Surveying Objective Question | Answer | Pdf - 03
Question No. 01 While measuring a chain line between two stations and 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: Option A
Question No. 02 Mistakes which may produce a very serious effect upon the final results arise due to
(A) In attention
(B) In experience
(C) Carelessness
(D) All of these
Answer: Option D
Question No. 03 While surveying a plot of land by plane tabling, the field observations
(A) And plotting proceed simultaneously
(B) And plotting do not proceed simultaneously
(C) And recorded in field books to be plotted later
(D) All the above
Answer: Option A
Question No. 04 Metric chains are generally available in
(A) 10 m and 20 m length
(B) 15 m and 20 m length
(C) 20 m and 30 m length
(D) 25 m and 100 m length
Answer: Option C
Question No. 05 The bearing of AB is 190° and that of CB is 260° 30'. The included angle ABC, is
(A) 80° 30'
(B) 99° 30'
(C) 70° 30'
(D) None of these
Answer: Option C
Question No. 06 Pick up the correct statement from the following
(A) 1 second of arc corresponds to a displacement ratio of 1:206, 300
(B) 1 degree of arc corresponds to a displacement ratio of 1:57
(C) The angular errors tend to propagate themselves along a traverse as the square root of the number of stations
(D) All the above
Answer: Option D
Question No. 07 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: Option B
Question No. 08 In a theodolite
(A) The telescope axis is perpendicular to transit axis
(B) The axis of rotation is perpendicular to transit axis
(C) The telescope axis, the transit axis and the rotation axis pass through the centre of theodolite
(D) All the above
Answer: Option D
Question No. 09 For orientation of a plane table with three points A, B and C, Bessel's drill is
(A) Align B through A and draw a ray towards C, align A through B and draw A ray towards C, finally align C through the point of intersection of the previously drawn rays
(B) Align C through A and draw a ray towards B, align A through C and draw A ray towards B, finally align B through the point of intersection of the previously drawn rays
(C) Align c through B and draw a ray towards A, align B through C and draw A ray towards A, finally align A, through the point of intersection of the previously, drawn rays
(D) In the first two steps any two of the points may be used and a ray drawn towards the third point, which is sighted through the point of intersection of previously drawn rays in the final step.
Answer: Option D
Question No. 10 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
(D) None of these
Answer: Option A
Question No. 11 A relatively fixed point of known elevation above datum, is called
(A) Bench mark
(B) Datum point
(C) Reduced level
(D) Reference point
Answer: Option A
Question No. 12 The power of a lens
(A) Is reciprocal of its focal length
(B) Is positive if it is a convex lens
(C) Is negative if it is a concave lens
(D) Is measured in Diopter
Answer: Option D
Question No. 13 For the construction of highway (or railway)
(A) Longitudinal sections are required
(B) Cross sections are required
(C) Both longitudinal and cross sections are required
(D) None of these
Answer: Option C
Question No. 14 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: Option A
Question No. 15 In levelling operation
(A) If second reading is more than first, it represents a rise
(B) If first reading is more than second, it represents a rise
(C) If first reading is less than second, it represents a fall
(D) Both (b) and (c)
Answer: Option D
Question No. 16 Pick up the correct statement from the following:
(A) The directions of plumb lines suspended at different points in a survey are not strictly parallel
(B) In surveys of small extent, the effect of curvature may be ignored and the level surface of the earth is assumed as horizontal
(C) In surveys of large extent, the effect of curvature of the earth must be considered
(D) All the above
Answer: Option D
Question No. 17 Over-turning of vehicles on a curve can be avoided by using
(A) Compound curve
(B) Vertical curve
(C) Reverse curve
(D) Transition curve
Answer: Option D
Question No. 18 The conventional sign shown in below figure represents a
(A) Bridge carrying railway below road
(B) Bridge carrying road below railway
(C) Bridge carrying road and railway at the same level
(D) A level crossing
Answer: Option A
Question No. 19 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: Option B
Question No. 20 The curve composed of two arcs of different radii having their centres on the opposite side of the curve, is known
(A) A simple curve
(B) A compound curve
(C) A reverse curve
(D) A vertical curve
Answer: Option C
Question No. 21 The angle of intersection of a curve is the angle between
(A) Back tangent and forward tangent
(B) Prolongation of back tangent and forward tangent
(C) Forward tangent and long chord
(D) Back tangent and long chord
Answer: Option A
Question No. 22 If the focal length of the object glass is 25 cm and the distance from object glass to the trunnion axis is 15 cm, the additive constant
(A) 0.1
(B) 0.4
(C) 0.6
(D) 1.33
Answer: Option B
Question No. 23 In optical reading instruments
(A) The vertical circle is usually continuous from 0° to 359°
(B) The readings increase when the telescope is elevated in the face left position
(C) The readings decrease when the telescope is elevated in the face right position
(D) All the above
Answer: Option D
Question No. 24 Location of contour gradient for a high way is best set out from
(A) Ridge down the hill
(B) Saddle down the hill
(C) Bottom to the ridge
(D) Bottom to the saddle
Answer: Option B
Question No. 25 Setting out a curve by two theodolite method, involves
(A) Linear measurements only
(B) Angular measurements only
(C) Both linear and angular measurements
(D) None of these
Answer: Option B
Question No. 26 Direct method of contouring is
(A) A quick method
(B) Adopted for large surveys only
(C) Most accurate method
(D) Suitable for hilly terrains
Answer: Option C
Question No. 27 With the rise of temperature, the sensitivity of a bubble tube
(A) Decreases
(B) Increases
(C) Remains unaffected
(D) None of the above
Answer: Option A
Question No. 28 Flint glass
(A) Has slightly the greater refracting power than crown glass
(B) Has roughly double refracting power than that of crown
(C) And crown glass proportions yield the required focal length and neutralise the dispersion
produced by the convex lens at the emergence from the concave
(D) All the above
Answer: Option D
Question No. 29 The length of a traverse leg may be obtained by multiplying the latitude and
(A) Secant of its reduced bearing
(B) Sine of its reduced bearing
(C) Cosine of its reduced bearing
(D) Tangent of its reduced bearing
Answer: Option A
Question No. 30 Closed contours, with higher value inwards, represent a
(A) Depression
(B) Hillock
(C) Plain surface
(D) None of the above
Answer: Option B
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