Irrigation

1) constructing cutoff under upstream face
2) constructing drainage channels bet-ween the dam and its foundation
3) by pressure grouting in foundation
The corret answer is?
A. only (1)
B. both (1) and (2)
C. both (1) and (3)
D. (1), (2) and (3)

A. hydrodynamic pressure
B. inertia force into the body of the dam
C. both (A) and (B)
D. none of the above

A. water pressure
B. wave pressure
C. self-weight of dam
D. uplift pressure

A. B/2
B. B/3
C. B/4
D. B/6

A. are costlier
B. are less susceptible to failure
C. require sound rock foundations
D. require less skilled labour

A. drainage filters
B. relief wells
C. drain trenches
D. provision of downstream berms

A. flood control
B. to provide sufficient depth of water in navigable channels, during low water periods
C. to preserve the channel in good shape by efficient disposal of suspended and bed load
D. all of the above

A. at right angle and parallel to weir crest
B. parallel and at right angle to weir crest
C. parallel to weir crest in both
D. at right angle to weir crest in both

A. depends on depth of approach and upstream slope
B. depends on downstream apron interference and downstream submergence
C. remains constant
D. both (A) and (B)

A. straight drop spillway
B. shaft spillway
C. chute spillway
D. ogee spillway