IRRIGATION ENGINEERING QUIZ

If the irrigation efficiency is 80%, conveyance losses are 20% and the actual depth of watering is 16 cm, the depth of water required at the canal outlet, is

15 cm

10 cm

25 cm

20 cm

TRUE ANSWER : ?
YOUR ANSWER : ?

To determine the discharge at a section in a stream from its rating curve, the required data are<br/>i) slope of water surface at the section<br/>ii) stage at the section<br/>iii) current meter readings at the section<br/>The correct answer is

only (iii)

(i) and (ii)

(ii) and (iii)

only (ii)

TRUE ANSWER : ?
YOUR ANSWER : ?

Infiltration rate is always

equal to or more than the infiltration capacity

equal to or less than the infiltration capacity

less than the infiltration capacity

more than the infiltration capacity

TRUE ANSWER : ?
YOUR ANSWER : ?

If D₁ and D₂ are depths of water upstream and downstream of a hydraulic jump, the loss of head at the jump, is

(D₂ - D₁)3/3D₁D₂

(D₂ - D₁)3/2D₁D₂

(D₂ - D₁)3/D₁D₂

(D₂ - D₁)3/4D₁D₂

TRUE ANSWER : ?
YOUR ANSWER : ?

The uplift pressure on the face of a drainage gallery in a dam is taken as

hydrostatic pressure at toe

None of these

average of hydrostatic pressure at toe and heel

two-third of hydrostatic pressure at toe plus one-third of hydrostatic pressure at heel

TRUE ANSWER : ?
YOUR ANSWER : ?

A deficit of sediments in flowing water may cause a river

Sub-critical type

Aggrading type

Degrading type

Meandering type

TRUE ANSWER : ?
YOUR ANSWER : ?

In a chute spillway, the flow is usually

super critical

subcritical

critical

uniform

TRUE ANSWER : ?
YOUR ANSWER : ?

As compared to crest of the normal portion of the weir, the crest of the under sluice portion of weir is kept at

higher level

any of the above depending on the design

lower level

same level

TRUE ANSWER : ?
YOUR ANSWER : ?

In a syphon aqueduct

Drainage passes over the canal and F.S.L. of the canal is below the bottom of the drainage trough

Canal passes over the drainage and H.F.L. of the drainage is below the bottom of the canal trough

Canal passes over the drainage and H.F.L. of the drainage is above the bottom of the canal trough

Drainage passes over the canal and F.S.L. of the canal is above the bottom of the drainage trough

TRUE ANSWER : ?
YOUR ANSWER : ?

If d is the depth of the aquifer through which water is flowing, then the relationship between permeability k and transmissible T is given by

T = kd

T= Vkd

k= VTd

T = k/d

TRUE ANSWER : ?
YOUR ANSWER : ?