76. Which of the following methods of con-touring is most suitable for a hilly terrain ?
a) direct method
b) square method
c) cross-sections method
d) tacheometric method
Ans: d
77. Select the correct statement.
a) Contour interval on any map is kept constant.
b) Direct method of contouring is cheap¬er than indirect method.
c) Inter-visibility of points on a contour map cannot be ascertained.
d) Slope of a hill cannot be determined with the help of contours.
Ans: a
78. Closed contours, with higher value inwards, represent a
a) depression
b) hillock
c) plain surface
d) none of the above
Ans: b
79. Contour interval is
a) the vertical distance between two con-secutive contours
b) the horizontal distance between two consecutive contours
c) the vertical distance between two points on same contour
d) the horizontal distance between two points on same contour
Ans: a
80. Benchmark is established by
a) hypsometry
b) barometric levelling
c) spirit levelling
d) trigonometrical levelling
Ans: c
81. The type of surveying which requires least office work is
a) tacheomefry
b) trigonometrical levelling
c) plane table surveying
d) theodolite surveying
Ans: c
82. Intersection method of detailed plotting is most suitable for
a) forests
b) urban areas
c) hilly areas
d) plains
Ans: c
83. Detailed plotting is generally done by
a) radiation
b) traversing
c) resection
d) all of the above
Ans: a
84. Three point problem can be solved by
a) Tracing paper method
b) Bessels method
c) Lehman’s method
d) all of the above
Ans: d
85. The size of a plane table is
a) 750 mm x 900 mm
b) 600 mm x 750 mm
c) 450 mm x 600 mm
d) 300 mm x 450 mm
Ans: b
86. The process of determining the locations of the instrument station by drawing re sectors from the locations of the known stations is called
a) radiation
b) intersection
c) resection
d) traversing
Ans: c
87. The instrument used for accurate centering in plane table survey is
a) spirit level
b) alidade
c) plumbing fork
d) trough compass
Ans: c
88. Which of the following methods of plane table surveying is used to locate the position of an inaccessible point ?
a) radiation
b) intersection
c) traversing
d) resection
Ans: b
89. The two point problem and three point problem are methods of
a) resection
b) orientation
c) traversing
d) resection and orientation
Ans: d
90. The resection by two point problem as compared to three point problem
a) gives more accurate problem
b) takes less time
c) requires more labour
d) none of the above
Ans: c
91. The methods used for locating the plane table stations are
i) radiation
ii) traversing
iii) intersection
iv) resection
The correct answer is
a) (i) and (ii)
b) (iii) and (iv)
c) (ii) and (iv)
d) (i) and (iii)
Ans: c
92. After fixing the plane table to the tripod, the main operations which are needed at each plane table station are
i) levelling
ii) orientation
iii) centering
The correct sequence of these operations is
a) (i), (ii),.(iii)
b) (i), (iii), (ii)
c) (iii), (i), (ii)
d) (ii), (Hi), (i)
Ans: b
93. Bowditch rule is applied to
a) an open traverse for graphical adjustment
b) a closed traverse for adjustment of closing error
c) determine the effect of local attraction
d) none of the above
Ans: b
94. If in a closed traverse, the sum of the north latitudes is more than the sum of the south latitudes and also the sum of west departures is more than the sum of the east departures, the bearing of the closing line is in the
a) NE quadrant
b) SE quadrant
c) NW quadrant
d) SW quadrant
Ans: b
95. If the reduced bearing of a line AB is N60°W and length is 100 m, then the latitude and departure respectively of the line AB will be
a) +50 m, +86.6 m
b) +86.6 m, -50 m
c) +50m, -86.6 m
d) +70.7 m,-50 m
Ans: b
96. The angle between the prolongation of the preceding line and the forward line of a traverse is called
a) deflection angle
b) included angle
c) direct angle
d) none of the above
Ans: a
97. Transit rule of adjusting the consecutive coordinates of a traverse is used where
a) linear and angular measurements of the traverse are of equal accuracy
b) angular measurements are more accurate than linear measurements
c) linear measurements are more accurate than angular measurements
d) all of the above
Ans: b
98. Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations ?
a) measuring angle and distance from one transit station
b) measuring angles to the point from at least two stations
c) measuring angle at one station and distance from other
d) measuring distance from two points on traverse line
Ans: b
99. Subtense bar is an instrument used for
a) levelling
b) measurement of horizontal distances in plane areas
c) measurement of horizontal distances in undulated areas
d) measurement of angles
Ans: c
100. Horizontal distances obtained by thermometric observations
a) require slope correction
b) require tension correction
c) require slope and tension corrections
d) do not require slope and tension corrections
Ans: d
101. The number of horizontal cross wires in a stadia diaphragm is
a) one
b) two
c) three
d) four
Ans: c
102. 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
a) 7.5 m
b) 25 m
c) 50
d) 75 m
Ans: d
103. For a tacheometer the additive and multi-plying constants are respectively
a) 0 and 100
b) 100 and 0
c) 0 and 0
d) 100 and 100
Ans: a
104. 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 is
a) 0.1
b) 0.4
c) 0.6
d) 1.33
Ans: b
105. Overturning of vehicles on a curve can be avoided by using
a) compound curve
b) vertical curve
c) reverse curve
d) transition curve
Ans: d
106. Different grades are joined together by a
a) compound curve
b) transition curve
c) reverse curve
d) vertical curve
Ans: d