Q.1

If the length of a transition curve to be introduced between a straight and a circular curve of radiusm ism, the maximum deflection angle to locate its junction point, is

  • 1°43' 08"
  • 1°43' 18"
  • 1°43' 28"
  • 1°43' 38"
Q.2

In a perfect prismatic compass

  • magnetic axis and geometric axis of the needle coincide
  • ends of the needle and pivot are in same vertical and horizontal planes
  • pivot is vertically over the centre of the graduated circle
  • needle is always kept sensitive
  • all the above.
Q.3

The magnetic bearing of a line isand the magnetic declination isW. The true bearing is

  • 21° 45'
  • 42° 15'
  • 42° 15' W
  • 21° 45' W
Q.4

Simpson's rule for calculating areas states that the area enclosed by a curvilinear figure divided into an even number of strips of equal width, is equal to

  • half the width of a strip, multiplied by the sum of two extreme offsets, twice the sum of remaining odd offsets, and thrice the sum of the even offsets
  • one third the width of a strip, multiplied by the sum of two extreme offsets, twice the sum of remaining odd offsets and four times the sum of the even offsets
  • one third the width of a strip, multiplied by the sum of two extreme offsets, four times the sum of the remaining odd offsets, and twice the sum of the even offsets
  • one sixth the width of a strip, multiplied by the sum of the two extreme offsets, twice the sum of remaining odd offsets and four times the sum of the even offsets
  • none of these
Q.5

To orient a plane table at a point P roughly south of the mid-point of two inaccessible conical hill stations A and B in the plains, a point C is selected in line with AB and table is oriented at C by bringing ab in line with AB. A ray is then drawn towards P and at P the table is oriented by back ray method. The orientation so obtained, is

  • unique and correct
  • incorrect
  • manifold and correct
  • not reliable.
Q.6

The distances AC and BC are measured from two fixed points A and B whose distance AB is known. The point C is plotted by intersection. This method is generally adopted in

  • chain surveying
  • traverse method of surveys
  • triangulation
  • none of these.
Q.7

The theodolites used for making tacheometric observations by optical wedge system, are

  • provided with stadia hairs in front of eye piece
  • not provided with stadia hairs at all
  • fitted with a glass wedge inside the telescope
  • fitted with a glass wedge in front of telescope.
Q.8

The correction to be applied to eachmetre chain length along θ° slope, is

  • 30 (sec θ - 1) m
  • 30 (sin θ - 1) m
  • 30 (cos θ - 1) m
  • 30 (tan θ - 1) m
  • 30 (cot θ - 1) m.
Q.9

The 'fix' of a plane table from three known points, is good, if

  • middle station is nearest
  • middle station is farthest
  • either the right or left station is nearest
  • none of these.
Q.10

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

  • check clines
  • proof lines
  • tie lines
  • all of these.
Q.11

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.
Q.12

Pick up the correct statement from the following :

  • a refracting telescope consists optically of two lenses
  • the principal axes of both the lenses coincide the optical axis of the telescope
  • the lens nearer the object to be viewed is convex and is called objective
  • the lens nearer the eye is called eyepiece
  • all the above.
Q.13

The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as

  • chromatic aberration
  • spherical aberration
  • astigmatism
  • coma.
Q.14

The sag ofm tape weighing 4 kg under 5 kg tension is roughly

  • 0.043 m
  • 0.053 m
  • 0.063 m
  • 0.073 m
  • 0.083 m
Q.15

In a constant level tube, size of the bubble remains constant because upper wall is

  • of relatively larger radius
  • of relatively smaller radius
  • flat
  • convex downwards.
Q.16

Which one of the following statements is correct ?

  • when the axes of rotation of the graduated circle and the verniers are not coincident, the instrument possesses eccentricity
  • the mean of the readings of the two verniers gives correct reading free from the eccentricity
  • one vernier may be used if the readings of two verniers differ by a constant
  • all the above.
Q.17

The construction of optical square is based, on the principle of optical

  • reflection
  • refraction
  • double refraction
  • double reflection.
Q.18

To set out a parallel from a given inccessible point to a given line AB, the following observations and made
Distance AB and angle PAM = a and angle PBA = b are measured where Mis a point on the line BA produced. The perpendicular to the desired parallel line from A and B are :

Q.19

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.
Q.20

Which of the following introduces an error of about 1 inifm chain is used

  • length of chain 20 mm wrong
  • one end of the chain 0.9 m off the line
  • one end of chain 0.9 m higher than the other
  • middle of the chain 0.45 m off the line
  • all the above.
Q.21

Pick up the correct statement from the following

  • 1 second of arc corresponds to a displacement ratio of 1:206, 300
  • 1 degree of arc corresponds to a displacement ratio of 1:57
  • the angular errors tend to propagate themselves along a traverse as the square root of the number of stations
  • the errors arising from the linear measures tend to be roughly proportional to the lengths of the lines
  • all the above.
Q.22

Which of the following introduces an error of about 1 inifm chain is used

  • length of chain 20 mm wrong
  • one end of the chain 0.9 m off the line
  • one end of chain 0.9 m higher than the other
  • middle of the chain 0.45 m off the line
  • all the above.
Q.23

If F is the pull applied at the ends of tape in kg, l is the length of tape between end marks in metres, w is the weight of the tape in kg per metre run, then sag correction

  • .
Q.24

Hydrographic surveys deal with the mapping of

  • large water bodies
  • heavenly bodies
  • mountaineous region
  • canal system
  • movement of clouds.
Q.25

An ideal vertical curve to join two gradients, is

  • circular
  • parabolic
  • elliptical
  • hyperbolic
  • none of these.
Q.26

An ideal vertical curve to join two gradients, is

  • circular
  • parabolic
  • elliptical
  • hyperbolic
  • none of these.
Q.27

Pick up the correct statement from the following :

  • the eyepiece plays no part in defining the line of sight
  • the diaphragm 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.
Q.28

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.
Q.29

In chain surveying field work is limited to

  • linear measurements only
  • angular measurements only
  • both linear and angular measurements
  • all the above.
Q.30

The sensitiveness of a level tube decreases if

  • radius of curvature of its inner surface is increased
  • diameter of the tube is increased
  • length of the vapour bubble is increased
  • both viscosity and surface tension are increased.
Q.31

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

  • 10 m
  • 25 m
  • 50 m
  • 100 m
Q.32

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

  • adding 180°, if the given bearing is less than 180°
  • subtracting 180°, if the given bearing, is more than 180°
  • changing the cardinal points, i.e. substituting N for S and E for W and vice-versa
  • none of these.
Q.33

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.
Q.34

For a closed traverse the omitted measurements may be calculated

  • length of one side only
  • bearing of one side only
  • both length and bearing of one side
  • length or bearing of adjacent side
  • all the above.
Q.35

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

  • 10 cm
  • 20 cm
  • 30 cm
  • 40 cm
Q.36

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

  • at any point between A and B
  • at the exact mid point of A and B
  • near the point A
  • near the point B.
Q.37

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

  • 573 S/R
  • 573 R/S
  • 171.9 S/R
  • 1718.9 R/S
  • 1718.9 S/R.
Q.38

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 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
  • none of the above.
Q.39

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

  • 25 cm
  • 50 cm
  • 75 cm
  • 100 cm
  • 125 cm
Q.40

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

  • location of the instrument station is always distant from each of the three rays from the known points in proportion to their distances
  • 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
  • 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
  • none of these.
Q.41

Accuracy of 'fix' by two point problem, is

  • bad
  • good
  • not reliable
  • unique.
Q.42

The slope correction for a length ofm along a gradient of 1 inis

  • 3.75 cm
  • 0.375 cm
  • 37.5 cm
  • 2.75 cm.
Q.43

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

  • 25 cm
  • 50 cm
  • 75 cm
  • 100 cm
  • 125 cm
Q.44

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

  • 90°
  • 120°
  • 210°
  • 270°
Q.45

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

  • in the plane of cross hairs
  • at the centre of the telescope
  • at the optical centre of the eye-piece
  • anywhere inside the telescope.
Q.46

Pick up the correct statement from the following:

  • the theodolite in which telescope can be rotated in vertical plane is called a transit
  • when the vertical circle is to the left of the telescope during observation, it is called to be in left face
  • when the vertical circle is to the right of the telescope during observation, it is called to be in right face
  • all the above.
Q.47

Offsets are measured with an accuracy of 1 inIf the point on the paper from both sources of error (due to angular and measurement errors) is not to exceed 0.cm on a scale of 1 cm =m, the maximum length of offset should be limited to

  • 14.14
  • 28.28 m
  • 200 m
  • none of these.
Q.48

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

  • contour surface
  • contour gradient
  • contour line
  • level line
  • none of these.
Q.49

A bearing of a line is also known as

  • magnetic bearing
  • true bearing
  • azimuth
  • reduced bearing
Q.50

Pick up the correct statement from the following:

  • the theodolite in which telescope can be rotated in vertical plane is called a transit
  • when the vertical circle is to the left of the telescope during observation, it is called to be in left face
  • when the vertical circle is to the right of the telescope during observation, it is called to be in right face
  • all the above.
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