LESSON 2
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
Item
Correct Answer and Feedback
1.
B
The curved surface of a spheroid
In geodetic surveys, all established...(page 2-4, para 2-3)
2.
D
Network
Each survey has a fundamental...(page 2-7, para 2-9)
3.
A
Length of the starting line
To begin work on a net of...(page 2-18, para 2-33b)
4.
B
100,000
Class I is the most precise...(page 2-18, para 2-34a)
5.
A
At night, using signal lights as targets
Since first-order triangulation is...(page 2-19, para 2-34a[2])
6.
C
Each of two nights, with a minimum of 2-hour separation between the two sets.
The rejection limit should...(page 2-19, para 2-34a[3])
7.
B
The refraction of light due to the earth's atmosphere
The difference between the...(page 2-30, para 2-53a)
8.
C
One-eighth, opposite
The effect of refraction...(page 2-30, para 2-53[b])
9.
C
That is normally obstructed but becomes visible at night
A refraction line is...(page 2-35, para 2-53[j])
10.
A
Amount of heat transferred to the atmosphere by the ground
The determining factor...(page 2-36, para 2-55)
11.
A
8
The most commonly used...(page 2-38, para 2-58)
12.
C
100 feet
Focus the lamp at night...(page 2-42, para 2-58[1])
EN0593
2-52
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