and circular curve is equal to
A.	shift
B.	twice the shift
C.	thrice the shift
D.	four times the shift.
Answer» E.

Discussion

352.	Centering error of a theodolite produces an error
A.	in all angles equally
B.	which does not vary with the direction or pointing
C.	which varies with the direction of pointing and inversely with the length of sight
D.	none of these.
Answer» D. none of these.

Discussion

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

Discussion

354.	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.	thrice the distance between the zero of graduation and the foot of the staff
D.	none of the above.
Answer» C. thrice the distance between the zero of graduation and the foot of the staff

Discussion

355.	If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum deflection angle to locate its junction point, is
A.	1¬∞43' 08"
B.	1¬∞43' 18"
C.	1¬∞43' 28"
D.	1¬∞43' 38"
Answer» D. 1¬∞43' 38"

Discussion

356.	The Trapezoidal rule of volumes V of an embankment divided into a number of sections equidistant D, is given by
A.
B.
Answer» B.

Discussion

357.	If the declination of the needle is 10¬∞ W
A.	each of the whole circle reckoning has to be micros by 10¬∞
B.	in the quadrantal method, the correction is positive in the 1st and 3rd quadrants
C.	in the quadrantal method, the corrections is negative in 2nd and 4th quadrants
D.	all the above.
Answer» E.

Discussion

358.	If the chain line which runs along N-S direction is horizontal and the ground in E-W direction is sloping
A.	it is possible to set offsets correctly on east side
B.	it is possible to set offsets correctly on east side
C.	it is not possible to set offsets correctly on west side
D.	it is possible to set offsets correctly on both sides.
Answer» E.

Discussion

359.	The reduced level of a floor is 99.995 m, the staff reading on the floor is 1.505 m. If the inverted staff reading against the roof is 1.795 m, the floor level below the slab, is
A.	3.290 m
B.	3.300 m
C.	3.275 m
D.	2.790 m
Answer» C. 3.275 m

Discussion

360.	The horizontal angle between true meridian and magnetic meridian, is known
A.	bearing
B.	magnetic declination
C.	dip
D.	convergence.
Answer» C. dip

Discussion

361.	The whole circle bearing of a line is 290¬∞. Its reduced bearing is
A.	N 20¬∞ E
B.	N 20¬∞ W
C.	N 70¬∞ W
D.	S 70¬∞ E
Answer» D. S 70¬∞ E

Discussion

362.	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.
Answer» D. none of these.

Discussion

363.	In chain surveying, perpendiculars to the chain line, are set out by
A.	a theodolite
B.	a prismatic compass
C.	a level
D.	an optical square
Answer» E.

Discussion

364.	In precision theodolite traverse if included angles are read twice and the mean reading accepted using both verniers having a least count of 30". Assuming the instrument to be in perfect adjustment, linear measurements correct to 6 mm per 30 metre tape duly corrected for temperature, slope and sag, the angular error of closure not to exceed (where n is the number of traverse legs)
A.	50" n
B.	30" n
C.	60" n.
Answer» B. 30" n

Discussion

365.	The instrument which is used in plane tabling for obtaining horizontal and vertical distances directly without resorting to chaining, is known as
A.	Plane alidade
B.	telescopic alidade
C.	clinometer
D.	tacheometer.
Answer» C. clinometer

Discussion

366.	The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the vernier coincide exactly with 59 divisions of the main plate. The transit can read angles accurate upto
A.	5"
B.	10"
C.	15"
D.	20"
Answer» E.

Discussion

367.	For a curve of radius 100 m and normal chord 10 m, the Rankine's deflection angle, is
A.	0¬∞25'.95
B.	0¬∞35'.95
C.	1¬∞25'.53
D.	1¬∞35'.95
Answer» E.

Discussion

368.	Transition curves are introduced at either end of a circular curve, to obtain
A.	gradually decrease of curvature from zero at the tangent point to the specified quantity at the junction of the transition curve with main curve
B.	gradual increase of super-elevation from zero at the tangent point to the specified amount at the junction of the transition curve with main curve
C.	gradual change of gradient from zero at the tangent point to the specified amount at the junction of the transition curve with main curve
D.	none of these.
Answer» C. gradual change of gradient from zero at the tangent point to the specified amount at the junction of the transition curve with main curve

Discussion

369.	While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates
A.	the rotation axis is vertical
B.	the trummion axis is horizontal
C.	the line of collimation is perpendicular to vertical axis
D.	none of the above
Answer» B. the trummion axis is horizontal

Discussion

370.	On a diagonal scale, it is possible to read up to
A.	one dimension
B.	two dimensions
C.	three dimensions
D.	four dimensions.
Answer» D. four dimensions.

Discussion

371.	You have to observe an included angle with better accuracy than what is achievable by a vernier, you will prefer the method of
A.	repetition
B.	reiteration
C.	double observations
D.	exactness.
Answer» B. reiteration

Discussion

372.	If the whole circle bearing of a line is 270¬∞, its reduced bearing is
A.	N 90¬∞ W
B.	S 90¬∞ W
C.	W 90¬∞
D.	90¬∞ W.
Answer» D. 90¬∞ W.

Discussion

373.	The additional lines which are measured to show the correctness of the chain surveying are called:
A.	check clines
B.	proof lines
C.	tie lines
D.	all of these.
Answer» E.

Discussion

374.	A uniform slope was measured by the method of stepping. If the difference in level between two points is 1.8 m and the slope distance between them is 15 m, the error is approximately equal to
A.	cumulative, + 0.11 m
B.	compensating, ¬± 0.11 m
C.	cumulative, - 0.11 m
D.	none of these
Answer» B. compensating, ¬± 0.11 m

Discussion

375.	ABCD is a rectangular plot of land. If the bearing of the side AB is 75¬∞, the bearing of DC is
A.	75¬∞
B.	255¬∞
C.	105¬∞
D.	285¬∞
Answer» B. 255¬∞

Discussion

376.	Correction per chain length of 100 links along a slope having a rise of 1 unit in n horizontal units, is
A.
B.	100 n2
Answer» B. 100 n2

Discussion

377.	It is more difficult to obtain good results while measuringhorizontal distance by stepping
A.	up-hill
B.	down-hill
C.	in low undulations
D.	in plane areas.
Answer» B. down-hill

Discussion

378.	Accurate measurement of deflection angles with a transit not properly adjusted may be made by
A.	setting the vernier A at zero at back station and then plunging the telescope
B.	setting the vernier A at zero at back station and turning the instrument to the forward station
C.	taking two back sights one with the telescope normal and the other with telescope inverted
D.	none of these.
Answer» D. none of these.

Discussion

379.	Pick up the correct specification of Ramsden eyepiece from the following :
A.	it consists of two equal piano convex lenses
B.	the curved surfaces of plano-convex lenses face each other
C.	the two lenses are separated by a distance equal to 2/3 of the focal length of either lens.
D.	the distance between the diaphragm and the front lens of the eyepiece is kept equal to 1/4 th of the focal length of a lens so that rays from a point on the diaphragm enter the eye as a parallel beam
Answer» E.

Discussion

380.	The lens equation is applicable
A.	when the thickness of the lens is small
B.	only to conjugate distances along the principal axis
C.	the computed quantities are accurate enough for geometrical optics of simple distances
D.	all the above.
Answer» E.

Discussion

381.	The desired sensitivity of a bubble tube with 2 mm divisions is 30". The radius of the bubble tube should be
A.	13.75 m
B.	3.44 m
C.	1375 m
D.	none of these.
Answer» B. 3.44 m

Discussion

382.	The systematic errors which persist and have regular effects in the performance of a survey operation, are due to
A.	carelessness
B.	faulty instrument
C.	inattention
D.	none of these.
Answer» C. inattention

Discussion

383.	A level when set up 25 m from peg A and 50 m from peg B reads 2.847 on a staff held on A and 3.462 on a staff held on B, keeping bubble at its centre while reading. If the reduced levels of A and B are 283.665 m and 284.295 m respectively, the collimation error per 100 m is
A.	0.015 m
B.	0.030 m
C.	0.045 m
D.	0.060 m
Answer» E.

Discussion

384.	The longitudinal section of the surface of bubble tube is
A.	straight
B.	circular
C.	parabolic
D.	elliptic.
Answer» C. parabolic

Discussion

385.	While setting a plane table at a station it was found that the error in centering was 30 cm away from the ray of length 40 m drawn from the station. If the scale of the plan is 1 cm = 2 cm, the displacement of the end of the ray in plan from the true position will be
A.	0.02 cm
B.	0.15 cm
C.	02 cm
D.	0.1 cm
Answer» C. 02 cm

Discussion

386.	For taking offsets with an optical square on the right hand side of the chain line, it is held
A.	by right hand upside down
B.	by left hand upright
C.	by right hand upright
D.	by left hand up side down.
Answer» C. by right hand upright

Discussion

387.	While measuring a chain line between two stations A and B intervened by a raised ground
A.	vision gets obstructed
B.	chaining gets obstructed
C.	both vision and chaining get obstructed
D.	all the above.
Answer» B. chaining gets obstructed

Discussion

388.	The bearing of line AB is 152¬∞ 30' and angle ABC measured clockwise is 124¬∞ 28'. The bearing of BC is
A.	27¬∞ 52'
B.	96¬∞ 58'
C.	148¬∞ 08'
D.	186¬∞ 58'
Answer» C. 148¬∞ 08'

Discussion

389.	The correction to be applied to each 30 metre chain length along Œ∏¬∞ slope, is
A.	30 (sec Œ∏ - 1) m
B.	30 (sin Œ∏ - 1) m
C.	30 (cos Œ∏ - 1) m
D.	30 (tan Œ∏ - 1) m
Answer» B. 30 (sin Œ∏ - 1) m

Discussion

390.	The back staff reading on a B.M. of R.L. 500.000 m is 2.685 m. If foresight reading on a point is 1.345 m, the reduced level of the point, is
A.	502.685 m
B.	501.345 m
C.	501.340 m
D.	504.030 m
Answer» D. 504.030 m

Discussion

391.	The total change in level along the line is equal to total back sights
A.	minus total fore sights
B.	the total rises minus total falls
C.	the reduced level of last point minus reduced level of the first point
D.	all the above.
Answer» E.

Discussion

392.	A dumpy level is set up with its eye-piece vertically over a peg A. The height from the top of peg A to the centre of the eye-piece is 1.540 m and the reading on peg B is 0.705 m. The level is then setup over B. The height of the eye-piece above peg B is 1.490 m and a reading on A is 2.195 m. The difference in level between A and B is
A.	2.900 m
B.	3.030 m
C.	0.770 m
D.	0.785 m
Answer» D. 0.785 m

Discussion

393.	The least count of a vernier scale is
A.	sum of the smallest divisions of main and vernier scales
B.	value of one division of the primary scale divided by total number of divisions of vernier scale
C.	value of one division of vernier scale divided by total number of divisions of primary scale
D.	none of these.
Answer» C. value of one division of vernier scale divided by total number of divisions of primary scale

Discussion

394.	Contour lines of different elevations can unite to form one line, only in the case of
A.	a vertical cliff
B.	a saddle
C.	a water shed line
D.	a hill top.
Answer» B. a saddle

Discussion

395.	From any point on the surface with a given inclination
A.	only one contour gradient is possible
B.	two contour gradients are possible
C.	indefinite contour gradients are possible
D.	all the above.
Answer» D. all the above.

Discussion

396.	The formula for the horizontal distances for inclined sights, on staff held normalis s cos Œ∏ + (f + d) cos Œ∏ ¬± h sin Œ∏
A.	minus sign is used for angle of depression
B.	plus sign is used for angle of depression
C.	minus sign is used for angle of elevation
D.	non of these.
Answer» B. plus sign is used for angle of depression

Discussion

397.	The boundary of water of a still lake, represents
A.	level surface
B.	horizontal surface
C.	contour line
D.	a concave surface.
Answer» D. a concave surface.

Discussion

398.	The method of finding out the difference in elevation between two points for eliminating the effect of curvature and refraction, is
A.	reciprocal levelling
B.	precise levelling
C.	differential levelling
D.	flying levelling
Answer» B. precise levelling

Discussion

399.	If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum perpendicular offset for the transition curve, is
A.	0.70 m
B.	1.70 m
C.	2.70 m
D.	3.70 m
Answer» D. 3.70 m

Discussion

400.	If i is the stadia distance, f is the focal length and d is the distance between the objective and vertical axis of the techeometer, the multiplying constant, is
A.	f/i
B.	i/f
C.	(f + d)
D.	f/d.
Answer» B. i/f

Discussion

Explore topic-wise MCQs in Civil Engineering.

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

Centering error of a theodolite produces an error

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

If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum deflection angle to locate its junction point, is

The Trapezoidal rule of volumes V of an embankment divided into a number of sections equidistant D, is given by

If the declination of the needle is 10¬∞ W

If the chain line which runs along N-S direction is horizontal and the ground in E-W direction is sloping

The reduced level of a floor is 99.995 m, the staff reading on the floor is 1.505 m. If the inverted staff reading against the roof is 1.795 m, the floor level below the slab, is

The horizontal angle between true meridian and magnetic meridian, is known

The whole circle bearing of a line is 290¬∞. Its reduced bearing is

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

In chain surveying, perpendiculars to the chain line, are set out by

The instrument which is used in plane tabling for obtaining horizontal and vertical distances directly without resorting to chaining, is known as

The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the vernier coincide exactly with 59 divisions of the main plate. The transit can read angles accurate upto

For a curve of radius 100 m and normal chord 10 m, the Rankine's deflection angle, is

Transition curves are introduced at either end of a circular curve, to obtain

While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates

On a diagonal scale, it is possible to read up to

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

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

The additional lines which are measured to show the correctness of the chain surveying are called:

A uniform slope was measured by the method of stepping. If the difference in level between two points is 1.8 m and the slope distance between them is 15 m, the error is approximately equal to

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

Correction per chain length of 100 links along a slope having a rise of 1 unit in n horizontal units, is

It is more difficult to obtain good results while measuringhorizontal distance by stepping

Accurate measurement of deflection angles with a transit not properly adjusted may be made by

Pick up the correct specification of Ramsden eyepiece from the following :

The lens equation is applicable

The desired sensitivity of a bubble tube with 2 mm divisions is 30". The radius of the bubble tube should be

The systematic errors which persist and have regular effects in the performance of a survey operation, are due to

A level when set up 25 m from peg A and 50 m from peg B reads 2.847 on a staff held on A and 3.462 on a staff held on B, keeping bubble at its centre while reading. If the reduced levels of A and B are 283.665 m and 284.295 m respectively, the collimation error per 100 m is

The longitudinal section of the surface of bubble tube is

While setting a plane table at a station it was found that the error in centering was 30 cm away from the ray of length 40 m drawn from the station. If the scale of the plan is 1 cm = 2 cm, the displacement of the end of the ray in plan from the true position will be

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

While measuring a chain line between two stations A and B intervened by a raised ground

The bearing of line AB is 152¬∞ 30' and angle ABC measured clockwise is 124¬∞ 28'. The bearing of BC is

The correction to be applied to each 30 metre chain length along Œ∏¬∞ slope, is

The back staff reading on a B.M. of R.L. 500.000 m is 2.685 m. If foresight reading on a point is 1.345 m, the reduced level of the point, is

The total change in level along the line is equal to total back sights

The least count of a vernier scale is

Contour lines of different elevations can unite to form one line, only in the case of

From any point on the surface with a given inclination

The formula for the horizontal distances for inclined sights, on staff held normalis s cos Œ∏ + (f + d) cos Œ∏ ¬± h sin Œ∏

The boundary of water of a still lake, represents

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

If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum perpendicular offset for the transition curve, is

If i is the stadia distance, f is the focal length and d is the distance between the objective and vertical axis of the techeometer, the multiplying constant, is