IRRIGATION ENGINEERING QUIZ

In gravity canals, F.S.L. is

Always at the ground level

Always below the ground level

Generally 4 to 5 metres above the ground level

Only a few cm above the ground level

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum average depth due to one day storm over an area of 100 km2 is 100 mm. Depth-Area-Duration (DAD) curves indicate that for the same area of 100 km2 the maximum average depth for a 3 hour storm will be

100 mm

less than 100 mm

more than 100 mm

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following can be used as a meter fall ?

All of these

vertical drop fall

flumed glacis fall

unflumed glacis fall

TRUE ANSWER : ?
YOUR ANSWER : ?

Seepage through embankments in an earthen dam is controlled by

drainage filters

relief wells

provision of downstream berms

drain trenches

TRUE ANSWER : ?
YOUR ANSWER : ?

Lacey's equation for calculating flood discharge in rivers, is

V = 10.8 R2/3 S1/3

V = 10.8 R1/3 S2/3

V = 10.8 R1/2 S1/2

V = 10.8 R2/3 S1/2

TRUE ANSWER : ?
YOUR ANSWER : ?

Hydrodynamic pressure due to earthquake acts at a height of

4H/3π above the base

3H/4π above the base

3H/4π below the water surface

4H/3π below the water surface, where H is the depth of water

TRUE ANSWER : ?
YOUR ANSWER : ?

The sensitivity of a rigid module is

zero

infinity

between zero and one

1

TRUE ANSWER : ?
YOUR ANSWER : ?

According to Lacey, depth of scour in a river depends upon the straightness of the reach. If D is the depth of scour in regime flow in a right angled bend, it is

1.25 D

1.50 D

2.00 D

1.75 D

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following types of falls use parabolic glacis for energy dissipation ?

Montague type fall

inglis fall

vertical drop fall

glacis fall

TRUE ANSWER : ?
YOUR ANSWER : ?

Vertical drop fall is satisfactory for a height upto

5.0 m

3.5 m

0.5 m

1.5 m

TRUE ANSWER : ?
YOUR ANSWER : ?

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