Deck 5: Surveying and Mapping Techniques: Part A

Question 1

Closed contours, with higher value inwards, represent a

A)depression
B)hillock
C)plain surface
D)none of the above

Answer 1

hillock

Question 2

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

Answer 2

the vertical distance between two con-secutive contours

Question 3

Benchmark is established by

A)hypsometry
B)barometric levelling
C)spirit levelling
D)trigonometrical levelling

Answer 3

spirit levelling

Question 4

The type of surveying which requires least office work is

A)tacheomefry
B)trigonometrical levelling
C)plane table surveying
D)theodolite surveying

Question 5

Intersection method of detailed plotting is most suitable for

A)forests
B)urban areas
C)hilly areas
D)plains

Question 6

Detailed plotting is generally done by

A)radiation
B)traversing
C)resection
D)all of the above

Question 7

Three point problem can be solved by

A)Tracing paper method
B)Bessels method
C)Lehman's method
D)all of the above

Question 8

The size of a plane table is

A)75mm x 90 mm
B)60 mm x 75mm
C)45mm x 60 mm
D)30 mm x 45mm

Question 9

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

Question 10

The instrument used for accurate centering in plane table survey is

A)spirit level
B)alidade
C)plumbing fork
D)trough compass

Question 11

The two point problem and three point problem are methods of

A)resection
B)orientation
C)traversing
D)resection and orientation

Question 12

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

Question 13

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)

Question 14

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)

Question 15

90°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

Question 16

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

Question 17

If the reduced bearing of a line AB is N°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)+50°, -86.6 m
D)+70.7 m,-50°m

Question 18

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

Question 19

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

Question 20

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

Question 21

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

Question 22

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

Question 23

Hydrographic surveys deal with the mapping of

A)large water bodies
B)heavenly bodies
C)mountainous region
D)canal system

Question 24

Pick up the correct statement from the following :

A)the eyepiece plays no part in defining the line of sight
B)the diaphragm plays no part in defining the line of sight
C)the optical center of the objective plays no part in defining the line of sight
D)none of these.

Question 25

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

A)in the plane of cross hairs
B)at the centre of the telescope
C)at the optical centre of the eye-piece
D)anywhere inside the telescope