LESSON 3
PRACTICE EXERCISE
The following items will test your grasp of the material covered in this lesson. There is only one correct
answer for each item. When you have completed the exercise, check your answer with the answer key
that follows. If you answer any item incorrectly, study again that part which contains the portion
involved.
1.
An actual error in baseline measurements is defined as _________________________________.
A. An amount which is mathematically computed to be the error of a single measurement
B. The actual error is the amount of deviation of each measurement from the mean of all
measurements.
C. The amount of error that is inherent in the measuring tape at any given degree
D. The amount of error which occurs when traversing over land of highly contrasting relief
2.
The 30-meter steel tape is standardized by the NBS ___________________________________.
A.
For each meter of tape on a flat, horizontal surface
B.
In the supported position at the 0-, 15-, and 30-meter points
C.
In the supported position at the 0-, 7.5-, 15.0- and 22.5-meter points
D.
For its overall length (at the 30-meter point) in accuracy
3.
What is the maximum distance a marking strip or point marking a 50-meter tape end on a
baseline can be out of line between the two adjacent marked tape end points?
A.
2.5 centimeters
B.
15 centimeters
C.
10 millimeters
D.
4 millimeters
4.
A survey party is measuring a second-order, Class I baseline and the wind begins to increase. At
what point should the taping be halted?
A.
When the tape bends more than 5 centimeters out of line
B.
When the tape bends more than 10 centimeters out of line
C.
When the tape bends more than 50 millimeters out of line
D.
When the tape bends more than 2 centimeters out of line
EN0593
3-36
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