II ALUMROF

Question 1

Water Source Supply Levels
Level I — ?
Level II — ?
Level III — ?
Level IV — ?

Answer 1

✓ Point Source
✓ Communal Faucet
✓ Water District
✓ Doesn’t Exist

Question 2

Hypergeometric Probabilities:
Cropping Pattern — ?
Cropping Intensity — ?
Cropping Efficiency — ?
Cropping Schedule — ?

Answer 2

✓ Sequence
✓ Frequency
✓ Harvest
✓ Date & Time

Question 3

Soil Texture + Seepage & Percolation (mm/day)
Clay —
Silty Clay —
Clay Loam —
Silty Clay Loam —
Sandy Clay Loam —
Sandy Loam —

Answer 3

✓ 1.25 mm/day
✓ 1.5 mm/day
✓ 1.75 mm/day
✓ 1.75 mm/day
✓ 2 mm/day
✓ 4 mm/day

Question 4

Electric Motor

Answer 4

1.15 hp

Question 5

Electric Motor
Diesel— Air
Water
Gasoline — Air
Water

Answer 5

✓ 1.15 hp
✓ 1.20 hp
✓ 1.25 hp
✓ 1.30 hp
✓ 1.40 hp

Question 6

Layers of Atmosphere
1• Troposphere?
2• Stratosphere?
3• Mesosphere?
4• Thermosphere?

Answer 6

1.) 12 – 18 km (all weather occurs)
2.) 12 – 50 km (location ss ozone layer)
3.) 1 millibar (grabe gid ka thin)
4.) INIT NA LAYER

Question 7

INFILTRATION FORMULA ni Lewis Kostianov

Answer 7

f (t) = kt^n

Question 8

INFILTRATION FORMULA ni Horton

Answer 8

fc + (fo - fc)e ^-kt

Question 9

INFILTRATION FORMULA ni Philip

Answer 9

f (t) = s / √t + At

Question 10

TRAPEZOIDAL (Most Efficient) — theta 60°

tan(60) = ____
tan(60/2) = ____

A = ____________
P = ____________
t (water surface level) = __________
T(total depth level) = __________

A = _____
R =

Answer 10

tan(60) = 1.732
tan(60/2) = 0.577

A = bd + zd²
P = b + 2d √z² + 1
t = b + 2d/tan60
T = b + 2D/tan60

A = 1.732 d²
R = d/2

Question 11

RECTANGULAR (Best Hydraulic) — theta (90°)

A = ___
P =________

Design Open Channel (Concrete)
A = ___
b = ___
R = ___

Answer 11

A = bd
P =b + 2d

Design Open Channel (Concrete)
A = 2d²
b = 2d
R = d/2

Question 12

HATAG FORMULA!!!
DESIGN CRITERIA: Best Hydraulic Cross-Section (b-d)

a.) Lined/Concrete Canal — ???
b.) Unlined Canal — ???

Answer 12

a. ) Lined/Concrete Canal
b = 2d tan(60/2)

b.) Unlined Canal
b = 4d tan(60/2)

Question 13

TRIANGULAR ( Best theta (45°) with Hor for Tri)

A = ___

A = ___
P = _______

t = _____
T = _____

Answer 13

A = d²
A = zd²
P = 2d √z² + 1

t = 2dz
T = D/d (t)

Question 14

PARABOLIC

A = ______
P = _______

Answer 14

A = ⅔ t d
P = t + 8d² / 3t

Question 15

CRITICAL DEPTH
(for uniform flow in selected channel cross-section)

TRAPEZOIDAL

Answer 15

dc = 0.81 [ Q² / g ⁰.⁷⁵ b ¹.²⁵ ] ⁰.²⁷ — b / 30z

Question 16

CRITICAL DEPTH
(for uniform flow in selected channel cross-section)

RECTANGULAR

Answer 16

dc = [ Q² / gb² ] ^⅓

Question 17

CRITICAL DEPTH
(for uniform flow in selected channel cross-section)

TRIANGULAR

Answer 17

dc = [ 2Q² / gz ] ^⅕

Question 18

CRITICAL DEPTH
(for uniform flow in selected channel cross-section)

CIRCULAR

Answer 18

dc = 0.325 (Q / D ) ^⅔ + 0.083 D

Question 19

A