Worksheets22-01-26 Surveyor Plane Table Survey - Part 5
Total questions: 10
Worksheet time: 6mins
Name
Class
Date
1.
Resection in plane table surveying is used to:
a)
Plot unknown ground points from known stations
b)
Locate a new instrument station on the sheet using known points
c)
Measure horizontal angles accurately
d)
Establish a baseline for triangulation
2.
Which instrument is used to transfer the plotted station point from the sheet to the ground?
a)
Trough compass
b)
Plumbing fork (U-frame)
c)
Optical square
d)
Cross staff
3.
Arrange the following resection methods in increasing order of reliability: 1. Compass 2. Two-point 3. Back-sighting 4. Three-point
a)
1-2-3-4
b)
1-3-2-4
c)
2-1-3-4
d)
3-2-1-4
4.
Which resection method provides the highest positional accuracy?
a)
Orientation by compass
b)
Two-point method
c)
Back-sighting method
d)
Three-point method
5.
Resection after orientation by compass is generally not recommended because:
a)
It requires an auxiliary station
b)
It is time-consuming
c)
It is affected by local attraction
d)
It cannot extend surveys
6.
Assertion: Back-sighting resection is preferred over compass resection. Reason: Back-sighting does not depend on magnetic north.
a)
Both A and R are true and R is the correct explanation
b)
Both A and R are true but R is not the correct explanation
c)
A is true but R is false
d)
A is false but R is true
7.
Assertion: Two known points alone cannot directly orient a plane table. Reason: Orientation then requires an auxiliary station.
a)
Both A and R are true and R is the correct explanation
b)
Both A and R are true but R is not the correct explanation
c)
A is true but R is false
d)
A is false but R is true
8.
Which resection method involves maximum construction effort and table movement?
a)
Three-point method
b)
Back-sighting method
c)
Two-point method
d)
Compass method
9.
In resection after orientation by back-sighting, orientation at the new station is achieved by:
a)
Aligning north line with compass
b)
Sighting an auxiliary station
c)
Back-sighting the previous station along a known ray
d)
Using three known points
10.
Which statement regarding resection methods is most correct?
a)
Accuracy decreases with increase in known points
b)
Compass resection is preferred for precision surveys
c)
Three-point resection provides a unique and stable solution
d)
Two-point problem does not require auxiliary stations
100 %
