surveying Mcqs
51. Local attraction in compass surveying may exist due to________________?
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A. presence of magnetic substances near the instrument

B. loss of magnetism of the needle

C. incorrect levelling of the magnetic needle

D. friction of the needle at the pivot

52. The instrument used for accurate centering in plane table survey is________________?
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A. spirit level

B. trough compass

C. plumbing fork

D. alidade

53. The maximum tolerance in a 20 m chain is_______________?
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A. 3 mm

B. 8 mm

C. 5 mm

D. 2 mm

54. Three point problem can be solved by_________________?
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A. Bessels method

B. all of the above

C. Lehmans method

D. Tracing paper method

55. Which of the following errors can be neutralised by setting the level midway between the two stations ?
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A. error due to curvature only

B. error due to refraction only

C. error due to both curvature and re-fraction

D. none of the above

56. Agate cap is fitted with a_________________?
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A. level

B. prismatic compass

C. chain

D. cross staff

57. If the horizontal distance between the staff point and the point of observation is d, then the error due to curvature of earth is proportional to_______________?
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A. d

B. 1/d

C. 1/d2

D. d2
58. If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is_________________?
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A. 100.655m

B. 99.345 m

C. 100.345 m

D. 101.870m

59. Alevel lineis a______________?
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A. horizontal line

B. line passing through the center of cross hairs and the center of eye piece

C. line passing through the objective lens and the eye-piece of a dumpy or tilting level

D. line parallel to the mean spheriodal surface of earth
60. The angle of intersection of the two plane mirrors of an optical square is______________?
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A. 45

B. 90

C. 60

D. 30

61. The following sights are taken on a turning point________________?
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A. foresight and intermediate sight

B. backsight only

C. foresight and backsight

D. foresight only

62. Which of the following is not used in measuring perpendicular offsets ?
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A. optical square

B. line ranger

C. steel tape

D. cross staff

63. Detailed plotting is generally done by________________?
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A. resection

B. traversing

C. radiation

D. all of the above

64. The type of surveying which requires least office work is________________?
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A. plane table surveying

B. theodolite surveying

C. trigonometrical levelling

D. tacheomefry

65. In the double application of principle of reversion, the apparent error is_______________?
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A. equal to true error

B. half the true error

C. four times the true error

D. two times the true error

66. The horizontal angle between the true meridian and magnetic meridian at a place is called______________?
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A. declination

B. magnetic bearing

C. local attraction

D. azimuth

67. The number of horizontal cross wires in a stadia diaphragm is ________________?
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A. one

B. three

C. four

D. two

68. For which of the following permanent adjustments of theodolite, the spire test is used ?
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A. adjustment of horizontal axis

B. adjustment of plate levels

C. adjustment of altitude bubble and vertical index frame

D. adjustment of line of sight

69. If the intercept on a vertical staff is ob-served as 0.75 m from a tacheometer, the horizontal distance between tacheometer and staff station is________________?
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A. 7.5 m

B. 50

C. 75 m

D. 25 m

70. Overturning of vehicles on a curve can be avoided by using ________________?
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A. reverse curve

B. compound curve

C. vertical curve

D. transition curve
71. Closed contours, with higher value inwards, represent a_______________?
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A. none of the above

B. depression

C. plain surface

D. hillock
72. The rise and fall method of levelling provides a complete check on_______________?
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A. intermediate sight

B. foresight

C. backsight

D. all of the above
73. Cross staff is an instrument used for________________?
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A. none of the above

B. measuring approximate horizontal angles

C. measuring bearings of the lines

D. setting out right angles
74. A series of closely spaced contour lines represents a___________________?
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A. steep slope

B. gentle slope

C. plane surface

D. uniform slope

75. A metallic tape is made of ______________ ?
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A. steel

B. linen

C. invar

D. cloth and wires
76. The rise and fall method_______________?
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A. is not suitable for levelling with tilting levels

B. quicker and less tedious for large number of intermediate sights

C. is less.accurate than height of instrument method

D. provides a check on the reduction of intermediate point levels
77. Intersection method of detailed plotting is most suitable for________________?
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A. hilly areas

B. plains

C. urban areas

D. forests

78. For a tacheometer the additive and multi-plying constants are respectively________________?
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A. 0 and 100

B. 100 and 0

C. 0 and 0

D. 100 and 100

79. Which of the following errors can be eliminated by taking mean of bot face observations ?
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A. error due to imperfect graduations

B. error due to line of collimation not being perpendicular to horizontal axis

C. error due to imperfect adjustment of plate levels

D. error due to eccentricity of verniers

80. The size of a plane table is________________?
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A. 300 mm x 450 mm

B. 600 mm x 750 mm

C. 450 mm x 600 mm

D. 750 mm x 900 mm

81. In an internal focussing type of telescope, the lens provided is_______________?
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A. convex

B. concave

C. plano-convex

D. plano-concave

82. If the reduced bearing of a line AB is N60W and length is 100 m, then the latitude and departure respectively of the line AB will be________________?
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A. +50 m, +86.6 m

B. +86.6 m, -50 m

C. +70.7 m,-50 m

D. +50m, -86.6 m

83. If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to_________________?
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A. altitude bubble on index frame if it is to be used as a level

B. altitude bubble on telescope if it is to be used as a level

C. altitude bubble on index frame

D. correct answer is?

E. altitude bubble on telescope

84. Normal tension is that pull which_______________?
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A. neutralizes the effect due to pull and sag

B. makes the correction due to sag equal to zero

C. makes the correction due to pull equal to zero

D. is used at the time of standardising the tape

85. The cross hairs in the surveying telescope are placed_____________?
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A. much closer to the objective lens than to the eye piece

B. much closer to the eye-piece than to the objective lens

C. midway between eye piece and objective lens

D. anywhere between eye-piece and objective lens

86. If the lower clamp screw is tightened and upper clamp screw is loosened, the theodolite may be rotated____________?
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A. on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate

B. on its outer spindle with a relative motion between the vernier and graduated scale of lower plate

C. on its outer spindle without a relative motion between the vernier and gra-duated scale of lower plate

D. on its inner spindle without a relative motion between the vernier and the graduated scale of lower plate

87. Benchmark is established by________________?
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A. trigonometrical levelling

B. barometric levelling

C. hypsometry

D. spirit levelling
88. Select the correct statement_______________?
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A. A contour is not necessarily a closed curve

B. Two contours of different elevations do not cross each other except in case of an overhanging cliff

C. A contour represents a ridge line if the concave side of lower value contour lies towards the higher value contour

D. All of the above statements are correct

89. Select the correct statement?
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A. Slope of a hill cannot be determined with the help of contours

B. Contour interval on any map is kept constant

C. Inter-visibility of points on a contour map cannot be ascertained

D. Direct method of contouring is cheaper than indirect method

90. Contour interval is_______________?
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A. larger if the time available is more

B. larger for accurate works

C. inversely proportional to the scale of the map

D. directly proportional to the flatness of ground

91. For a well-conditioned triangle, no angle should be less than______________?
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A. 20

B. 60

C. 30

D. 45

92. Horizontal distances obtained by thermometric observations_________________?
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A. require slope and tension corrections

B. require slope correction

C. require tension correction

D. do not require slope and tension corrections
93. Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations ?
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A. measuring angle and distance from one transit station

B. measuring angles to the point from at least two stations

C. measuring distance from two points on traverse line

D. measuring angle at one station and distance from other

94. The sensitivity of a bubble tube can be increased by________________?
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A. increasing the diameter of the tube

B. increasing the viscosity of liquid

C. decreasing the length of bubble

D. decreasing the radius of curvature of tube

95. The resection by two point problem as compared to three point problem_______________?
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A. requires more labour

B. takes less time

C. gives more accurate problem

D. none of the above

96. Which of the following is not the function of levelling head ?
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A. to support the main part of the instrument

B. none of the above

C. to provide a means for leveling the theodolite

D. to attach the theodolite to the tripod

97. The allowable length of an offset depends upon the______________?
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A. degree of accuracy required

B. scale of plotting

C. all of the above

D. method of setting out the perpendiculars and nature of ground

98. In the cross-section method of indirect contouring, the spacing of cross-sections depends upon_____________?
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A. characteristics of ground

B. correct answer is ?

C. scale of plan

D. contour interval

99. Different grades are joined together by a ________________?
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A. compound curve

B. reverse curve

C. vertical curve

D. transition curve

100. A telescope is said to be inverted if its______________?
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A. vertical circle is to its left and the bubble of the telescope is up

B. vertical circle is to its right and the bubble of the telescope is down

C. vertical circle is to its right and the bubble of the telescope is up

D. vertical circle is to its left and the bubble of the telescope is down