Agricultural/Bioengineering Irrigation and Drainage Engineering 2

Question 1

The Penman-Monteith equation is used in irrigation planning to calculate:

Accepted Answer

Reference evapotranspiration (ETo)

Answer

The FAO Penman-Monteith equation is the standard method for estimating reference evapotranspiration (ETo) from meteorological data for irrigation scheduling.

Question 2

A center-pivot irrigation system rotates around a central point, covering a field shaped like a:

Accepted Answer

Circle

Answer

Center-pivot systems irrigate a circular area as the lateral arm rotates 360° around the pivot point, leaving corners of square fields unirrigated.

Question 3

Waterlogging in agricultural fields occurs when:

Accepted Answer

The water table rises to or near the root zone, limiting aeration

Answer

Waterlogging occurs when the water table rises into or near the crop root zone, displacing air and causing anaerobic conditions harmful to plants.

Question 4

The hydraulic gradient in a drainage system is best defined as:

Accepted Answer

The change in hydraulic head per unit distance in flow direction

Answer

Hydraulic gradient is the ratio of the difference in water pressure head to the flow distance, driving water movement toward drain pipes.

Question 5

Sprinkler irrigation is generally preferred over surface irrigation on:

Accepted Answer

Steep or irregular topography where surface methods would cause erosion

Answer

Sprinkler systems can apply water uniformly on irregular terrain where surface irrigation would cause runoff, erosion, or uneven distribution.

Agricultural/Bioengineering Practice Test

Agricultural/Bioengineering Practice Test

Agricultural/Bioengineering Irrigation and Drainage Engineering 2