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WorksheetsCivil war Day 14 PWD-levelling,theodolite,Tacheometry& contourin
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
What is the name of theodolite with one of its telescope that cannot be revolved through 180° in a vertical plane about its horizontal axis?
a)
Auto level
b)
Dumpy level
c)
Transit theodolite
d)
Non-transit theodolite
2.
In trigonometric levelling, the measurement of elevation relies on which two key factors?
a)
Vertical angles and horizontal distance
b)
Horizontal angles and vertical distance
c)
Apparent vertical and horizontal distance
d)
Apparent vertical and horizontal angles
3.
Which of the following methods of contouring is most suitable for a hilly terrain?
a)
Direct method
b)
Square method
c)
Cross sections method
d)
Tacheometric method
4.
Which is used to measure the distance between the optical centre and the vertical axis of the instrument?
a)
Bevel protractor
b)
Vernier caliper
c)
Vernier micrometer
d)
Dial test indicator
5.
The process of spacing the contours proportionally, between the plotted ground points, is known as
a)
Profile levelling
b)
Orientation
c)
Cross-sectioning
d)
Interpolation
6.
How many stadia hairs are provided in the diaphragm of the tacheometer?
a)
Two stadia hairs
b)
Three stadia hairs
c)
Four stadia hairs
d)
Five stadia hairs
7.
What does the process of "lining in" involve in theodolite surveying?
a)
Establishing intermediate points on a straight line where both ends are intervisible
b)
Establishing intermediate points where both ends are not intervisible
c)
Establishing the center of the survey station
d)
Moving the instrument in a circular direction
8.
What are the main components of a levelling head?
a)
Upper plate, foot screws, and lower plate
b)
Base, shaft, and upper plate
c)
Foot screws, lower plate, and gauge
d)
Upper plate, screws, and level
9.
Contour interval is inversely proportional to
a)
Scale of map
b)
Purpose and extent of survey
c)
Nature of ground
d)
Both a and b
10.
A level is set up at O on a line AB 60 m from A and 700 m from B. The back sight on A is 2.654 m and the fore sight on B is 2.786 m. Find the true difference of level between A and B.
a)
0.072
b)
0.063
c)
0.099
d)
0.0212
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