Civil Engineering - Irrigation

Exercise :: Irrigation - Section 3

6. 

If D1 and D2 are depths of water upstream and down stream of a hydraulic jump, the loss of head at the jump, is

A.
B.
C.
D.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

7. 

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

A.
B.
C.
D.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

8. 

The uplift pressure on the roof of an inverted syphon, is maximum when

A. drain in running dry
B. canal is running dry
C. canal is running with F.S.L.
D. drain is running with H.F.L.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

9. 

In rigid module, the discharge

A. is independent of water levels in the distributary and water course
B. depends upon the water level in distributary
C. depends upon the water level in the water course
D. depends upon the water levels of both, i.e. distributary and water course
E. none of these.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

10. 

The ratio of the rate of change of discharge of an outlet and parent channel, is known as

A. efficiency
B. sensitivity
C. flexibility
D. modular limit.

Answer: Option C

Explanation:

Flexibility: It provides a criteria for judging the behaviour of modules and semi-modules. It is generally denoted by letter 'F'. It is the ratio of the rate of change of outlet discharge to the rate of change of discharge of the parent channel.