FUNDAMENTAL SURVEYING Measurement and Data Collection 1

Question 1

Which type of leveling is most accurate for establishing precise vertical control?

Accepted Answer

Differential leveling

Answer

Trigonometric leveling

Answer

Barometric leveling

Answer

Reciprocal leveling

Question 2

A backsight reading of 8.25 ft is taken on a BM with elevation 100.00 ft. What is the Height of Instrument (HI)?

Accepted Answer

108.25 ft

Answer

91.75 ft

Answer

100.00 ft

Answer

116.50 ft

Question 3

What is the allowable misclosure for a first-order leveling loop of 100 km?

Accepted Answer

± 4 mm √K

Answer

± 8 mm √K

Answer

± 12 mm √K

Answer

± 24 mm √K

Question 4

In EDM measurements, which atmospheric variable has the greatest effect on the speed of light?

Accepted Answer

Temperature

Answer

Humidity

Answer

Pressure

Answer

Wind speed

Question 5

What is the purpose of a two-peg test in leveling?

Accepted Answer

To determine and correct collimation error

Answer

To test the level tube sensitivity

Answer

To calibrate the rod graduation

Answer

To check for instrument settlement

Question 6

What is the formula for the elevation of a point using a foresight reading?

Accepted Answer

Elevation = HI − FS

Answer

Elevation = HI + FS

Answer

Elevation = BM + FS

Answer

Elevation = BM − FS