BRAE 340 EXAM 1 questions well answered
already passed
1. Identify the proper units for the following
Application Rate in/hr
terms. There is only one answer for each
Length miles
term.
Flow Rate cu-ft/sec
Power kilowatt
Area acres
Depth inches
Pressure head
Velocity ft/sec
Volume ac-in
2. Statements (1) and (2) refer to water requirements. (1) is Net; (2)
is Net
Are these Net of Gross requirements?
(1)Almonds require 44 inches of water
per acre each season.
(2)Pistachios require 2 inches of water
during the peak week.
3. Statements (1) and (2) refer to water (1) is Net; (2) is Net
amounts. Are these Net or Gross amounts?
(1)Crop water requirement (inches) = ET
(in/day) x Days between irrigations.
(2) Crop water requirements (ac-ft) =
Depth at each irrigation (inches/12) x Crop
Area (acres).
4. Statements (1) and (2) refer to water requirements. (1) is Gross; (2)
is Net
Are these Net of Gross requirements?
(1) Each furrow requires 12 gallons per
minute from the supply ditch.
,BRAE 340 EXAM 1 questions well answered
already passed
(2) The peak use for cotton in this area is
0.3 inches per day.
5. (1) is Gross; (2) is Gross
,BRAE 340 EXAM 1 questions well answered
already passed
Statements (1) and (2) refer to water
requirements. Are these Net of Gross
requirements?
(1) The drip system must deliver 48 gallons
per tree per day.
(2)The sprinklers must apply 36 inches over
the course of the irrigation season.
82.1 %
6. An irrigation system applies a gross
amount of 48 inches of water during the
growing season. An
evaluation determines that: 31 inches goes to
satis- fy crop ET; 9 inches runs off and is not
collected for reuse; 4.1 inches passes
through the root zone as deep percolation
(total deep percolation), of which 1 inch is
beneficial leaching for salt removal; and 1
inch is ET from weeds. What would the
efficiency be if the gross application was 83.3%
reduced because the runoff was eliminated?
7. An irrigation system applies a gross
amount of 46 inches of water during the
growing season. An
determines that: 29 inches goes to satis-
evaluation Beneficial uses =>
crop ET +
crop ET; 10 inches runs off and is not collected for
fy
reuse; 5.3 inches passes through the root leaching
Eliminating ruott does not
zone as
percolation (total deep percolation), of which
deep
beneficial use. change
1 inch is beneficial leaching for salt removal; and 1
, BRAE 340 EXAM 1 questions well answered
already passed
New gross applied is equal to
is ET from weeds. What would the efficiency be
inch
applied - runott original gross
if the gross application was reduced
because the runoff was eliminated? IE = (beneficial use/new
gross applied) * 100
8. Usually, the most significant beneficial use of water Crop
evapotranspiration (ETc)
is which of the following?
already passed
1. Identify the proper units for the following
Application Rate in/hr
terms. There is only one answer for each
Length miles
term.
Flow Rate cu-ft/sec
Power kilowatt
Area acres
Depth inches
Pressure head
Velocity ft/sec
Volume ac-in
2. Statements (1) and (2) refer to water requirements. (1) is Net; (2)
is Net
Are these Net of Gross requirements?
(1)Almonds require 44 inches of water
per acre each season.
(2)Pistachios require 2 inches of water
during the peak week.
3. Statements (1) and (2) refer to water (1) is Net; (2) is Net
amounts. Are these Net or Gross amounts?
(1)Crop water requirement (inches) = ET
(in/day) x Days between irrigations.
(2) Crop water requirements (ac-ft) =
Depth at each irrigation (inches/12) x Crop
Area (acres).
4. Statements (1) and (2) refer to water requirements. (1) is Gross; (2)
is Net
Are these Net of Gross requirements?
(1) Each furrow requires 12 gallons per
minute from the supply ditch.
,BRAE 340 EXAM 1 questions well answered
already passed
(2) The peak use for cotton in this area is
0.3 inches per day.
5. (1) is Gross; (2) is Gross
,BRAE 340 EXAM 1 questions well answered
already passed
Statements (1) and (2) refer to water
requirements. Are these Net of Gross
requirements?
(1) The drip system must deliver 48 gallons
per tree per day.
(2)The sprinklers must apply 36 inches over
the course of the irrigation season.
82.1 %
6. An irrigation system applies a gross
amount of 48 inches of water during the
growing season. An
evaluation determines that: 31 inches goes to
satis- fy crop ET; 9 inches runs off and is not
collected for reuse; 4.1 inches passes
through the root zone as deep percolation
(total deep percolation), of which 1 inch is
beneficial leaching for salt removal; and 1
inch is ET from weeds. What would the
efficiency be if the gross application was 83.3%
reduced because the runoff was eliminated?
7. An irrigation system applies a gross
amount of 46 inches of water during the
growing season. An
determines that: 29 inches goes to satis-
evaluation Beneficial uses =>
crop ET +
crop ET; 10 inches runs off and is not collected for
fy
reuse; 5.3 inches passes through the root leaching
Eliminating ruott does not
zone as
percolation (total deep percolation), of which
deep
beneficial use. change
1 inch is beneficial leaching for salt removal; and 1
, BRAE 340 EXAM 1 questions well answered
already passed
New gross applied is equal to
is ET from weeds. What would the efficiency be
inch
applied - runott original gross
if the gross application was reduced
because the runoff was eliminated? IE = (beneficial use/new
gross applied) * 100
8. Usually, the most significant beneficial use of water Crop
evapotranspiration (ETc)
is which of the following?
