Deck 17: Surveying Terminology: Bearings, Levelling, and Measurements

Question 1

The point on which the instrument is set up, is called station point

Answer 1

False

Question 2

The bearing observed with a surveyor's compass is

A)whole circle bearing
B)quadrantal bearing

Answer 2

quadrantal bearing

Question 3

A French cross-staff has a magnetic compass at the top.

A)Right
B)Wrong

Answer 3

Wrong

Question 4

The method of levelling in which the heights of mountains are found by observing the temperature at which water boils is known as

A)barometric levelling
B)reciprocal levelling
C)longitudinal levelling
D)hypometry

Question 5

When the length of chain used in measuring distance is shorter than the standard length, the error in measured distance will be compensating error.

A)Right
B)Wrong

Question 6

A plain scale is used to read

A)one dimension
B)two dimensions
C)three dimensions
D)all of these

Question 7

The surveying used to determine additional details such as boundaries of fields, is called

A)city surveying
B)location surveying
C)cadastral surveying
D)topographical surveying

Question 8

The area of any irregular figure can be calculated accurately with the help of a planimeter.

Question 9

The shift of a curve is

A)equal to
B)one-half
C)one-third
D)one-fourth

Question 10

The method of measuring distance by pacing is chiefly used in

A)reconnaissance surveys
B)preliminary surveys
C)location surveys
D)all of these

Question 11

In locating the details of an object whose direct measurement is not possible due to some obstruction, the method used is

A)by angles and distances from the same station
B)by angle from one station and distance from the other station
C)by distance from two different stations
D)by angles from two different stations

Question 12

The collimation method for obtaining the reduced levels of points does not provide a check on

A)fore sights
B)back sights
C)change points
D)intermediate sights

Question 13

In a whole circle bearing system, S 25° 15' E corresponds to

A)115° 15'
B)154° 45'
C)205° 15'
D)334°45'

Question 14

The representative fraction of the scale is the ratio of the distance on the map or drawing to the corresponding distance on the ground

Question 15

The deflection angle for any chord is equal to the deflection angle for the proceeding chord minus the tangential angle for that chord.

Question 16

It is required to find the difference in elevation between two points A and B. During levelling, it is found that the staff reading at B is more than the staff reading at A. It indicates that the point A is

A)higher than
B)lower than

Question 17

The obstacle, which obstructs chaining but not vision, is a

A)river
B)hill
C)rising ground
D)all of these

Question 18

When 1 cm on a map represents 10 m on the ground, the representative fraction of the scale is

A)1/10
B)1/100
C)1/1000
D)1/10000

Question 19

The angle between the reflecting surfaces of a prism square is

A)30°
B)45°
C)60°
D)75°

Question 20

The vertical distance above or below the datum is called

A)reduced level of the point
B)elevation of the point
C)height of the instrument
D)either (a) or (b)

Question 21

For setting out an offset at an angle of 45°,

A)open
B)french
C)adjustable

Question 22

When the effect of curvature is taken into account in levelling, the true staff reading is obtained by

A)adding
B)subtracting

Question 23

In the surveying telescope, diaphragm is held

A)inside the eye piece
B)inside the objective
C)nearer to the eye piece
D)nearer to the objective

Question 24

A base line in a chain survey

A)checks the accuracy of the framework
B)enables the surveyor to locate the interior details which are far away from the main chain lines
C)fixes up the directions of all other lines
D)all of the above

Question 25

The method of surveying used for dtermining the relative height of points on the surface of the earth is called

A)levelling
B)simple levelling
C)longitudinal levelling
D)differential levelling