Surveying MCQ Practice Questions (Civil Engineering) Set 9

In chain surveying field work is limited to:


Options are :

  • Both linear and angular measurements
  • All the above
  • Linear measurements only
  • Angular measurements only

Answer :Linear measurements only

The probable error of the adjusted bearing at the middle is:


A.


r?n


B.

r?n


C.

r?n


D.

r?n


Options are :

  • C
  • A
  • B
  • D

Answer :A

Geodetic surveying is undertaken:


Options are :

  • For production of accurate maps of wide areas
  • For developing the science of geodesy
  • All the above
  • Making use of most accurate instruments and methods of observation
  • For determination of accurate positions on the earth's surface of system of control points

Answer :All the above

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


Options are :

  • 3.75 cm
  • 37.5 cm
  • 2.75 cm
  • 0.375 cm

Answer :3.75 cm

Pick up the correct statement from the following:


Options are :

  • The power of a lens is the reciprocal of its focal length
  • All the above
  • The power of two or more thin lenses in contact is the power of the combination of the lenses
  • The unit of power of the lens is diopter

Answer :All the above

Surveying MCQ Practice Questions (Civil Engineering) Set 1

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:


Options are :

  • Said to have parallax
  • Not correctly focussed
  • Correctly focussed
  • Free from parallax

Answer :Said to have parallax

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:


Options are :

  • 1718.9 R/S
  • 573 S/R
  • 1718.9 S/R
  • 171.9 S/R
  • 573 R/S

Answer :1718.9 S/R

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:


Options are :

  • Cumulative, - 0.11 m
  • None of these
  • Compensating, 0.11 m
  • Cumulative, + 0.11 m

Answer :Cumulative, + 0.11 m

Surveying MCQ Practice Questions (Civil Engineering) Set 10

If f1 and f2 are the distances from the optical centre of a convex lens of focal length f to conjugate two points P1 and P2 respectively, the following relationship holds good:


A.

f = f1 + f2


B.

f =

(f1 + f2)


C.


D.

None of these


Options are :

  • C
  • B
  • A
  • D

Answer :C

If arithmetic sum of latitudes of a closed traverse is ?Lat and closing error in latitude is dx, the correction for a side whose latitude is l, as given by Transit Rule, is:


A.


B.


C.


D.

None of these


Options are :

  • B
  • C
  • D
  • A

Answer :A

If ? is the slope of the ground and l is the measured distance, the correction is:


Options are :

  • 2l cos^(2) ?/2
  • 2l tan^(2) ?/2
  • 2l sin^(2) ?/2
  • 2l cot^(2) ?/2

Answer :2l sin^(2) ?/2

Surveying MCQ Practice Questions (Civil Engineering) Set 11

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:


Options are :

  • None of these
  • 14.14
  • 28.28 m
  • 200 m

Answer :28.28 m

A bearing of a line is also known as:


Options are :

  • Magnetic bearing
  • True bearing
  • Azimuth
  • Reduced bearing

Answer :True bearing

Setting out a curve by two theodolite method, involves:


Options are :

  • Both linear and angular measurements
  • None of these
  • Linear measurements only
  • Angular measurements only

Answer :Angular measurements only

Surveying MCQ Practice Questions (Civil Engineering) Set 13

Measuring with a 30 m chain, 0.01 m too short, introduces:


Options are :

  • Positive cumulative error
  • Positive compensating error
  • Negative compensating error
  • Negative cumulative error

Answer :Positive cumulative error

If the rate of gain of radial acceleration is 0.3 m per sec3 and full centrifugal ratio is developed. On the curve the ratio of the length of the transition curve of same radius on road and railway, is:


Options are :

  • 3.828
  • 0.828
  • 2.828
  • 1.828

Answer :2.828

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


Options are :

  • Level line
  • None of these
  • Contour line
  • Contour gradient
  • Contour surface

Answer :Contour line

Surveying MCQ Practice Questions (Civil Engineering) Set 3

The operation of making the algebraic sum of latitudes and departures of a closed traverse, each equal to zero, is known:


Options are :

  • Balancing the departures
  • Balancing the traverse
  • Balancing the latitudes
  • Balancing the sights

Answer :Balancing the traverse

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


Options are :

  • None of these
  • Carelessness
  • Inattention
  • Faulty instrument

Answer :Faulty instrument

If h is the difference in level between end points separated by l, then the slope correction is

. The second term may be neglected if the value of h in a 20 m distance is less than:


Options are :

  • 1/2 m
  • 3 m
  • 1 m
  • 2 m

Answer :3 m

Surveying MCQ Practice Questions (Civil Engineering) Set 4

If the sight distance (S) is equal to the length of the vertical-curve (2l) joining two grades g1% and - g2%, the height of the apex will be:


A.


B.


C.


D.

None of these


Options are :

  • D
  • B
  • A
  • C

Answer :B

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:


Options are :

  • 1.770 m
  • 0.785 m
  • 3.030 m
  • 2.900 m
  • 0.770 m

Answer :0.770 m

If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is done by:


Options are :

  • Empirical rule
  • Bowditch's rule
  • All of the above
  • Transit rule

Answer :Transit rule

Surveying MCQ Practice Questions (Civil Engineering) Set 5

Pick up the correct statement from the following:


Options are :

  • In Galileo's telescope, the rays from the object get refracted at the objective and are intercepted by the eyepiece before a real image is formed
  • All the above
  • In astronomical telescope, the rays from the object after refraction at the objective are brought to a focus before entering the eyepiece to produce a real inverted image in front of the eye piece
  • A line passing through the optical centre of the objective traversing through the eyepiece, is called line of sight
  • The line of sight which passes through the intersection of cross-lines marked on a diaphragm fixed in front of the eyepiece in a plane at right-angles to the axis, is called the line of collimation

Answer :All the above

Deviation of the actual road gradient from the proposed contou'r gradient up hill side, involves:


Options are :

  • Excavation on the centre line
  • None of these
  • Earth work on the centre line
  • Embankment on the centre line

Answer :Excavation on the centre line

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


Options are :

  • Compass surveying
  • Plan table surveying
  • Tacheometric surveying
  • Chain surveying

Answer :Plan table surveying

Surveying MCQ Practice Questions (Civil Engineering) Set 6

Pick up the correct statement from the following:


Options are :

  • The length of the brass handle is included in the length of chain
  • The length of the Gunter's chain is 66 ft
  • The fifth tag from either end of the chain is numbered 5
  • All the above
  • The handles are on swivel joints to prevent twisting of the chain

Answer :All the above

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:


Options are :

  • Twice the distance between the zero of graduation and the foot of the staff
  • None of the above
  • The distance between the zero of gradient and the foot of the staff
  • Thrice the distance between the zero of graduation and the foot of the staff

Answer :Twice the distance between the zero of graduation and the foot of the staff

In chain surveying tie lines are primarily provided:


Options are :

  • to increase the number of chain lines
  • to avoid long offsets from chain lines
  • to check the accuracy of the survey
  • to take offsets for detail survey

Answer :to avoid long offsets from chain lines

Surveying MCQ Practice Questions (Civil Engineering) Set 7

Keeping the instrument height as 1

m, length of staff 4 m, the up gradient of the ground 1 in 10, the sight on the up slope must be less than:


Options are :

  • 25 cm
  • 20 m
  • 10 m
  • 45 m

Answer :45 m

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