1. Which of the following is an ellipsoid? a) Mercator b) Clark 1866 c) NAD 83 d
ID: 292884 • Letter: 1
Question
1. Which of the following is an ellipsoid?
a) Mercator
b) Clark 1866
c) NAD 83
d) UTM e) Both b) and c]
2. A geographic coordinate system includes:
a) planar coordinates
b) projection
c) datum
d) all of the above
3. With reference to the Tissot Indicatrix, if a = b, but axb* 1, then the projection can be said to be:
a) equal area
b) conformai
c) equidistant
d) true direction
4. If you change the map projection of a data set, and then save that data in the new projection, and repeat this over and over, you are going to introduce errors into the data set because of:
a) changes in distortion
b) rounding errors
c) scale incompatibilities
d) coordinates not entered correctly
5. The query "population=500" is composed, from left to right, of:
a) value, operator,field
b) field,operator,value
c) operator,field,value
d) value,field,operator
Explanation / Answer
1.
Answer: 'b' Clark 1866 is a reference ellipsoid having a semimajor axis of approximately 6,378,206.4 meters and a flattening of 1/294.9786982.
2.
Answer: 'd'
5.
Answer: 'a' here from left to right of the query given in the question, population represents the field, '=' represents operator and 500 is the value.
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