If Dc is the critical depth, D is the depth of water down stream and HL is the t

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If D_c is the critical depth, D is the depth of water down stream and H_L is the total head loss at the cistern of a vertical fall, the depth x of the cistern below the bed level down stream suggested by Blench, is
Options
A.
B.
C.
D.

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1. Lane's weighted creep theory assumes
Options
A. equal weightage to horizontal and vertical creeps
B. double weightage to horizontal creep and one weightage to vertical creep
C. triple weightage to horizontal creep and one weightage to vertical creep
D. triple weightage to vertical creep and one weightage to horizontal creep
E. double weightage to vertical creep and one weightage to horizontal creep.

2. Pick up the correct sequence of the part of a canal system from the following
Options
A. Head work-distributary-branch canal-minor
B. Head works-main canal-branch canal-dis-tributary-minor
C. Head works-main canal-branch canal-minor-distributary
D. Heads works-branch canal-main canal distributary, minor.

3. According to Kennedy, the critical velocity (V₀) in metres in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel).
Options
A.
B.
C.
D.

4. Pick up the correct statement from the following
Options
A. Escapes are essential safety valves in a canal system
B. The capacity of escapes should not be less than the capacity of the canal at its location
C. The escapes must lead the surplus water to natural drainages
D. The escapes are aligned to take advantage of contours of lower values
E. All the above.

5. A current meter measures the velocity of flow, if it is held
Options
A. on the surface of water
B. at the bottom of channel
C. at any point within the cross-section
D. none of these.

6. According to Lacey, in regime conditions
Options
A. silt is kept in suspension by vertical components of eddies
B. entire cross-section of the channel is generated at all points by the forces normal to the wetted perimeter
C. both (a) and (b)
D. neither (a) nor (b).

7. A river is said to be of
Options
A. aggrading type if it builds up its bed to a certain slope
B. degrading type if it cuts its bed to a certain slope
C. meandering type if it flows in sinuous curve
D. all the above.

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