LESSON 3
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
Item
Correct Answer and Feedback
1.
B
The actual error is the amount of deviation of each measurement from the mean of
all measurements.
The actual error...(page 3-2, para 3-1c)
2.
A
For each meter of the tape on a flat, horizontal surface
The 30-meter steel tape...(page 3-2, para 3-2a)
3.
A
2.5 centimeters
No marking strip or point...(page 3-3, para 3-3)
4.
D
When the tape bends more than 2 centimeters out of line
No first-order and second-order...(page 3-4, para 3-5)
5.
D
Recorder
The party chief acts...(page 3-5, para 3-7)
6.
B
Full-tape length (50 meters)
When recording...(page 3-12, para 3-10 [note])
7.
B
However, measurements...(page 3-13, para 3-10c)
8.
A
0.2 second, direction theodolite
The wild T-3 precision theodolite...(page 3-15, para 3-13)
9.
C
The crosshair appears to move with respect to the observed object
If the crosshairs appears...(page 3-18, para 3-13c)
10.
D
The making of the coincidence
The making of the coincidence...(page 3-18, para 3-13f)
11.
A
4 minutes
Each graduation interval...(page 3-18, para 3-13f[1])
12.
C
Multiplied by 2
If both circles are used...(page 3-20, para 3-13f[3])
EN0593
3-40
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