IRRIGATION ENGINEERING QUIZ

Presence of tail water in a gravity dam<br/>i) increases the principal stress<br/>ii) decreases the principal stress<br/>iii) increases the shear stress<br/>iv) decreases the shear stress<br/>The correct answer is

(ii) and (iii)

(i) and (iii)

(i)and(iv)

(ii) and (iv)

TRUE ANSWER : ?
YOUR ANSWER : ?

The width of a dowla is generally kept between 30 to 60 cm and its height above the road level should invariably be more than

20 cm

40 cm

10 cm

30 cm

TRUE ANSWER : ?
YOUR ANSWER : ?

Infiltration is the

movement of water through the soil

None of these

absorption of water by soil surface

both (A) and (B)

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following canal outlets maintains a constant discharge ?

non-modular outlet

flexible outlet

rigid module

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The net head under which the turbine reaches its peak efficiency at synchronous speed is called

design head

gross head

rated head

operating head

TRUE ANSWER : ?
YOUR ANSWER : ?

The measure to remove water logging of land, is

Neither (a) nor (b)

To increase outflow from the ground water reservoir

Both (a) and (b)

To reduce percolation from canals and water courses

TRUE ANSWER : ?
YOUR ANSWER : ?

In a Sarda type fall, the rectangular crest, may be used for discharge upto

6 cumecs

10 cumecs

14 cumecs

20 cumecs

TRUE ANSWER : ?
YOUR ANSWER : ?

A raingauge should preferably be fixed

under the tree

near the building

in an open space

in a closed space

TRUE ANSWER : ?
YOUR ANSWER : ?

Under the same conditions, which of the following shapes of water surface will give the highest rate of evaporation ?

independent of shape of water surface

concave water surface

convex water surface

flat water surface

TRUE ANSWER : ?
YOUR ANSWER : ?

Seepage through foundation in an earthen dam is controlled by providing

chimney drain

rock toe

impervious cut off

horizontal blanket

TRUE ANSWER : ?
YOUR ANSWER : ?

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