A channel is said lo be of most economical cross section, for a given cross-sectional area and bed slope when it __________________?

A. Gives max. discharge
B. Has minimum wetted perimeter
C. Involves lesser excavation
D. All of these

in most economical Trapezoidal section, half of the Top width is equal to _________________?

A. Bottom width of channel
B. Depth of channel
C. Sloping side of channel
D. None of these

if the depth of water in an open channel is greater than the critical depth, the flow is called________________?

A. Critical depth
B. Non-critical flow
C. Sub-critical flow
D. Shooting flow

Art of growing crops, management of live stocks, husbandry and farming is called________________?

A. Agriculture
B. Crop farming
C. Water management
D. All are correct

Art of making saline un-cultivable lands capable of re-cultivation is called.___________________?

A. Reclamation
B. Fertilization
C. Growing crops
D. Water application

Which of the following is a cash crop ___________________?

A. Maize
B. Paddy
C. Cotton
D. Wheat

Out/ of a well water is more than canal water because____________________?

A. Conveyance losses in well irrigation are less
B. Well water is clear than canal water
C. Lifting of water increase cost of well water
D. Well water is used economically

A watershed canal __________________?

A. Irrigates only on one side
B. Avoids the cross drainage works
C. Is generally aligned parallel to the contour of the area
D. Is most suitable in hilly areas

The process of consolidation of stabilized earth work in canal or river embankments. In this process the soil is deposited in layers of specified thickness and at a particular moisture content is called __________________?

A. Soil stabilization
B. Densification
C. Compaction
D. All are correct

When the reservoir is full, the maximum compressive force in a gravity dam is produced ___________________?

A. At the toe
B. At the heel
C. Within the middle third of base
D. At centre of base